Anti-collision device
By using light touch switches or membrane switches, protective glue and transparent materials in the safety touch edge, the traditional safety touch edge has solved the problem of large size and poor reliability, and a small and high-reliability anti-collision device is realized, ensuring that Safe avoidance of equipment and people or obstacles.
Patent Information
- Application Number
- CN202420205394.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-26
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-01-26
AI Technical Summary
Traditional safety contact edges have problems such as large size and poor reliability, and it is difficult to effectively avoid collisions between mobile devices and people or obstacles.
A collision avoidance device including circuit board, protective glue and protective case is designed, using a touch switch or a membrane switch, and the protective glue covers the switch structure, and enhances protection through protective case and transparent materials, circuit board and movable equipment. Electrically connected, when a collision occurs, the protective glue deforms trigger the switch, sending a signal to avoid collision.
A small size and high reliability anti-collision device is realized to ensure the safety of the operators. The buffer protection of the protective glue and circuit board improves the working reliability and avoids damage to the switches and circuit boards.
Smart Images
Figure CN222147950U_ABST
Abstract
Description
Technical Field
[0001] The present application belongs to the technical field of protective facilities, and in particular, relates to an anti-collision device. Background Art
[0002] The safety touch edge, as an anti-collision device, can be applied to mobile robots, electric doors, and lifting platforms. It is installed on movable equipment. When the installed touch edge collides with a person or an obstacle and is squeezed, the installed touch edge is triggered and sends a signal to the movable equipment. After receiving the signal, the movable equipment stops moving or changes the direction of movement, thereby avoiding collision between the movable equipment and a person or an obstacle.
[0003] Conventional safety edges generally include a rubber frame and two conductive strips disposed inside the rubber frame, both conductive strips being electrically connected to a movable device, and when the rubber frame is squeezed so that the two conductive strips come into contact and conduct electricity, the safety edge is triggered and sends a signal to the movable device. However, such safety edges have the problems of being large in size and having poor reliability. Utility Model Content
[0004] The purpose of the present application is to provide an anti-collision device, aiming to solve the technical problems of large safety touch edge volume and poor reliability in the prior art.
[0005] To achieve the above-mentioned purpose, the technical solution adopted in this application is: an anti-collision device, including a circuit board and protective glue, the circuit board is used to be electrically connected to a movable device, a switch structure is arranged on one side surface of the circuit board, the switch structure is a touch switch or a membrane switch, the protective glue is bonded to the circuit board and the switch structure, the protective glue covers the switch structure, and covers the side of the circuit board where the switch structure is arranged, and the protective glue can be deformed after being pressed.
[0006] Furthermore, there are multiple switch structures, and the multiple switch structures are arranged in parallel.
[0007] Furthermore, a light-emitting structure is also provided on the circuit board, and when the switch structure is triggered, the light-emitting structure can emit light.
[0008] Furthermore, the anti-collision device also includes a protective shell, which is connected to the protective glue and covers a side of the protective glue that is away from the circuit board, and the protective shell can be deformed after being compressed.
[0009] Furthermore, a light-emitting structure is also provided on one side of the circuit board on which the switch structure is provided. The light-emitting structure is exposed outside the protective glue, and the protective shell covers the light-emitting structure. The light emitted by the light-emitting structure can penetrate the protective shell.
[0010] Furthermore, the protective shell is made of transparent material.
[0011] Furthermore, the protective shell is tubular, and the protective glue and the circuit board are both arranged in the protective shell.
[0012] Furthermore, the protective shell is a heat shrinkable tube.
[0013] Furthermore, the protective shell is also connected to the circuit board and covers a side of the circuit board facing away from the switch structure.
[0014] Furthermore, a portion of the protective shell covering a side surface of the circuit board facing away from the switch structure is provided with a connecting structure, and the connecting structure is used for being installed on a movable device.
[0015] Compared with the prior art, the beneficial effect of the anti-collision device provided by the present application is that: when in use, the anti-collision device is installed on a movable device, so that the circuit board is electrically connected to the movable device. When the protective glue collides with a person or an obstacle, the protective glue will deform and exert pressure on the switch structure. When the switch structure is triggered, the anti-collision device detects the collision, and the circuit board sends a signal to the movable device. After receiving the signal, the movable device stops moving or changes the direction of movement to avoid colliding with a person or an obstacle. The switch structure adopts a touch switch or a membrane switch, which is not only small in size and can reduce the overall size of the anti-collision device, but also has high reliability to ensure the safety of the operator. The protective glue covers the switch structure and covers the side of the circuit board where the switch structure is set, which can play a buffering and protective role on the switch structure and the circuit board, effectively avoiding damage to the switch structure and the circuit board, and improving work reliability. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0017] Figure 1 A schematic diagram of the structure of the anti-collision device provided in an embodiment of the present application;
[0018] Figure 2 for Figure 1 An enlarged view of the anti-collision device at position A is shown;
[0019] Figure 3 for Figure 1 A cross-sectional view of the anti-collision device shown.
[0020] Among them, the reference numerals in the figure are:
[0021] 10. Circuit board; 20. Protective glue; 30. Light-emitting structure; 40. Protective shell; 50. Connection structure; 60. Cable. DETAILED DESCRIPTION
[0022] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.
[0023] In the description of the present application, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.
[0024] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.
[0025] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0026] Traditional safety edges generally include a rubber frame and two conductive strips arranged in the rubber frame. Both conductive strips are electrically connected to the movable device. When the rubber frame is squeezed and the two conductive strips are in contact and conductive, the safety edge is triggered and sends a signal to the movable device. However, this type of safety edge has the problems of large size and poor reliability. To this end, the present application provides an anti-collision device with the advantages of small size and high reliability. For the specific structure, see Figure 1 and Figure 2The anti-collision device includes a circuit board 10 and a protective glue 20. The circuit board 10 is used to be electrically connected to a movable device. A switch structure (not shown) is arranged on one side of the circuit board 10. The switch structure is a touch switch or a membrane switch. The protective glue 20 is bonded to the circuit board 10 and the switch structure. The protective glue 20 covers the switch structure and covers the side of the circuit board 10 where the switch structure is arranged. The protective glue 20 can be deformed after being pressed.
[0027] When in use, the anti-collision device is installed on a movable device, the circuit board 10 is electrically connected to the movable device, and the side of the circuit board 10 provided with the switch structure is facing away from the movable device. When the protective glue 20 collides with a person or an obstacle, the protective glue 20 will deform and exert pressure on the switch structure. When the switch structure is triggered, the anti-collision device detects the collision, and the circuit board 10 sends a signal to the movable device. After receiving the signal, the movable device stops moving or changes the direction of movement to avoid colliding with a person or an obstacle. The switch structure adopts a touch switch or a membrane switch, which is not only small in size and can reduce the overall size of the anti-collision device, but also has high reliability to ensure the safety of the operator. The protective glue 20 covers the switch structure and covers the side of the circuit board 10 provided with the switch structure, which can play a buffering and protective role on the switch structure and the circuit board 10, effectively avoiding damage to the switch structure and the circuit board 10, and improving working reliability.
[0028] The type of the touch switch is not specifically limited, and generally includes a base, a spring, a contact, a cover plate and a button. The base is provided with a mounting groove, and the contact is arranged in the mounting groove. The contact includes a central static contact and a peripheral static contact, and the peripheral static contact is arranged on the periphery of the central static contact. The central static contact and the peripheral static contact are both connected to the circuit board 10 through pins. The spring is arranged in the mounting groove and is located above the contact. The edge of the spring abuts against the peripheral static contact. The cover plate is arranged on the base and covers the opening of the mounting groove. The cover plate is provided with a through hole connected to the mounting groove. The button is slidably arranged in the through hole. One end of the button extends into the mounting groove and abuts against the spring, and the other end of the button extends out of the cover plate. When the protective glue 20 covering the touch switch is deformed under pressure, the protective glue 20 applies pressure to the end of the button extending out of the cover plate, and the button slides in the direction of entering the mounting groove, causing the spring to deform. When the middle of the spring contacts the central static contact, the circuit is connected, and the circuit board 10 sends a signal to the movable device.
[0029] The type of membrane switch is not specifically limited, and it generally includes a panel layer, an upper circuit layer, and a lower circuit layer stacked in sequence, and the lower circuit layer is electrically connected to the circuit board 10. When the protective glue 20 covering the touch switch is deformed under pressure, the protective glue 20 applies pressure to the upper circuit layer through the panel layer, causing the upper circuit layer to deform downward. When the upper circuit layer contacts the lower circuit layer, the circuit is connected, and the circuit board 10 sends a signal to the movable device.
[0030] The circuit board 10 can be a hard board or a flexible board. Specifically, the circuit board 10 is a flexible circuit board 10, which is thin and flat, and is conducive to reducing the overall size of the anti-collision device. It can be bent arbitrarily and can adapt to anti-collision devices of different shapes. For example, when the shape of the anti-collision device is set to an arc, the circuit board 10 can be bent into a shape corresponding to the shape of the anti-collision device. In addition, the circuit board 10 is a flexible board, which is more convenient to install.
[0031] The type of protective glue 20 may not be specifically limited. For example, the protective glue 20 may be made of epoxy resin, silicone or PU glue. By selecting different materials or adjusting the ratio of each component, the hardness of the protective glue 20 can be adjusted to control the detection sensitivity of the anti-collision device. Generally speaking, the higher the hardness of the protective glue 20, the less likely the switch structure is to be triggered, that is, the lower the detection sensitivity of the anti-collision device; conversely, the lower the hardness of the protective glue 20, the easier the switch structure is to be triggered, that is, the higher the detection sensitivity of the anti-collision device.
[0032] In one embodiment, the number of switch structures is multiple, and multiple switch structures are arranged in parallel. Multiple switch structures are arranged in parallel and are independent of each other, so that as long as any one or more switch structures are pressed and triggered, the detection of collision can be realized, which greatly improves the reliability of the work. A gap may be set between two adjacent switch structures, or no gap may be set. For occasions with a small collision area or a small collision force, no gap may be set between two adjacent switch structures, or the gap may be minimized as much as possible, that is, the distribution density of the switch structure is increased to realize "point" force detection. For occasions with a large collision area or a large collision force, for example, when the anti-collision device is applied to a car to avoid a rear-end collision, the gap between the two switch structures can be appropriately increased, that is, the distribution density of the switch structure is reduced, and the "surface" force detection can be realized. In this way, while meeting the requirements of collision detection, the number of switch structures used can be reduced, and the production cost and manufacturing difficulty can be reduced. Specifically, the circuit board 10 is in a strip shape, and the multiple switch structures are evenly spaced along the length direction of the circuit board 10. The anti-collision device provided in the embodiment of the present application is arranged as a strip shape as a whole, which is similar to the traditional safety touch edge in appearance, and is particularly suitable for installation on the edge of the outer surface of a movable device.
[0033] In one embodiment, Figure 3As shown, a light-emitting structure 30 is also provided on the circuit board 10, and when the switch structure is triggered, the light-emitting structure 30 can emit light. The light emitted by the light-emitting structure 30 can serve as a warning, reminding the operator that the switch structure has been triggered, and on the other hand, it serves as a decoration, improving the overall aesthetics of the anti-collision device. The number of light-emitting structures 30 is consistent with the number of switch structures, and multiple light-emitting structures 30 are arranged in parallel. Multiple light-emitting structures 30 are arranged one-to-one with multiple switch structures. When the switch structure is triggered, the corresponding light-emitting structure 30 will be lit, and the operator can judge the area where the anti-collision device is hit according to the lighting of the light-emitting structure 30. Specifically, the light-emitting structure 30 can use LED lamp beads, and the color of the light of the LED lamp beads is not limited. Yellow or red can be selected, and the warning effect is better. Specifically, the light-emitting structure 30 is arranged on the side surface of the circuit board 10 where the switch structure is arranged, and the protective glue 20 is exposed to allow the light emitted by the light-emitting structure 30 to be emitted to the outside. Of course, in some other embodiments, the protective glue 20 may also cover the light emitting structure 30 . In this case, the protective glue 20 needs to be made of a light-transmitting material so that the light emitted by the light emitting structure 30 can pass through the protective glue 20 to the outside.
[0034] In one embodiment, in combination Figure 1 and Figure 2 As shown, the anti-collision device also includes a protective shell 40, which is connected to the protective glue 20 and covers the side of the protective glue 20 facing away from the circuit board 10, and the protective shell 40 can be deformed after being pressed. By setting the protective shell 40 to cover the side of the protective glue 20 facing away from the circuit board 10, it is possible to protect the protective glue 20, reduce the impact of the external environment on the protective glue 20, reduce the aging speed of the protective glue 20, and extend the service life of the protective glue 20. The protective shell 40 can be deformed after being pressed, so that when a collision occurs with a person or an obstacle, the protective shell 40 can be deformed and put pressure on the protective glue 20 to deform the protective glue 20, and the protective glue 20 then puts pressure on the switch structure. When the switch structure is triggered, the anti-collision device detects the collision, and the circuit board sends a signal to the movable device. After receiving the signal, the movable device stops moving or changes the direction of movement to avoid collision with a person or an obstacle.
[0035] In one implementation, the protective shell 40 covers the light emitting structure 30, and the light emitted by the light emitting structure 30 can penetrate the protective shell 40. The protective shell 40 covers the light emitting structure 30, and can protect the light emitting structure 30 exposed outside the protective glue 20. The protective shell 40 is made of a light-transmitting material, so that the light emitted by the light emitting structure 30 can penetrate the protective shell 40 and be emitted to the outside. Specifically, the protective shell 40 can be made of a transparent material, which can allow the light emitted by the light emitting structure 30 to be emitted to the outside on the one hand, and can reveal the color of the protective glue 20 on the other hand, thereby improving the overall aesthetics of the anti-collision device.
[0036] In one embodiment, Figure 2 As shown, the protective shell 40 is also connected to the circuit board 10 and covers the side of the circuit board 10 facing away from the switch structure. The protective glue 20 covers the side of the circuit board 10 provided with the switch structure, and the protective shell 40 covers the side of the circuit board 10 facing away from the switch structure, thereby enhancing the protection of the circuit board 10, effectively preventing the circuit board 10 from being damaged, and thus improving the working reliability of the anti-collision device.
[0037] In one embodiment, Figure 2 As shown, the protective shell 40 covers the side of the circuit board 10 facing away from the switch structure and is provided with a connecting structure 50, and the connecting structure 50 is used to be installed on a movable device. Specifically, the connecting structure 50 can be adhesive, and the protective shell 40 is fixed to the movable device by adhesive bonding, which is very convenient to install. Of course, in some other embodiments, the connecting structure 50 can also be Velcro, screws, buckles, magnets, etc.
[0038] In one embodiment, Figure 2 As shown, the protective shell 40 is tubular, and the protective glue 20 and the circuit board 10 are both arranged in the protective shell 40. By setting the protective shell 40 in a tubular shape, on the one hand, the protective glue 20 and the circuit board 10 can be placed in the protective shell 40 from the end opening of the protective shell 40, and the assembly is very convenient. On the other hand, the protective shell 40 can surround the combination of the protective glue 20 and the circuit board 10 in the circumferential direction, thereby enhancing the protection of the circuit board 10 and the protective glue 20. Specifically, the protective shell 40 can be a heat shrink sleeve, and the heat shrink sleeve has the characteristic of shrinking when exposed to heat. During assembly, the protective glue 20 is first dripped on the side surface of the circuit board 10 where the switch structure is provided, so that the protective glue 20 covers the switch structure and covers the side surface of the circuit board 10 where the switch structure is provided. After the protective glue 20 is formed, the combination of the protective glue 20 and the circuit board 10 is placed in the heat shrink sleeve, and then the heat shrink sleeve is heated. When the heat shrink sleeve reaches a certain temperature, the heat shrink sleeve can shrink by itself to wrap the protective glue 20 and the circuit board 10, and the assembly is very convenient. The type of the heat shrink tubing is not specifically limited, for example, PVC (polyvinyl chloride), PE (polyethylene), PVDF (polyvinyl fluoride), PTFE (polytetrafluoroethylene), etc.
[0039] In one embodiment, Figure 2 As shown, the circuit board 10 is connected with a cable 60, and the cable is used to connect with the movable device. When the switch structure is triggered, the anti-collision device detects the collision, and the circuit board 10 sends a signal to the movable device through the cable.
[0040] In one embodiment, a signal line, a power line, a detection line and a ground line are provided on the circuit board 10, the signal line is connected to the detection line, the switch structure is provided between the signal line and the ground line, and the power line is connected to the light-emitting structure 30. Under normal circumstances, the current output by the movable device flows back to the movable device after passing through the signal line and the detection line in sequence. On the one hand, when the anti-collision device collides with a person or an obstacle and triggers the switch structure, the signal line is connected to the ground line, the level of the detection line changes from a high level to a low level, and the movable device stops moving or changes the direction of movement after receiving the signal to avoid colliding with a person or an obstacle, and outputs a voltage through the power line to light up the light-emitting structure 30 corresponding to the triggered switch structure. On the other hand, when the protective glue 20 is compressed and deformed, causing the signal line or the detection line to break, the current loop is interrupted, the level of the detection line changes from a high level to a low level, and the movable device stops moving or changes the direction of movement after receiving the signal to avoid colliding with a person or an obstacle, and outputs a voltage through the power line to light up the light-emitting structure 30 corresponding to the triggered switch structure.
[0041] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.
Claims
1. An anti-collision device, characterized in that: It includes a circuit board and protective glue, the circuit board is used to be electrically connected to a movable device, a switch structure is arranged on one side surface of the circuit board, the switch structure is a touch switch or a membrane switch, the protective glue is bonded to the circuit board and the switch structure, the protective glue covers the switch structure and covers the side of the circuit board where the switch structure is arranged, and the protective glue can be deformed after being pressed.
2. The anti-collision device according to claim 1, characterized in that: There are multiple switch structures, and the multiple switch structures are arranged in parallel.
3. The anti-collision device according to claim 1, characterized in that: The circuit board is also provided with a light emitting structure, and when the switch structure is triggered, the light emitting structure can emit light.
4. The anti-collision device according to claim 1, characterized in that: The anti-collision device also includes a protective shell, which is connected to the protective glue and covers a side of the protective glue that is away from the circuit board, and the protective shell can be deformed after being compressed.
5. The anti-collision device according to claim 4, characterized in that: A light emitting structure is also provided on one side of the circuit board where the switch structure is provided. The light emitting structure is exposed outside the protective glue, and the protective shell covers the light emitting structure. The light emitted by the light emitting structure can penetrate the protective shell.
6. The anti-collision device according to claim 4, characterized in that: The protective shell is made of transparent material.
7. The anti-collision device according to claim 4, characterized in that: The protective shell is tubular, and the protective glue and the circuit board are both arranged in the protective shell.
8. The anti-collision device according to claim 7, characterized in that: The protective shell is a heat shrinkable sleeve.
9. The anti-collision device according to claim 4, characterized in that: The protective shell is also connected to the circuit board and covers a side surface of the circuit board facing away from the switch structure.
10. The anti-collision device according to claim 9, characterized in that: A connecting structure is provided on a portion of the protective shell covering a side of the circuit board facing away from the switch structure, and the connecting structure is used for being mounted on the movable device.