Photoelectric switch with buffering function

Abstract

The invention belongs to the technical field of electro-optical switches, and particularly discloses a photoelectric switch with a buffer function, which comprises a protective cover, a base, a clamping mechanism and a buffer damping mechanism, the front surface of the protective cover is provided with an access door, the side edge of the protective cover is provided with a chute, and the base, the clamping mechanism and the buffer damping mechanism are all arranged in the protective cover. A photoelectric switch body is arranged at the position, close to the middle, of the upper portion of the base, limiting plates are symmetrically arranged on the side edges of the photoelectric switch body, fixing insertion holes are formed in the side edges of the photoelectric switch body, and the limiting plates are fixed to the base. The clamping mechanism comprises a first sliding block, a sliding plate, a telescopic rod, a tension spring, a top plate and an inserting rod; the buffer vibration reduction mechanism comprises a middle block, a sliding rod, a second sliding block, a vibration reduction spring, a connecting arm and a damper, the photoelectric switch body is fixed through the clamping mechanism, the vibration reduction effect can be effectively achieved through the buffer vibration reduction mechanism, and the vibration amplitude can be greatly reduced through the vibration reduction spring and the damper.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of photoelectric switch, in particular to a photoelectric switch with buffering function. BACKGROUND

[0002] Photoelectric switch is the abbreviation of photoelectric proximity switch, which detects the presence or absence of an object by using the blocking or reflection of the light beam by the object to turn on the circuit by the synchronous circuit. The object is not limited to metal, and all objects that can reflect light or block light can be detected. The photoelectric switch converts the input current into a light signal on the emitter, and the receiver detects the target object according to the strength or presence or absence of the received light.

[0003] Since the output circuit and the input circuit of the photoelectric switch are electrically isolated, i.e. electrically insulated, it can be applied in many occasions. The new generation of photoelectric switch devices manufactured by using integrated circuit technology and SMT surface mounting process have intelligent functions such as time delay, time expansion, external synchronization, anti-interference, high reliability, stable working area, self-diagnosis and the like.

[0004] The existing photoelectric switch is mostly exposed to the outside when in use, which leads to the photoelectric switch being easily damaged due to external bumps during use. In addition, the existing photoelectric switch lacks a damping mechanism, which leads to the photoelectric switch being easily damaged due to mechanical vibration generated by the mechanical equipment itself during normal operation, so that the use safety of the photoelectric switch is difficult to guarantee. SUMMARY

[0005] The present application aims to provide a photoelectric switch with buffering function to solve the problems raised in the background.

[0006] In order to achieve the above object, the present application provides the following technical scheme: A photoelectric switch with buffering function, comprising a protective cover, a base, a clamping mechanism and a buffering damping mechanism, the protective cover is provided with an access door on the front side, a sliding groove is formed on the side edge of the protective cover, the base, the clamping mechanism and the buffering damping mechanism are all arranged inside the protective cover, the base is located at the position close to the bottom of the protective cover, the clamping mechanism is located at the position close to the sliding groove, the buffering damping mechanism is located below the base, a photoelectric switch body is arranged at the position close to the middle above the base, limiting plates are symmetrically arranged on the side edges of the photoelectric switch body, and fixed insertion holes are formed on the side edges of the photoelectric switch body, the limiting plates are fixed on the base; the clamping mechanism comprises a first sliding block, a sliding plate, an extension rod, a tension spring, a top plate and a plug rod, the first sliding block is slidably connected in the sliding groove, the sliding plate is fixed on the first sliding block, one end of the extension rod is fixed on the sliding plate, the top plate is fixed on the other end of the extension rod, the plug rod corresponds to the fixed insertion hole, and the plug rod passes through the limiting plate and is inserted into the fixed insertion hole to fix the photoelectric switch body; the buffering damping mechanism comprises a middle block, a sliding rod, a second sliding block, a damping spring, a connecting arm and a damper, the middle block is fixed on the bottom of the protective cover, the sliding rods are symmetrically arranged on the side edges of the middle block, the sliding rod penetrates through the second sliding block, the damping spring is sleeved outside the sliding rod, and the damping spring is located between the second sliding block and the middle block, the connecting arm is arranged above the second sliding block, and the connecting arm is hingedly connected to the base and the second sliding block at both ends, the damper is fixed on the middle block, and the end of the damper is fixed on the base; in use, the photoelectric switch body is fixed by the clamping mechanism, and the buffering damping mechanism can effectively play a damping effect, the damping spring and the damper can greatly reduce the vibration amplitude, and in the damping process, the first sliding block is arranged to slide in the sliding groove, so as to avoid affecting the normal use of the clamping mechanism.

[0007] Preferably, a pressing mechanism is arranged on the top cover, the pressing mechanism comprises a screw hole, a screw rod and a pressing plate, the screw hole is formed at the position close to the middle of the top cover, the screw rod is threadedly connected in the screw hole, and the pressing plate is rotatably connected at the end of the screw rod; by rotating the screw rod, the screw rod drives the pressing plate to move downward, the photoelectric switch body can be pressed by the pressing plate, and the photoelectric switch body is displaced downward; the pressing mechanism can be used for pressing the photoelectric switch body, and can also be used for adjusting the height of the photoelectric switch body.

[0008] Preferably, a knob is arranged at the top end of the screw rod, and a positioning rod is fixed on the pressing plate and penetrates through the top cover; the knob can be used for rotating the screw rod, and the positioning rod can be used for improving the stability of the pressing plate when moving.

[0009] Preferably, a rubber pad is arranged below the pressing plate; the rubber pad is mainly arranged to prevent hard contact between the pressing plate and the photoelectric switch body, so as to prevent damage to the photoelectric switch body.

[0010] Preferably, the bottom of the access door is hinged with the protective cover, and the side edge of the access door near the top is provided with a connecting block, the side edge of the protective cover near the top is provided with a locking block corresponding to the connecting block, the connecting block is fixed with the locking block through bolts, and the access door and the protective cover can be removed by unscrewing the bolts.

[0011] Preferably, a through groove is formed in the middle of the access door, and the through groove is mainly arranged to facilitate normal use of the photoelectric switch body.

[0012] Preferably, a plurality of fixing blocks are uniformly arranged on the bottom of the protective cover, and fixing holes are arranged on the fixing blocks, and the fixing blocks are mainly arranged to fix the protective cover on the mechanical equipment.

[0013] Preferably, a positioning block is fixed to the side of the first sliding block away from the sliding plate, and the positioning block is mainly arranged to limit the first sliding block and prevent the first sliding block from sliding out of the sliding groove.

[0014] Compared with the prior art, the present application has the following advantages:

[0015] The present application fixes the photoelectric switch body through the clamping mechanism, facilitates disassembly and assembly of the photoelectric switch body, and effectively plays a main damping role through the arrangement of the buffer damping mechanism. The damping spring and the damper can greatly reduce the vibration amplitude. The pressing mechanism can press the photoelectric switch body, effectively improve the practicability of the device, and has good damping effect and prevent the photoelectric switch body from being damaged due to vibration. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 It is a three-dimensional structure schematic diagram of the present application;

[0017] Fig. 2 It is an internal structure schematic diagram of the present application;

[0018] Fig. 3 It is an access door opening structure schematic diagram of the present application.

[0019] In the figure: 1, protective cover; 101, top cover; 102, sliding groove; 103, fixing block; 104, locking block; 2, access door; 201, through groove; 202, connecting block; 3, photoelectric switch body; 301, fixed jack; 4, clamping mechanism; 401, first sliding block; 4011, positioning block; 402, sliding plate; 403, telescopic rod; 404, tension spring; 405, top plate; 406, plug rod; 5, base; 6, limiting plate; 7, pressing mechanism; 701, screw hole; 702, screw rod; 7021, knob; 703, pressing plate; 7031, positioning rod; 8, buffer damping mechanism; 801, middle block; 802, sliding rod; 803, second sliding block; 804, damping spring; 805, connecting arm; 806, damper. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those of ordinary skill in the art without creative effort should fall into the protection scope of the present application.

[0021] In the description of the present application, it should be noted that the orientation or positional relationship indicated by the terms "vertical", "upper", "lower", "horizontal" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0022] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "arrange", "mount", "connect", "connect" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0023] Please refer to Figs. 1-3This invention provides a technical solution: a photoelectric switch with a buffer function, comprising a protective cover 1, a base 5, a clamping mechanism 4, and a buffering and vibration damping mechanism 8. The protective cover 1 has an inspection door 2 on its front and a sliding groove 102 on its side. The base 5, clamping mechanism 4, and buffering and vibration damping mechanism 8 are all disposed inside the protective cover 1. The base 5 is located near the bottom of the protective cover 1, the clamping mechanism 4 is located near the sliding groove 102, and the buffering and vibration damping mechanism 8 is located below the base 5. The photoelectric switch body 3 is located above the base 5 near the center. The main body 3 has symmetrically arranged limiting plates 6 on its sides, and the photoelectric switch main body 3 has a fixing insertion hole 301 on its side. The limiting plates 6 are fixed to the base 5. The clamping mechanism 4 includes a first slider 401, a sliding plate 402, a telescopic rod 403, a tension spring 404, a top plate 405, and a plug rod 406. The first slider 401 is slidably connected in the slide groove 102. The sliding plate 402 is fixed on the first slider 401. One end of the telescopic rod 403 is fixed on the sliding plate 402, and the top plate 405 is fixed on the other end of the telescopic rod 403. The plug rod 406 corresponds to the fixing insertion hole 301. Furthermore, the insertion rod 406 passes through the limiting plate 6 and is inserted into the fixed insertion hole 301 to fix the photoelectric switch body 3; the buffer and vibration damping mechanism 8 includes an intermediate block 801, a sliding rod 802, a second slider 803, a vibration damping spring 804, a connecting arm 805, and a damper 806. The intermediate block 801 is fixed to the bottom of the protective cover 1. The sliding rod 802 is symmetrically arranged on the side of the intermediate block 801. The sliding rod 802 passes through the second slider 803. The vibration damping spring 804 is sleeved on the outside of the sliding rod 802 and is located between the second slider 803 and the intermediate block 801. The connecting arm 805... 05 is positioned above the second slider 803, and the two ends of the connecting arm 805 are respectively hinged to the base 5 and the second slider 803. The damper 806 is fixed on the middle block 801, and the end of the damper 806 is fixed on the base 5. In use, the photoelectric switch body 3 is fixed by the clamping mechanism 4, and the buffer damping mechanism 8 can effectively reduce vibration. The damping spring 804 and the damper 806 can greatly reduce the vibration amplitude. During the vibration reduction process, the first slider 401 is set to slide in the slide groove 102 to avoid affecting the normal use of the clamping mechanism 4.

[0024] Furthermore, the top cover 101 is provided with a pressing mechanism 7, which includes a screw hole 701, a screw 702, and a pressure plate 703. The screw hole 701 is located near the middle of the top cover 101. The screw 702 is threaded into the screw hole 701. The pressure plate 703 is rotatably connected to the end of the screw 702. By rotating the screw 702, the screw 702 can drive the pressure plate 703 to move downward. The pressure plate 703 can be used to press the photoelectric switch body 3, causing the photoelectric switch body 3 to move downward. It can not only be used to press the photoelectric switch body 3, but also to adjust the height of the photoelectric switch body 3 to a shorter length.

[0025] Furthermore, a knob 7021 is provided at the top of the screw 702, and a positioning rod 7031 is fixed on the pressure plate 703. The positioning rod 7031 passes through the top cover 101. The knob 7021 allows the operator to easily rotate the screw 702, and the positioning rod 7031 is used to improve the stability of the pressure plate 703 when it moves.

[0026] Furthermore, a rubber pad is provided below the pressure plate 703. The rubber pad is mainly to prevent hard contact between the pressure plate 703 and the photoelectric switch body 3, which could damage the photoelectric switch body 3.

[0027] Furthermore, the bottom of the inspection door 2 is hinged to the protective cover 1, and a connecting block 202 is provided on the side of the inspection door 2 near the top. A locking block 104 corresponding to the connecting block 202 is provided on the side of the protective cover 1 near the top. The connecting block 202 is fixed to the locking block 104 by bolts. The inspection door 2 can be opened by unscrewing the bolts fixing the connecting block 202 and the locking block 104.

[0028] Furthermore, the inspection door 2 has a through groove 201 in the middle, which is mainly to facilitate the normal use of the photoelectric switch body 3.

[0029] Furthermore, a plurality of fixing blocks 103 are evenly arranged at the bottom of the protective cover 1, and fixing holes are provided on the fixing blocks 103. The fixing blocks 103 are mainly used to fix the protective cover 1 to the mechanical equipment.

[0030] Furthermore, a positioning block 4011 is fixed on the side of the first slider 401 away from the sliding plate 402. The positioning block 4011 is mainly used to restrict the first slider 401 and prevent the first slider 401 from sliding out of the slide groove 102.

[0031] In summary, when using this invention, by opening the inspection door 2 and then pushing the top plate 405 to the side, the top plate 405 compresses the tension spring 404 and the damper 806, causing the tension spring 404 and the damper 806 to contract. This then secures the photoelectric switch body 3 inside the limiting plate 6. Releasing the top plate 405 causes the tension spring 404 to rebound, pushing the top plate 405 back. This causes the top plate 405 to drive the insertion rod 406 into the fixing hole 301, thus fixing the photoelectric switch body 3. It can then be used normally. During use, the generated mechanical vibration will cause the photoelectric switch body 3 and the base 5 to vibrate. This causes the base 5 to push the second slider 803 to slide on the slide rod 802 via the connecting arm 805. The second slider 803 compresses the damping spring 804, and simultaneously the base 5 compresses the damper 806. The damping spring 804 and the damper 806 act as a buffer and damper, greatly reducing the vibration amplitude. Furthermore, the device can also rotate the knob 7021, causing the knob 7021 to drive the screw 702 to rotate, causing the screw 702 to drive the top plate 405 to move downward, causing the top plate 405 to press the photoelectric switch body 3, thus pressing the photoelectric switch body 3 tightly.

[0032] It is worth noting that the entire device is controlled by a master control button. Since the device matched with the control button is a common device and belongs to existing mature technology, its electrical connection relationship and specific circuit structure will not be described in detail here.

[0033] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A photoelectric switch with a buffer function, characterized in that: The device includes a protective cover (1), a base (5), a clamping mechanism (4), and a buffer and vibration damping mechanism (8). The protective cover (1) has an inspection door (2) on its front and a sliding groove (102) on its side. The base (5), clamping mechanism (4), and buffer and vibration damping mechanism (8) are all located inside the protective cover (1). The base (5) is located near the bottom of the protective cover (1), the clamping mechanism (4) is located near the sliding groove (102), and the buffer and vibration damping mechanism (8) is located below the base (5). A photoelectric switch body (3) is located near the middle of the base (5). A limiting plate (6) is symmetrically arranged on the side of the photoelectric switch body (3), and a fixing hole (301) is opened on the side of the photoelectric switch body (3). The limiting plate (6) is fixed on the base (5). The clamping mechanism (4) includes a first slider (401), a sliding plate (402), a telescopic rod (403), a tension spring (404), a top plate (405), and a plug rod (406). The first slider (401) is slidably connected in the slide groove (102). The sliding plate (402) is fixed on the first slider (401). One end of the telescopic rod (403) is fixed on the sliding plate (402). The top plate (405) is fixed on the other end of the telescopic rod (403). The plug rod (406) corresponds to the fixed insertion hole (301). The plug rod (406) passes through the limiting plate (6) and is inserted into the fixed insertion hole (301) to fix the photoelectric switch body (3). The buffer and vibration damping mechanism (8) includes an intermediate block (801), a slide rod (802), a second slider (803), a damping spring (804), a connecting arm (805), and a damper (806). The intermediate block (801) is fixed to the bottom of the protective cover (1). The slide rod (802) is symmetrically arranged on the side of the intermediate block (801). The slide rod (802) passes through the second slider (803). The damping spring (804) is sleeved on the outside of the slide rod (802) and is located between the second slider (803) and the intermediate block (801). The connecting arm (805) is arranged above the second slider (803) and its two ends are respectively hinged to the base (5) and the second slider (803). The damper (806) is fixed on the intermediate block (801) and its end is fixed on the base (5).

2. A photoelectric switch with a buffer function according to claim 1, characterized in that: The top cover (101) is provided with a pressing mechanism (7), which includes a screw hole (701), a screw (702) and a pressure plate (703). The screw hole (701) is located near the middle of the top cover (101), the screw (702) is threaded into the screw hole (701), and the pressure plate (703) is rotatably connected to the end of the screw (702).

3. A photoelectric switch with a buffer function according to claim 1, characterized in that: A knob (7021) is provided at the top of the screw (702), and a positioning rod (7031) is fixed on the pressure plate (703). The positioning rod (7031) passes through the top cover (101).

4. A photoelectric switch with a buffer function according to claim 1, characterized in that: A rubber pad is provided below the pressure plate (703).

5. A photoelectric switch with a buffer function according to claim 1, characterized in that: The bottom of the inspection door (2) is hinged to the protective cover (1), and a connecting block (202) is provided on the side of the inspection door (2) near the top. A locking block (104) corresponding to the connecting block (202) is provided on the side of the protective cover (1) near the top. The connecting block (202) is fixed to the locking block (104) by bolts.

6. A photoelectric switch with a buffer function according to claim 1, characterized in that: The inspection door (2) has a through groove (201) in the middle.

7. A photoelectric switch with a buffer function according to claim 1, characterized in that: The bottom of the protective cover (1) is provided with a plurality of fixing blocks (103), and fixing holes are provided on the fixing blocks (103).

8. A photoelectric switch with a buffer function according to claim 1, characterized in that: A positioning block (4011) is fixed on the side of the first slider (401) away from the sliding plate (402).

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