Detection device

Abstract

The application provides a detection device for detecting the connection state of a quick connector and a male connector. The detection device comprises an actuating element, a movable element and a detection circuit. The movable element has an insertion arm extending in a horizontal direction and adapted to be inserted into a gap between the quick connector and the male connector. The detection circuit comprises an indicating unit. The movable element is in an initial position when the actuating element is in a non-working position, and has a tendency to move away from the initial position in a vertical direction when the actuating element moves to a working position. The detection circuit is configured to be in different states in response to the position changes of the actuating element and the movable element, so that the indicating unit provides different indication signals in the case of correct connection and incorrect connection of the connector and the male connector when the actuating element moves from the non-working position to the working position. The detection device according to the application has good versatility.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of male connector connection state detection devices, in particular to a detection device for detecting the connection state of a quick connector and a male connector. BACKGROUND

[0002] Quick connectors are commonly used for connecting between pipes. For example, quick connectors can be applied to liquid and / or vapor pipes in vehicles, and the reliability of the connection between the quick connectors and the pipes is of great significance to the fluid system and the safety of the vehicle.

[0003] The existing quick connector generally comprises a connector body and a lock. When connecting the male connector at the end of the pipe to the quick connector, the connector body and the male connector need to be axially inserted into position first so that the lock locks the male connector. However, during the connection operation, there is a possibility that the quick connector and the male connector are not correctly connected, which causes the lock to fail to correctly lock the male connector, and the male connector is prone to loosening under external force. Moreover, it is difficult for the installer to observe from the appearance whether the quick connector and the male connector are correctly connected, which will cause great safety hazards.

[0004] Chinese invention patent CN109099826A discloses a quick plug connector installation state gauge. The gauge judges whether the installation state of the quick plug connector is correct by judging whether there is a difference between the overall profile of the quick plug connector after installation and the profile line of the quick plug connector in the correct installation state. The gauge needs to be designed strictly in accordance with the profile of the quick plug connector in the correct installation state. However, the structures of the quick connectors on the market are different, and the gauge cannot simultaneously meet the detection needs of different quick connectors, has poor universality, and has high manufacturing and using costs. SUMMARY

[0005] The present application aims to solve the problems existing in the prior art and provides a detection device for detecting the connection state of a quick connector and a male connector, which has good universality.

[0006] The application provides a detection device. The detection device is suitable for detecting the connection state of a quick connector and a male connector, the male connector having a shoulder extending in the radial direction thereof, and there being a gap between the end face of the quick connector and the shoulder of the male connector when the quick connector is connected with the male connector. The detection device comprises: a housing; an actuating element connected to the housing and adapted to move between a non-working position and a working position; a movable element movably arranged in the housing and having an insertion arm extending from the housing, the insertion arm extending in a first direction and being adapted to be inserted into the gap; a first elastic element connecting the movable element with the actuating element, such that when the actuating element is in the non-working position, the movable element is in an initial position, and when the actuating element moves from the non-working position to the working position, the movable element has a tendency to move away from the initial position in a second direction under the action of the elastic force of the first elastic element, wherein the first direction is not parallel to the second direction; and a detection circuit mounted to the housing and comprising an indicating unit, the detection circuit being configured to be in different states in response to the position change of the movable element, such that when the actuating element moves from the non-working position to the working position, the indicating unit provides different indication signals in the case of correct connection and incorrect connection of the quick connector and the male connector, respectively.

[0007] According to the above technical concept, the application can further comprise any one or more of the following optional forms.

[0008] In some optional forms, the insertion arm of the movable element is adapted to exert a force on the end face of the quick connector or the shoulder of the male connector in response to the elastic force of the first elastic element when the insertion arm is inserted into the gap and the actuating element moves to the working position, the elastic coefficient of the first elastic element being set such that the force is greater than or equal to the force for separating the quick connector and the male connector in incorrect connection and less than the force for separating the quick connector and the male connector in correct connection.

[0009] In some optional forms, the first direction is perpendicular to the second direction.

[0010] In some optional forms, the detection circuit further comprises a first switch and a second switch, the first switch, the second switch and the indicating unit being connected in series with each other, wherein the actuating element is arranged to switch the first switch from an open state to a closed state when moving from the non-working position to the working position; and the movable element is arranged to switch the second switch from a closed state to an open state when moving away from the initial position in the second direction.

[0011] In some alternatives, the housing comprises a first housing part, and the actuating element is pivotably connected to the first housing part.

[0012] In some alternatives, the actuating element comprises a first section and a second section located on both sides of a pivot point of the actuating element, the first section is connected to the movable element by the first elastic element, and the second section is provided with a second elastic element for resetting the actuating element relative to the first housing part.

[0013] In some alternatives, the first switch is provided in the first housing part and has a switch contact, and the actuating element is arranged such that, when the actuating element is pivoted to the working position, the second section of the actuating element abuts the switch contact of the first switch, so that the first switch is in a closed state; and when the actuating element is pivoted to the non-working position, the second section of the actuating element is away from the switch contact of the first switch, so that the first switch is in an open state.

[0014] In some alternatives, the housing comprises a second housing part connected to the first housing part, and the movable element is arranged in the second housing part and is adapted to move in the second direction within the second housing part.

[0015] In some alternatives, the second switch is provided in the second housing part and has a switch contact, and the movable element is arranged such that, when the movable element is in the initial position, the movable element abuts the switch contact of the second switch, so that the second switch is in a closed state; and when the movable element moves away from the initial position in the second direction, the movable element is disengaged from abutting the switch contact of the second switch, so that the second switch is in an open state.

[0016] In some alternatives, the second switch is provided at a side wall of the second housing part, and an end of the movable element opposite to the second switch has a recess and an abutting portion, the recess and the abutting portion are arranged along the second direction; and the movable element is arranged such that, when the movable element is in the initial position, the abutting portion of the movable element abuts the switch contact of the second switch, so that the second switch is in a closed state; and when the movable element moves away from the initial position in the second direction, the switch contact of the second switch falls into the recess along the abutting portion of the movable element, so that the second switch is in an open state.

[0017] In some alternatives, the switch contact of the second switch has a guide portion for guiding the movable element to return to the initial position.

[0018] In some optional forms, the movable element is biased in the initial position by the first elastic element.

[0019] In some optional forms, the movable element is provided with a slot, and the second housing part is provided with a corresponding limiting part, wherein the slot of the movable element is adapted to engage with the limiting part of the second housing part to keep the movable element in the initial position.

[0020] In some optional forms, the movable element has two insertion arms, which are respectively located on both sides of the radial direction of the male connector when inserted into the gap.

[0021] In some optional forms, the indication unit is an indicator light.

[0022] The detection device according to the present application is simple to operate, and can provide different indication signals when the quick connector and the male connector are correctly connected and not correctly connected, so that the detection personnel can quickly and intuitively judge the connection state of the quick connector and the male connector. In addition, the detection device of the present application can be applied to quick connectors of various structural shapes, and has good universality. BRIEF DESCRIPTION OF DRAWINGS

[0023] Other features and advantages of the present application will be better understood through the following detailed description of optional embodiments with reference to the accompanying drawings, wherein the same reference signs identify the same or similar parts, and wherein:

[0024] Figure 1 is a perspective view of the detection device according to the present application when used to detect the connection state of a quick connector;

[0025] Figure 2A and Figure 2B is a schematic view of a male connector to which the detection device according to the present application is applicable;

[0026] Figure 3 is a perspective view of the detection device according to the present application;

[0027] Figure 4 is an exploded view of the detection device according to the present application;

[0028] Figure 5 is a side view of the detection device according to the present application;

[0029] Figure 6 is a cross-sectional view of the detection device according to the present application taken along the line A-A in Figure 5

[0030] Figure 7 is a perspective view of a movable component of the detection device according to the present application; and​

[0031] Figure 8 is a schematic circuit diagram of a detection circuit of the detection device according to the present application. DETAILED DESCRIPTION

[0032] The implementation and use of the embodiments will now be discussed in detail. It should be appreciated that the specific embodiments discussed are merely illustrative of specific ways to implement and use the application and do not limit the scope of the application. In describing the various components of the application, relative terms such as upper, lower, top, bottom, and the like are used to more particularly illustrate the orientation of the various components. These terms are relative to the orientation of the various components as shown in the drawings, and would change if the orientation of the various components were changed.

[0033] In the present application, the terms "connected", "connection" and the like are to be construed broadly in accordance with the context in which they are used. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection, or an indirect connection via an intermediate medium. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

[0034] Figure 1 A perspective view of the detection device 100 according to the present application is shown when the detection device 100 is used to detect the connection state of the quick connector 102. Figure 2A And Figure 2B An example of a male connector to which the detection device 100 is applicable is shown.

[0035] Referring to Figures 1 to 2B , the detection device 100 can be used to detect whether the quick connector 102 is properly connected to the male connectors 104a, 104b.

[0036] The quick connector 102 can include a connector body 106 into which the male connectors 104a, 104b can be inserted, a lock 107 that can move in a direction perpendicular to the insertion direction D of the male connectors 104a, 104b within the connector body 106 to a locked position to lock the male connectors 104a, 104b that have been inserted in place, and a detection circuit 100 that detects whether the male connectors 104a, 104b have been properly inserted into the connector body 106. i The lock 107 of the quick connector 102 can have different structures according to the different male connectors 104a, 104b.

[0037] Figure 2A And Figure 2BMale connectors 104a, 104b adapted to be connected with quick connector 102 are shown respectively. End portions 105a, 105b of male connectors 104a, 104b respectively can be inserted into connector body 106. Male connector 104a has a circumferential annular groove 108 which can be engaged with the engagement structure of the corresponding lock 107 so that male connector 104a is locked. Male connector 104b has a circumferential annular flange 110 which can be engaged with the engagement structure of the corresponding lock 107 so that male connector 104b is locked. Male connectors 104a, 104b (hereinafter collectively referred to as male connector 104) each has a shoulder 112a, 112b (hereinafter collectively referred to as shoulder 112) extending in the radial direction thereof. When male connector 104 is connected with quick connector 102, there is a gap between the end face 114 of quick connector 102 and the shoulder 112 of male connector 104. Unless otherwise specified, the gap between quick connector and male connector in the present application refers to the gap between the end face of quick connector and the shoulder of male connector when they are connected.

[0038] The present application only shows an example of quick connector and male connector. Those skilled in the art can understand that the detection device of the present application can be used for quick connectors and male connectors of various structures as long as they have a gap in the insertion direction of male connector after being connected.

[0039] Referring to Figure 3 , Figure 6 and Figure 8The detection device 100 can include a housing 116, an actuating element 118 connected to the housing 116 and movable between a non-working position and a working position, a movable element 120 movably arranged in the housing 116 and having an insertion arm 122 extending from the housing 116, the insertion arm 122 of the movable element 120 extending in a first direction D1 and being insertable into a gap between the quick connector 102 and the male connector 104, a first elastic element 124 connecting the movable element 120 and the actuating element 118, and a detection circuit 126 mounted to the housing 116 and including a first switch 128, a second switch 130 and an indication unit 132 connected in series with each other. The movable element 120 is in an initial position when the actuating element 118 is in the non-working position, and has a tendency to move away from the initial position in a second direction D2 under the elastic force of the first elastic element 124 when the actuating element 118 is moved from the non-working position to the working position. The actuating element 118 is arranged to switch the first switch 128 from an open state to a closed state when moved from the non-working position to the working position. The movable element 120 is arranged to switch the second switch 130 from a closed state to an open state when moved away from the initial position in the second direction D2. The first direction D1 is not parallel to the second direction D2. In the illustrated embodiment, the first direction D1 is a horizontal direction, and the second direction D2 is a vertical direction.

[0040] In particular, as shown in Figure 3 and Figure 4 , the housing 116 can include a first housing part 134 and a second housing part 136. The first housing part 134 and the second housing part 136 can be connected to each other by a bolt 138 and a stud 140. The first housing part 134 is L-shaped and includes a horizontal section 142 and a vertical section 144. A vertical through hole 146 is arranged in the vertical section 144 of the first housing part 134. The second housing part 136 is hollow and extends substantially in a vertical direction. The second housing part 136 includes an insertion portion 148 extending in a horizontal direction, which can provide a support force point against the shoulder 112 of the male connector 104 when the detection device 100 is used. The thickness of the insertion portion 148 of the second housing part 136 can be substantially equal to or slightly smaller than the gap between the quick connector 102 and the male connector 104 connected to each other.

[0041] As shown in Figures 3 to 6 , the actuating element 118 can be pivotably connected to the first housing part 134 and be pivotable between the non-working position and the working position. In Figure 1 , Figure 3 , Figure 5 and Figure 6In the initial position, the actuating element 118 is in the non- working position. The actuating element 118 can be pivoted in the direction D p to the working position (not shown). Accordingly, the horizontal section 142 of the first housing part 134 can be provided with a stop face 156, such that the actuating element 118 can be pivoted into abutment with the stop face 156 of the first housing part 134 to be held in the working position. The actuating element 118 comprises a first section 150 and a second section 152 on either side of the pivot point thereof. The first section 150 of the actuating element 118 is connected to the movable element 120 by means of the first resilient element 124. The second section 152 of the actuating element 118 is provided with the second resilient element 154 between the horizontal section 142 of the first housing part 134 for resetting the actuating element 118. The second resilient element 154 can be a helical spring.

[0042] As Figures 4 to 7 shown, the movable element 120 is arranged within the second housing part 136 and is movable in the vertical direction within the second housing part 136. The movable element 120 comprises a main body 121 and two insertion arms 122, which both extend from the main body 121 in the horizontal direction outside the first side wall 157 of the second housing part 136. The first side wall 157 of the second housing part 136 is further provided with an opening 158, such that the movable element 120 is movable in the vertical direction within the range of the opening 158. The insertion arms 122 of the movable element 120 can be inserted into the gap between the quick connector 102 and the male connector 104 connected to one another. The thickness of the insertion arms 122 of the movable element 120 can be substantially equal to or slightly smaller than the gap between the quick connector 102 and the male connector 104 connected to one another. In the initial position of the movable element 120, the insertion arms 122 of the movable element 120 are substantially flush with the insertion portion 148 of the second housing part 136. The two insertion arms 122 of the movable element 120 are each located on either side of the radial direction of the male connector 104 when inserted into the gap between the quick connector 102 and the male connector 104 connected to one another.

[0043] As Figure 4 and Figure 6As shown, the first elastic element 124 is disposed within the second housing portion 136. The first elastic element 124 can be a coil spring. A first end 160 of the first elastic element 124 is connected to the main body 121 of the movable element 120 by a connecting pin 170a. A second end 162 of the first elastic element 124, a sleeve 164, a first connecting member 166, a second connecting member 168 and the first section 150 of the actuating element 118 are connected in sequence by connecting pins 170b, 170c, 170d, 170e. The sleeve 164 is disposed within a vertical through hole 146 in the vertical section 144 of the first housing portion 134, and an outer diameter of the sleeve 164 can be only slightly smaller than an inner diameter of the vertical through hole 146 of the first housing portion 134, so as to facilitate smooth movement of the sleeve 164 in the vertical direction in the vertical through hole 146 of the first housing portion 134. The first connecting member 166 is disposed in the sleeve 164, and two ends of the second connecting member 168 are pivotally connected to the first connecting member 166 and the first section 150 of the actuating element 118, respectively.

[0044] When the actuating element 118 is in the non-working position, the first elastic element 124 can be in a compressed state, so as to bias the movable element 120 in the initial position. The bottom of the main body 121 of the movable element 120 can be provided with a slotted opening 172 which is open downward in the vertical direction. Correspondingly, the bottom of the second housing portion 136 is provided with a limiting portion 174. In the illustrated embodiment, the limiting portion 174 is a horizontal limiting pin which traverses the second housing portion 136. The slotted opening 172 of the movable element 120 can engage with the limiting pin 174 of the second housing portion 136, so as to keep the movable element 120 in the initial position. Alternatively, the limiting portion 174 can also be a limiting protrusion provided on the second housing portion 136. It can be understood that when the actuating element 118 is in the non-working position, the first elastic element 124 can also be in an original state or a stretched state, and the movable element 120 can be biased in the initial position by its own gravity or a counterweight.

[0045] With reference to the foregoing Figure 1 In the case where the insertion arm 122 of the movable element 120 of the detection device 100 is inserted into the gap between the quick connector 102 and the male connector 104 which are connected to each other, when the second section 152 of the actuating element 118 is pressed to make the actuating element 118 move in the direction D pWhen pivoted to the working position, the actuating element 118 will cause the second connecting element 168 to pivot and in turn cause the first connecting element 166, the sleeve 164 and the second end 162 of the first elastic element 124 to move upward in the vertical direction. At this time, the movable element 120 will remain in the initial position because the insertion arm 122 of the movable element 120 is stopped by the end face 114 of the quick connector 102, and the first elastic element 124 will be stretched. The movable element 120 has a tendency to move upward in the vertical direction away from the initial position under the action of the pulling force of the first elastic element 124, and exerts a force on the end face 114 of the quick connector 102. The elastic coefficient of the first elastic element 124 can be set such that the aforementioned force is greater than or equal to the force that separates the incorrectly connected quick connector 102 from the male connector 104 and less than the force that separates the correctly connected quick connector 102 from the male connector 104. In this way, if the quick connector 102 is not correctly connected to the male connector 104, the quick connector 102 will be separated from the male connector 104 under the action of the force of the movable element 120, at which time the insertion arm 122 of the movable element 120 is no longer stopped by the end face 114 of the quick connector 102, so that the movable element 120 can move away from the initial position in the vertical direction; if the quick connector 102 is correctly connected to the male connector 104, the quick connector 102 will continue to be connected to the male connector 104, and the movable element 120 will remain in the initial position. After that, if the pressing force on the second section 152 of the actuating element 118 is removed, the actuating element 118 will return to the non-working position under the action of the second elastic element 154, while causing the first elastic element 124 to move downward, thereby causing the movable element 120 to return to the initial position or continue to remain in the initial position.

[0046] In the case of a Figure 1When the detection device 100 is used in the above manner, the detection device 100 and the quick connector 102 are opposite each other in the horizontal direction. When the movable element 120 tends to move away from its initial position, the insertion arm 122 of the movable element 120 applies a force to the end face 114 of the quick connector 102, while the insertion portion 148 of the second housing portion 136 applies a force to the shoulder 112 of the male connector 104. It is understood that the detection device 100 can also be used in reverse. In this case, the detection device 100 and the male connector 104 are opposite each other in the horizontal direction. When the movable element 120 tends to move away from its initial position, the insertion arm 122 of the movable element 120 applies a force to the shoulder 112 of the male connector 104, while the insertion portion 148 of the second housing portion 136 applies a force to the end face 114 of the quick connector 102. In the illustrated embodiment, the insertion arm 122 of the movable element 120 extends horizontally. The movable element 120 is disposed within the vertical second housing portion 136 and is movable vertically. The extension direction of the insertion arm 122 of the movable element 120 is perpendicular to the movement direction of the movable element 120, such that when the movable element 120 is inserted between the quick connector 102 and the male connector 104 connected to each other, the insertion arm 122 of the movable element 120 can apply a force to the end face 114 of the quick connector 102 or the shoulder 112 of the male connector 104. It is understood that the extension direction of the insertion arm 122 of the movable element 120 can also be at other angles to the movement direction of the movable element 120, as long as they are not parallel so that the movable element 120 can apply a force to the end face 114 of the quick connector 102 or the shoulder 112 of the male connector 104 when it moves.

[0047] like Figure 4 as well as Figures 6 to 8 As shown, the detection circuit 126 may include a first switch 128, a second switch 130, an indicator unit 132, a resistive element 176, and a power supply 178 connected in series with each other.

[0048] A first switch 128 is disposed at the bottom of the horizontal section 142 of the first housing portion 134. The first switch 128 has a switch contact 180. When the actuating element 118 is in the non-operating position, the second section 152 of the actuating element 118 moves away from the switch contact 180 of the first switch 128, causing the first switch 128 to be in the open state. When the actuating element 118 pivots to the operating position, the second section 152 of the actuating element 118 abuts against and presses the switch contact 180 of the first switch 128, causing the first switch 128 to be in the closed state. Optionally, the first switch 128 can be a micro switch, a proximity switch, or other suitable switch.

[0049] The second switch 130 is arranged at the second side wall 181 of the second housing part 136. The second switch 130 has a switch contact 182. The end of the movable element 120 opposite to the second switch 130 is provided with a recess 184 and an abutment 186. In the illustrated embodiment, the abutment 186 of the movable element 120 is a part of the end face of the movable element 120. Alternatively, the abutment 186 can also be a protrusion. The recess 184 and the abutment 186 of the movable element 120 are arranged along the vertical direction, with the abutment 186 being above the recess 184. When the movable element 120 is in the initial position, the abutment 186 of the movable element 120 abuts against the switch contact 182 of the second switch 130, so that the second switch 130 is in the closed state; when the movable element 120 is moved upward along the vertical direction from the initial position, the switch contact 182 of the second switch 130 falls into the recess 184 along the abutment 186 of the movable element 120, so that the second switch 130 is in the open state. The switch contact 182 of the second switch 130 has a guide 188 for guiding the movable element 120 to return to the initial position. In the illustrated embodiment, the guide 188 is in the form of an inclined surface, so as to guide the movable element 120 to return to the initial position smoothly. Alternatively, the second switch 130 can be a micro switch, a proximity switch or other suitable switch.

[0050] In the illustrated embodiment, the indication unit 132 is an LED indication light, and is arranged at the end of the horizontal section 142 of the first housing part 134 close to the second housing part 136. It can be understood that the indication unit 132 can also be other types of indication light, a vibrating component, a buzzer, etc. The indication unit 132 can also be arranged at other suitable positions.

[0051] In the illustrated embodiment, the power supply 178 is a button cell, and is arranged at the end of the horizontal section 142 of the first housing part 134 away from the second housing part 136. It can be understood that the power supply 178 can also be other types of primary battery, rechargeable battery, wired power supply, etc. The use mode of the detection device 100 according to the present application will be described below in combination with the power supply 178. Figures 1 to 8 The use mode of the detection device 100 according to the present application will be described below in combination with the power supply 178.

[0052] When the detection device 100 is not in use, the actuating element 118 is in the non-working position, at this time, the first switch 128 is in the open state, the movable element 120 is in the initial position, and the second switch 130 is in the closed state. Thus, the detection circuit 126 is in the open state, and the LED indication light 132 is not lit.

[0053] In the use of the detection device 100 to detect whether the quick connector 102 and the male connector 104 connected with each other are connected correctly, first, the insertion part 148 of the second housing part 136 and the insertion arm 122 of the movable element 120 are inserted into the gap between the quick connector 102 and the male connector 104, and then the second section 152 of the actuating element 118 is pressed to make the actuating element 118 pivot to the working position. At this time, as described above, the first switch 128 will be closed, and the movable element 120 will have a tendency to move upward along the vertical direction and exert a force on the end face 114 of the quick connector 102: if the quick connector 102 and the male connector 104 are connected correctly, the movable element 120 remains in the initial position, the second switch 130 is still in the closed state, the detection circuit 126 is in the on state, and the LED indicator 132 is on; if the quick connector 102 and the male connector 104 are not connected correctly, they will be separated under the action of the movable element 120, and the movable element 120 will move upward along the vertical direction, and the switch contact 182 of the second switch 130 will fall into the recess 184 of the movable element 120, so that the second switch 130 is opened, the detection circuit 126 is in the off state, and the LED indicator 132 is still not on.

[0054] Therefore, the detection personnel can intuitively judge the connection state of the quick connector and the male connector by operating the detection device 100 and observing whether the LED indicator 132 is on. It should be understood that, Figures 1 to 8 The embodiments shown only show the shape, size and arrangement of the various optional components of the detection device according to the present application, but are only illustrative and not limiting, and other shapes, sizes and arrangements can also be taken without departing from the idea and scope of the present application.

[0055] For example, the detection circuit 126 can also have other configurations, as long as the detection circuit 126 can be in different states in response to the position change of the movable element 120, so that when the actuating element 118 moves from the non-working position to the working position, the indication unit 132 provides different indication signals when the quick connector 102 and the male connector 104 are correctly connected and not correctly connected, so that the detection personnel can judge the connection state of the quick connector 102 and the male connector 104 according to the indication signal.

[0056] It should be noted that the indication signal provided by the indication unit 132 here can refer to the state of the indication unit 132. Taking the LED indicator as an example, the on and off of the LED indicator belong to two different indication signals. In addition, the indication signal can also refer to the switching of the indication unit state, for example, the switching of the LED indicator from on to off belongs to one indication signal, and the switching of the LED indicator from off to on belongs to another indication signal.

[0057] Optionally, the detection circuit 126 can not include the first switch 128, but only include the second switch 130. When the movable element 120 is in the initial position, the switch contact 182 of the second switch 130 abuts against the abutting portion 186 of the movable element 120, so that the second switch 130 is in the closed state, at this time, the LED indicator lamp 132 is on. Thus, when the actuating element 118 is pivoted to the working position, if the quick connector 102 is correctly connected with the male connector 104, the movable element 120 remains in the initial position, the second switch 130 remains closed, the detection circuit 126 remains in the on state, and the LED indicator lamp 132 remains on; if the quick connector 102 is not correctly connected with the male connector 104, the movable element 120 moves away from the initial position, the switch contact 182 of the second switch 130 enters the recess 184 so that the second switch 130 is opened, the detection circuit 126 is in the off state, and the LED indicator lamp 132 is turned off from on, indicating that the quick connector 102 is not correctly connected with the male connector 104.

[0058] Optionally, the detection circuit 126 can not include the first switch 128, but only include the second switch 130; and the end portion of the movable element 120 opposite to the second switch 130 is still provided with the recess 184 and the abutting portion 186 along the vertical direction, which is different from the illustrated embodiment in that the abutting portion 186 is below the recess 184. Thus, when the movable element 120 is in the initial position, the switch contact 182 of the second switch 130 extends into the recess 184, so that the second switch 130 is in the open state; when the movable element 120 moves upward along the vertical direction away from the initial position, the switch contact 182 of the second switch 130 is abutted and pressed by the abutting portion 186 of the movable element 120, so that the second switch 130 is in the closed state. Thus, when the actuating element 118 is pivoted to the working position, if the quick connector 102 is correctly connected with the male connector 104, the movable element 120 remains in the initial position, the second switch 130 remains opened, the detection circuit 126 remains in the off state, and the LED indicator lamp 132 is off; if the quick connector 102 is not correctly connected with the male connector 104, the movable element 120 moves away from the initial position, the second switch 130 is closed, the detection circuit 126 is in the on state, and the LED indicator lamp 132 is on.

[0059] Optionally, the detection circuit 126 can include both the first switch 128 and the second switch 130. However, the first switch 128 can be a separate switch not controlled by the actuating element 118. The first switch 128 can be manually opened when the detection device 100 is not in use and manually closed when the detection device 100 is in use. In this way, when detection is performed using the detection device 100, the first switch 128 can be closed first, and since the movable element 120 is kept in the initial position at this time, the second switch 130 is also in the closed state, the detection circuit 126 is in the on state, and the LED indicator 132 is on. Then the actuating element 118 is pivoted to the working position, at which time, if the quick connector 102 is properly connected with the male connector 104, the movable element 120 is kept in the initial position, the detection circuit 126 is kept in the on state, and the LED indicator 132 is kept on. If the quick connector 102 is not properly connected with the male connector 104, the movable element 120 is away from the initial position, the second switch 130 is opened, the detection circuit 126 is in the off state, and the LED indicator 132 is off. After detection is completed, the first switch 128 can be manually opened.

[0060] The technical content and technical features of the present application have been disclosed above. However, it should be understood that, under the creative thought of the present application, those skilled in the art can make various changes and improvements to the disclosed concepts, which all belong to the protection scope of the present application. The above description of the embodiments is exemplary rather than restrictive, and the protection scope of the present application is defined by the claims.

Claims

1. A detection device adapted to detect a connected state of a quick connector and a male connector, the male connector having a shoulder portion extending in a radial direction thereof, and a gap being present between an end surface of the quick connector and the shoulder portion of the male connector when the male connector is connected to the quick connector, characterized in that, The detection device comprises a housing, an actuating element connected to the housing and adapted to move between a non-working position and a working position, a movable element movably arranged in the housing and having an insertion arm extending from the housing, the insertion arm extending in a first direction and being adapted to be inserted into the gap, a first elastic element connecting the movable element with the actuating element such that the movable element is in an initial position when the actuating element is in the non-working position and has a tendency to move away from the initial position in a second direction under the action of an elastic force of the first elastic element when the actuating element moves from the non-working position to the working position, wherein the first direction is not parallel to the second direction, and a detection circuit mounted to the housing and comprising an indicating unit, the detection circuit being configured to be in different states in response to a change in position of the movable element such that the indicating unit provides different indicating signals in the case of a correct connection and an incorrect connection of the quick connector and the male connector respectively when the actuating element moves from the non-working position to the working position. The insertion arm of the movable element is adapted to exert a force on an end face of the quick connector or a shoulder of the male connector in response to the action of the elastic force of the first elastic element when the insertion arm is inserted into the gap and the actuating element is moved to the working position, the elastic coefficient of the first elastic element being set such that the force is greater than or equal to a force separating the incorrectly connected quick connector and the male connector and less than a force separating the correctly connected quick connector and the male connector.

2. The detection device of claim 1, wherein, The first direction is perpendicular to the second direction.

3. The detection device according to claim 1 or 2, characterized in that The detection circuit further comprises a first switch and a second switch, the first switch, the second switch and the indicating unit being connected in series with each other, wherein the actuating element is arranged to switch the first switch from an open state to a closed state when moving from the non-working position to the working position, and the movable element is arranged to switch the second switch from a closed state to an open state when moving away from the initial position in the second direction.

4. The detection device of claim 3, wherein, The housing comprises a first housing part, and the actuating element is pivotably connected to the first housing part.

5. The detection device of claim 4, wherein, The actuating element comprises a first section and a second section located on both sides of a pivot point thereof, the first section being connected with the movable element by the first elastic element, and a second elastic element being arranged between the second section and the first housing part for resetting the actuating element.

6. The detection device of claim 5, wherein, The first switch is arranged in the first housing part and has a switch contact, and the actuating element is arranged such that the second section of the actuating element abuts against the switch contact of the first switch when the actuating element is pivoted to the working position, so that the first switch is in a closed state. When the actuating element is pivoted into the inoperative position, the second section of the actuating element is moved away from the switch contact of the first switch, so that the first switch is in an open state.

7. The detection device of claim 4, wherein, The housing comprises a second housing part connected to the first housing part, and the movable element is arranged in the second housing part and is adapted to move in the second direction within the second housing part.

8. The detection device of claim 7, wherein, The second switch is arranged in the second housing part and has a switch contact, and the movable element is arranged such that, when the movable element is in the initial position, the movable element abuts against the switch contact of the second switch, so that the second switch is in a closed state; and when the movable element moves away from the initial position in the second direction, the movable element is disengaged from abutting against the switch contact of the second switch, so that the second switch is in an open state.

9. The detection device of claim 8, wherein, The second switch is arranged at a side wall of the second housing part, and an end of the movable element opposite to the second switch has a recess and an abutting portion, which are arranged along the second direction; and the movable element is arranged such that, when the movable element is in the initial position, the abutting portion of the movable element abuts against the switch contact of the second switch, so that the second switch is in a closed state; and when the movable element moves away from the initial position in the second direction, the switch contact of the second switch falls into the recess along the abutting portion of the movable element, so that the second switch is in an open state.

10. The detection device of claim 8, wherein, The switch contact of the second switch has a guide portion for guiding the movable element to return to the initial position.

11. The detection device of claim 7, wherein, The movable element is provided with a slot, and the second housing part is provided with a corresponding limiting portion, Wherein, the slot of the movable element is adapted to engage with the limiting portion of the second housing part to keep the movable element in the initial position.

12. The detection device according to claim 1 or 2, characterized in that, The movable element is biased in the initial position by the first elastic element.

13. The detection device according to claim 1 or 2, characterized in that The movable element has two insertion arms, which are respectively located on both sides of the radial direction of the male connector when inserted into the gap.

14. The detection device according to claim 1 or 2, characterized in that, The indicating unit is an indicating lamp.

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