Quick-connect explosion-proof switch

Abstract

This invention relates to the field of electrical switch technology, and provides a quick-connect explosion-proof switch, which includes a detachably connected upper cover and a wiring base, and a switch mechanism installed inside the upper cover and wiring base. The switch mechanism includes a knob mounted on the upper cover, a transmission mechanism fixedly connected to the bottom of the knob, and a three-phase connection mechanism rotatably connected to the transmission mechanism. When the irregularly shaped recess is pressed down, the contact rod enters the left and right contact rod clamps, connecting the cable in the cable clamp sleeve. This invention employs a quick-connect wiring device and a cleverly designed pressing mechanism, allowing cable connection to be switched on or off simply by rotating the knob. The operation is simple, time-saving, and labor-saving, avoiding potential safety hazards and making it perfectly suitable for use in explosion-proof environments of all levels.

Description

Technical Field

[0001] This invention relates to the field of electrical wiring technology, and more specifically to a quick-connect explosion-proof switch. Background Technology

[0002] When carrying out construction or maintenance work in the petrochemical production area, it is necessary to use electric equipment or tools, which requires the connection of temporary power cables. Since the production area is generally an explosion-proof area, the requirements for temporary distribution boxes are relatively high, especially at the intermediate joints, where there are many deficiencies in the cable wiring.

[0003] In existing methods, most involve crimping cable lugs or directly connecting the cable and then wrapping it with insulating tape. This method not only requires highly skilled workers but is also time-consuming and inefficient. More seriously, insufficient connection or inadequate insulation can cause safety hazards and bring many inconveniences to power outage and restoration operations. Summary of the Invention

[0004] To address the problems existing in the background art, the present invention provides a quick-connect explosion-proof switch, which includes a detachably connected upper cover and a wiring base, and a switch mechanism installed inside the upper cover and the wiring base, wherein:

[0005] The switching mechanism includes a knob mounted on the top cover, a transmission mechanism fixedly connected to the bottom of the knob, and a three-phase connection mechanism rotatably connected to the transmission mechanism;

[0006] The transmission mechanism includes a rotating shaft and a shaped recess mounted on the rotating shaft. The shaped recess has several grooves with inclined surfaces.

[0007] The three-phase connection mechanism includes a base plate, an irregular protrusion mounted on the upper part of the base plate, and a contact rod mounted on the lower part of the base plate; the base plate of the three-phase connection mechanism is connected to the bottom of the base through a sleeve; the irregular protrusion matches the shape of the groove of the irregular concave platform and is connected in the groove; during the rotation of the irregular concave platform, the irregular protrusion gradually separates from the groove along the inclined surface of the groove, pressing the irregular concave platform down.

[0008] The wiring base has cable inlet and cable outlet holes on the left and right sides, and cable fastening nuts for fastening the cables are provided at the cable inlet and cable outlet holes.

[0009] The wiring base is equipped with a clamping sleeve base, on which cable clamping sleeves are installed on the left and right. The ends of the cable clamping sleeves are respectively equipped with claw-shaped cable clamps and contact rod clamps. The cable enters the wiring base from the outside through the cable inlet hole and the cable outlet hole, and is connected to the claw-shaped cable clamps on the left and right respectively.

[0010] When the irregular concave platform is pressed down, the contact rod enters the contact rod clamps set on the left and right, and conducts the cable in the cable clamping sleeve.

[0011] Furthermore, the cross-section of the groove in the irregular concave platform is a right-angled trapezoid.

[0012] Furthermore, the cable clamp sleeve is provided in three sets, all of which are installed on the clamp sleeve base.

[0013] Furthermore, an arc-shielding baffle is installed on the clamping sleeve base to separate each group of cable clamping sleeves and prevent arc short circuits when the line is switched on or off.

[0014] Furthermore, a spring is installed in the sleeve. When the irregular protrusion gradually leaves the groove along the inclined surface of the groove, it presses down the irregular concave platform and compresses the spring at the same time. When the irregular protrusion gradually enters the groove along the inclined surface of the groove, the irregular concave platform rises under the action of the spring, the contact rod disengages from the contact rod clamp, and the cable in the cable clamp sleeve is disconnected.

[0015] Furthermore, the rotating shaft of the transmission mechanism is a hollow cylinder, and the bottom of the knob is a cylinder. The cylinder at the bottom of the knob passes through the upper cover and is inserted into the hollow cylindrical rotating shaft to achieve the connection between the knob and the transmission mechanism.

[0016] Furthermore, both the contact rod and the contact rod jacket are made of copper, a highly conductive material.

[0017] Furthermore, a cable ejection spring is provided between the contact rod clamp and the claw-shaped cable clamp.

[0018] In a preferred embodiment, the claw-shaped cable clamp is provided with a plurality of claws, the middle of which protrudes inward and can clamp the cable when the cable head is pushed into its interior.

[0019] In the preferred embodiment, the upper end of the contact rod sleeve is open for the contact rod to slide in.

[0020] The beneficial effects achieved by this invention are as follows:

[0021] The quick-connection explosion-proof switch of the present invention adopts a quick-connection device and has a cleverly designed pressing mechanism. The cable connection can be turned on or off by rotating the knob. The operation process is simple, time-saving and labor-saving, and can avoid safety hazards and other problems. It is fully suitable for use in explosion-proof places of all levels. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 yes Figure 1 A schematic diagram of the exploded structure;

[0024] Figure 3This is a schematic diagram of the cable clamp sleeve.

[0025] Figure 4 yes Figure 3 A sectional view.

[0026] Numbering on the map:

[0027] 1. Switching mechanism; 11. Knob; 12. Transmission mechanism; 121. Irregularly shaped recess; 13. Three-phase connection mechanism; 131. Irregularly shaped protrusion; 132. Contact rod; 133. Sleeve; 134. Spring; 2. Top cover; 3. Terminal base; 31. Cable clamp sleeve; 311. Contact rod clamp sleeve; 312. Cable ejection spring; 313. Claw-shaped cable clamp sleeve; 32. Cable fastening nut; 33. Clamp sleeve base; 4. Cable. Detailed Implementation

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. The present invention is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Reference Figures 1-4 The quick-connection explosion-proof switch of the present invention includes a detachably connected upper cover 2 and a wiring base 3, and a switch mechanism 1 installed inside the upper cover 2 and the wiring base 3. The switch mechanism 1 includes a knob 11 installed on the upper cover 2, a transmission mechanism 12 fixedly connected to the bottom of the knob 11, and a three-phase connection mechanism 13 rotatably connected to the transmission mechanism 12.

[0030] The transmission mechanism 12 includes a rotating shaft and an irregularly shaped recess 121 mounted on the rotating shaft. The irregularly shaped recess 121 has several grooves with inclined surfaces. The cross-section of the grooves of the irregularly shaped recess 121 is preferably a right trapezoid.

[0031] The three-phase connection mechanism 13 includes a base plate, an irregularly shaped protrusion 131 mounted on the upper part of the base plate, and a contact rod 132 mounted on the lower part of the base plate. The base plate of the three-phase connection mechanism 13 is connected to the bottom of the base through a sleeve 133. The irregularly shaped protrusion 131 matches the shape of the groove of the irregularly shaped recess 121 and is connected in the groove. During the rotation of the irregularly shaped recess 121, the irregularly shaped protrusion 131 gradually disengages from the groove along the inclined surface of the groove, pressing the irregularly shaped recess 121 down. The wiring base 3 has cable 4 inlet holes and cable 4 outlet holes on its left and right sides. A cable fastening nut 32 for securing the cable 4 is provided at the cable 4 outlet; a clamping sleeve base 33 is installed inside the terminal base 3, and cable clamping sleeves 31 are installed on the left and right sides of the clamping sleeve base 33. Claw-shaped cable clamps 313 and contact rod clamps 311 are respectively installed at the ends of the cable clamping sleeves 31. The cable 4 enters the terminal base 3 from the outside through the cable 4 inlet hole and the cable 4 outlet hole, and is respectively connected to the claw-shaped cable clamps 313 on the left and right sides; there are three sets of cable clamping sleeves 31, all of which are installed on the clamping sleeve base 33.

[0032] When the irregular concave platform 121 is pressed down, the contact rod 132 enters the contact rod sleeves 311 set on the left and right, and conducts the cable 4 in the cable clamping sleeve 31.

[0033] An arc-shielding baffle is installed on the clamping sleeve base 33 to separate each group of cable clamping sleeves 31 and prevent arc short circuits when the line is switched on or off.

[0034] A spring 134 is installed in the sleeve 133. When the irregular protrusion 131 gradually leaves the groove along the inclined surface of the groove, it presses down the irregular concave platform 121 and compresses the spring 134 at the same time. When the irregular protrusion 131 gradually enters the groove along the inclined surface of the groove, the irregular concave platform 121 rises in position under the action of the spring 134, the contact rod 132 disengages from the contact rod clamp 311, and the cable 4 in the cable clamp sleeve 31 is disconnected.

[0035] The shaft of the transmission mechanism 12 is a hollow cylinder, and the bottom of the knob 11 is a cylinder. The cylinder at the bottom of the knob 11 passes through the upper cover 2 and is inserted into the hollow cylindrical shaft, thereby connecting the knob 11 with the transmission mechanism 12.

[0036] The contact rod 132 and the contact rod sleeve 311 are both made of copper high-conductivity material.

[0037] A cable ejection spring 312 is provided between the contact rod sleeve 311 and the claw-shaped cable sleeve 313. The claw-shaped cable sleeve 313 is provided with several claws, the middle of which protrudes inward, so that the cable 4 can be clamped when the cable 4 ends are pushed into its interior.

[0038] In this invention, the main function of the switch mechanism 1 is to adjust the knob 11 to change the mechanism's external rotational motion to an internal up-and-down motion, thereby achieving the circuit switching function. The switch mechanism 1 is mounted on the upper cover 2. The knob 11 and the transmission mechanism 12 are made of insulating material.

[0039] The knob 11 is located on the upper part of this explosion-proof switch. The transmission mechanism 12 is connected to the central shaft below it. Below it is a shaped recess 121, which matches the shaped protrusion 131. When the knob 11 is rotated, it drives the transmission mechanism 12 to rotate.

[0040] The irregular concave platform 121 and the irregular protrusion 131 are misaligned with each other, and the three-phase connection mechanism 13 moves up and down under the action of the spring 134.

[0041] The main function of the three-phase connection mechanism 13 is to achieve circuit switching by moving up and down in conjunction with the cable clamp sleeve 31. It consists of a shaped protrusion 131, a contact rod 132, a sleeve 133, and a spring 134. The contact rod 132 is made of high-conductivity copper, while the shaped protrusion 131 and sleeve 133 are made of insulating material. The upper cover 2 is tightly connected to the terminal base 3 by fastening screws, and a sealing strip is installed at the connection point to achieve explosion-proof, waterproof, and dustproof functions. The terminal base 3 is an important part of the entire explosion-proof switch, serving to connect the cable 4 and cooperate with the switch mechanism 1 to achieve circuit switching. It consists of three parts: the cable clamp sleeve 31, the cable fastening nut 32, and the clamp sleeve base 33.

[0042] The main function of the cable clamp sleeve 31 is to quickly clamp the cable 4, and it works in conjunction with the three-phase connection mechanism 13 to switch the circuit on and off. The contact rod clamp sleeve 311 is made of high-conductivity copper material, sealed in the middle, with one end tubular and the other end open. The opening extends outward to facilitate the sliding of the contact rod 132. It is covered with a high-elasticity clip to tightly clamp the contact rod 132. The tubular part is fitted with a cable ejection spring 312 and a claw-shaped cable clamp sleeve 313. The rear end of the cable ejection spring 312 rests on the sealing baffle, and the front end rests on the rear of the claw-shaped cable clamp sleeve 313. The claws of the claw-shaped cable clamp sleeve 313 protrude inward in the middle, which can clamp the cable 4 when the cable 4 end is pushed into its interior. The function of the cable ejection spring 312 is to allow the claw-shaped cable clamp sleeve 313 to pop out into the open shape when the cable 4 is pulled out.

[0043] The cable fastening nut 32 is used to fasten the cable 4 so that the cable 4 ends are not loose. The clamping sleeve base 33 is used to position the three-phase claw-shaped cable clamps 313 respectively. There is an arc-shielding baffle between each phase to prevent arc short circuit when the line is switched on or off.

[0044] In use, first open the top cover 2, unscrew the cable fastening nut 32 and insert the cable 4 end, then strip the three-phase cores of the cable 4, and insert the stripped three-phase cores of the cable 4 into the cable clamp sleeve 31 respectively and tighten them. Similarly, connect the other end of the switch to the cable 4 in the same way, then tighten the cable fastening nut 32 to secure the cable 4 firmly. Then close the top cover 2 and secure it with the fastening bolts. When power is needed, rotate the knob 11 counterclockwise, and the irregular protrusion 131 gradually moves along the inclined surface of the groove. As the irregularly shaped recess 121 is pressed down, the spring 134 inside the sleeve 133 is compressed. The contact rod 132 of the three-phase connection mechanism 13 is pressed down and connected to the front and rear cable clamp sleeves 31 to achieve the function of circuit conduction. The knob 11 is rotated clockwise and counterclockwise, and the irregularly shaped protrusion 131 gradually enters the groove along the slope of the groove. The irregularly shaped recess 121 rises under the action of the spring 134, and the contact rod 132 is disengaged from the contact rod clamp sleeve 311, and the cable 4 in the cable clamp sleeve 31 is disconnected.

[0045] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0046] Secondly: The accompanying drawings of the embodiments disclosed in this invention only involve the structures involved in the embodiments disclosed in this invention. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this invention can be combined with each other.

[0047] In conclusion, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A quick-connect explosion-proof switch, characterized in that, It includes a detachably connected upper cover (2) and a wiring base (3), and a switching mechanism (1) installed inside the upper cover (2) and the wiring base (3), wherein: The switching mechanism (1) includes a knob (11) mounted on the top cover (2), a transmission mechanism (12) fixedly connected to the bottom of the knob (11), and a three-phase connection mechanism (13) rotatably connected to the transmission mechanism (12); The transmission mechanism (12) includes a rotating shaft and a shaped recess (121) mounted on the rotating shaft. The shaped recess (121) has several grooves with inclined surfaces. The three-phase connection mechanism (13) includes a base plate and an irregular protrusion (131) installed on the upper part of the base plate and a contact rod (132) installed on the lower part of the base plate; the base plate of the three-phase connection mechanism (13) is connected to the bottom of the base (3) through a sleeve (133); the irregular protrusion (131) matches the shape of the groove of the irregular concave platform (121) and is connected in the groove; during the rotation of the irregular concave platform (121), the irregular protrusion (131) gradually separates from the groove along the inclined surface of the groove, pressing down the irregular concave platform (121); a spring (134) is installed in the sleeve (133); The wiring base (3) has cable (4) inlet holes and cable (4) outlet holes on the left and right sides. Cable fastening nuts (32) for fastening the cable (4) are provided at the cable (4) inlet holes and cable (4) outlet holes. The wiring base (3) is equipped with a clamping sleeve base (33), and the clamping sleeve base (33) is equipped with cable clamping sleeves (31) arranged on the left and right. The ends of the cable clamping sleeves (31) are respectively equipped with claw-shaped cable clamps (313) and contact rod clamps (311). The cable (4) enters the wiring base (3) from the outside through the cable (4) inlet hole and the cable (4) outlet hole, and is respectively connected to the claw-shaped cable clamps (313) arranged on the left and right. When the irregular concave platform (121) is pressed down, the contact rod (132) enters the contact rod sleeves (311) set on the left and right, and conducts the cable in the cable clamp sleeve (31).

2. The quick-connect explosion-proof switch according to claim 1, characterized in that: The cross-section of the groove in the irregular concave platform (121) is a right trapezoid.

3. The quick-connect explosion-proof switch according to claim 1, characterized in that: The cable clamp sleeve (31) is provided in three sets, all of which are installed on the clamp sleeve base (33).

4. The quick-connect explosion-proof switch according to claim 3, characterized in that: An arc-shielding baffle is installed on the clamping sleeve base (33) to separate each group of cable clamping sleeves (31) and prevent arc short circuits when the line is switched on or off.

5. The quick-connect explosion-proof switch according to claim 1, characterized in that: As the irregular protrusion (131) gradually detaches from the groove along the inclined surface of the groove, it presses down the irregular recess (121) and compresses the spring (134); as the irregular protrusion (131) gradually enters the groove along the inclined surface of the groove, the irregular recess (121) rises in position under the action of the spring (134), the contact rod (132) disengages from the contact rod sleeve (311), and the cable in the cable clamp sleeve (31) is disconnected.

6. The quick-connect explosion-proof switch according to claim 1, characterized in that: The shaft of the transmission mechanism (12) is a hollow cylinder, and the bottom of the knob (11) is a cylinder. The cylinder at the bottom of the knob (11) passes through the upper cover (2) and is inserted into the hollow cylindrical shaft to realize the connection between the knob and the transmission mechanism.

7. The quick-connect explosion-proof switch according to claim 1, characterized in that: The contact rod (132) and the contact rod sleeve (311) are both made of copper high-conductivity material.

8. The quick-connect explosion-proof switch according to claim 1, characterized in that: A cable ejection spring (312) is provided between the contact rod sleeve (311) and the claw-shaped cable sleeve (313).

9. The quick-connect explosion-proof switch according to claim 1, characterized in that: The claw-shaped cable clamp (313) is provided with several claws, the middle of which protrudes inward and can clamp the cable when the cable head is pushed into its interior.

10. The quick-connect explosion-proof switch according to claim 1, characterized in that: The upper end of the contact rod sleeve (311) is open for the contact rod (132) to slide in.

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