Fuse pedestal

Abstract

The invention relates to a fuse base which comprises an installation cover, an installation frame connected in the installation cover and contact assemblies, wiring ports are formed in the two ends of the installation cover, the number of the contact assemblies is two, the contact assemblies correspond to the wiring ports in a one-to-one mode, the installation frame is used for being connected with a fusible core, and an installation port is formed in one end, in the width direction, of the installation cover. The mounting port is used for the mounting rack and the contact assembly to pass through. And the installation cover is integrally arranged, so that the time consumed in the installation process is shortened, the control problem in the installation process is reduced, and the product quality is improved.

Description

Technical Field

[0001] The present application relates to the field of circuit protection, and in particular to a fuse base. Background Art

[0002] The fuse base is a carrier for placing the fuse.

[0003] A Chinese patent with authorization announcement number CN210040113U discloses a fuse base, including a front cover, a fixing frame, a rear cover, a slide plate, an elastic buckle plate, an extrusion fixing component, a first slide groove, an elastic buckle tooth, a positioning box, a wire hole, a telescopic spring and a slider, wherein the front cover is arranged on the front side of the fixing frame, and the rear cover is arranged on the rear side of the fixing frame, and the front cover and the rear cover are fixedly installed by a first bolt, and a first slide groove is respectively provided at one end of the bottom side of the front cover and the rear cover. In the utility model, the fuse base is composed of the front cover, the fixing frame, the rear cover and the slide plate, and can be assembled simply and quickly. When installing and fixing, the slide groove and the slide plate are buckled to realize quick installation and fixing, thereby greatly improving the installation efficiency; extrusion fixing components are respectively arranged at both ends of the rear cover, which can realize extrusion and fixing of the connecting wires at both ends, thereby ensuring that the wires will not fall off after being connected, thereby ensuring the stability of the motor transmission.

[0004] Regarding the above-mentioned related technologies, for the connection method between the front cover and the back cover, ultrasonic welding and riveting may cause product deformation or poor appearance, affecting the overall quality of the product. Therefore, how to avoid these process problems while ensuring convenient installation has become a technical problem that needs to be solved urgently. Summary of the invention

[0005] In order to improve product quality, the present application provides a fuse base.

[0006] A fuse base provided in this application adopts the following technical solution: A fuse base comprises a mounting cover, a mounting frame connected to the mounting cover, and a contact assembly. The mounting cover is provided with wiring ports at both ends along the length direction thereof. Two contact assemblies are provided, and the contact assemblies correspond to the wiring ports one by one. The contact assembly is used to connect to the electric wire, and the mounting frame is used to connect to the fuse core. The two contact assemblies are respectively used to connect to the two ends of the fuse core. The mounting cover is provided with a mounting port at one end along the width direction thereof, and the mounting port is used for the mounting frame and the contact assembly to pass through.

[0007] By adopting the above technical solution, when installing the fuse base, the contact assembly enters the installation cover through the installation opening and is installed in the installation cover. After the contact assembly is installed, the fuse core is installed in the installation frame, and the installation frame enters the installation cover through the installation opening and is installed in the installation cover, thereby completing the installation of the fuse base. The integrated setting of the installation cover reduces the time consumed in the installation process and reduces the management and control problems in the installation process, thereby improving product quality.

[0008] Optionally, the mounting cover is connected to a fixed plate and a sliding block along its width direction and at one end away from the mounting opening, the sliding block and the fixed plate are spaced in sequence along the length direction of the mounting cover, the fixed plate is connected to a first clamping block near one end of the sliding block, the first clamping block and the outer wall of the mounting cover are separated by a first gap for the guide rail to be embedded, the sliding block is connected to a second clamping block near one end of the fixed plate, the second clamping block and the outer wall of the mounting cover are separated by a second gap for the guide rail to be embedded, the mounting cover is connected to a moving part, and the moving part is used to drive the sliding block to slide along the length direction of the mounting cover and is connected to the mounting cover.

[0009] By adopting the above technical solution, when the mounting cover is installed on the guide rail, the movable part drives the sliding block to move along the length direction of the mounting cover, so that the sliding block is away from the fixed plate, so that it is convenient for the mounting cover to approach the guide rail and for the guide rail to be embedded in the first gap. After the guide rail is embedded in the first gap, the movable part drives the sliding block to move along the length direction of the mounting cover, so that the sliding block and the second clamping block are close to the first clamping block, and then the guide rail is driven to be embedded in the second gap, so that the mounting cover is stably connected to the guide rail.

[0010] Optionally, the sliding block is provided with a mounting hole, the length direction of the mounting hole is consistent with the length direction of the mounting cover, the movable member is a spring, the length direction of the spring is consistent with the length direction of the mounting hole, one end of the spring is connected to the inner wall of the mounting hole, and the other end of the spring is in contact with the outer wall of the mounting cover, and the spring drives the sliding block to move and enables the second clamping block to engage with the guide rail.

[0011] By adopting the above technical solution, when the mounting cover is installed on the guide rail, the sliding block is moved along the length direction of the mounting cover, and the sliding block is driven away from the fixed plate, so that the spring is squeezed and deformed. When the mounting cover is close to the guide rail and the guide rail is embedded in the first gap, the operator releases the sliding block, the spring restores its shape and drives the sliding block to move along the length direction of the mounting cover, so that the second clamping block is close to the guide rail, and the guide rail is embedded in the second gap, so that the mounting cover is stably connected to the guide rail.

[0012] Optionally, the contact assembly includes an upper pressure plate, a lower pressure plate, and a clamping member, the upper pressure plate and the lower pressure plate are spaced apart in sequence along the width direction of the mounting cover, the upper pressure plate and the lower pressure plate are spaced apart to form a third gap for embedding the power line, the third gap is connected to the wiring port, the upper pressure plate and the lower pressure plate are both used to connect to the wires, the other end of the lower pressure plate is used to connect to the fuse, and the clamping member is used to drive the upper pressure plate to move along the width direction of the mounting cover and drive the upper pressure plate to press against the wires.

[0013] By adopting the above technical solution, when in use, one end of the wire passes through the wiring port and is embedded in the third gap, so that the wire is connected to the fuse through the lower pressure plate. When the wire is embedded in the third gap, the clamping member drives the upper pressure plate to move along the width direction of the mounting cover, and drives the upper pressure plate to press against the wire, and makes the wire press against the lower pressure plate, thereby making the wire stably connected in the third gap.

[0014] Optionally, the contact assembly also includes a mounting ring, the mounting ring opening faces the wiring port, the upper pressure plate and the lower pressure plate are both arranged in the mounting ring, the upper pressure plate is slidably connected in the mounting ring along the width direction of the mounting cover, the clamping member is a first bolt, the length direction of the first bolt is consistent with the width direction of the mounting cover, the first bolt passes through and is threadedly connected to one side of the mounting ring, and one end of the first bolt is in contact with the upper pressure plate.

[0015] By adopting the above technical solution, when the wire is embedded in the third gap, the first bolt is rotated so that the first bolt moves along the width direction of the mounting cover and approaches the lower pressure plate. When the first bolt moves along the width direction of the mounting cover, the first bolt pushes the upper pressure plate to move and makes the upper pressure plate and the wire press tightly, so that the wire is stably connected to the third gap.

[0016] Optionally, the lower pressure plate is connected to two clamps, which are respectively connected to both sides of the lower pressure plate along the thickness direction of the mounting cover, and a fourth gap is provided between the two clamps for the fuse to be embedded, and the clamps are used to contact the fuse, and the lower pressure plate is provided with a clamping member, which drives the clamps to press against the fuse.

[0017] By adopting the above technical solution, when in use, the clamping plate contacts the fuse core, thereby increasing the contact area between the lower pressure plate and the fuse core and improving the operating stability during use. In addition, a clamping piece is added, which drives the clamping plate to press against the fuse core, thereby improving the stability of the connection between the clamping plate and the fuse core.

[0018] Optionally, a baffle is provided on the side of the first bolt close to the mounting port, the baffle is detachably connected to the mounting cover, the baffle is provided with a through opening, the through opening is arranged toward the first bolt, the baffle is connected to a cylinder on the side away from the first bolt, and the cylinder is connected to the mounting cover through the through opening.

[0019] By adopting the above technical solution, after the contact assembly and the mounting frame are installed in the mounting cover, the baffle is installed on the mounting cover, and the baffle is added to avoid the operator from accidentally touching the contact assembly during use, thereby improving the safety of the use of the fuse mounting base, and a through hole is added to facilitate the operator to tighten the first bolt, and a cylinder is added to reduce the operator's error in touching the contact assembly without affecting the operator's use as much as possible.

[0020] Optionally, a connecting rod is connected to one side of the baffle plate close to the first bolt, and an insert block is connected to the end of the connecting rod away from the baffle plate. A socket is opened on the side wall of the mounting cover along one side of the thickness direction, and the insert block is embedded in the socket. The baffle plate and the mounting cover are clamped together through the insert block and the socket.

[0021] By adopting the above technical solution, when installing the baffle, the plug block is deformed after contacting the side wall of the installation cover, and drives the connecting rod to deform, so as to facilitate the baffle to be embedded in the installation opening. When the baffle is embedded in the installation opening, the plug block is close to the socket, the connecting rod restores its deformation, and drives the plug block to be embedded in the socket, so that the baffle and the installation cover are connected through the plug block and the socket, thereby making the disassembly and assembly of the baffle more convenient.

[0022] Optionally, a limiting plate is connected inside the mounting cover, and two limiting plates are provided. The two limiting plates are spaced apart along the length direction of the mounting cover, and the length direction of the limiting plates is consistent with the length direction of the mounting cover. The limiting plate has a limiting opening, and the limiting opening corresponds to the lower pressure plate one-to-one, and the length direction of the limiting opening is consistent with the length direction of the limiting plate. The lower pressure plate is passed through the limiting opening, and side plates are connected on both sides of the lower pressure plate along the thickness direction of the mounting cover. The side plates are arranged on the side of the lower pressure plate away from the mounting ring, and the side plates and the mounting ring are spaced apart to form a sliding opening for the limiting plate to pass through, and the limiting plate is embedded in the sliding opening.

[0023] By adopting the above technical solution, when installing the contact assembly, the lower pressure plate is embedded in the limit opening, and one end of the side plate contacts one side of the limit plate, the lower pressure plate moves along the width direction of the installation cover, the upper pressure plate and the installation ring move with the lower pressure plate, and the side plate contacts the limit plate, thereby limiting the moving direction of the lower pressure plate, so that the lower pressure plate can move stably in a predetermined direction, thereby facilitating the lower pressure plate to move to the required position and facilitating the installation of the contact assembly.

[0024] Optionally, a mounting cavity is formed between a side of the limiting plate away from the other limiting plate and an inner wall of one end of the mounting cover, and the mounting ring is arranged in the mounting cavity. The inner walls on both sides of the mounting cavity along the thickness of the mounting cover are connected with support plates, and the support plates are in contact with the circumferential side of the mounting ring.

[0025] By adopting the above technical solution and adding a support plate, when installing the contact assembly, the circumferential side of the mounting ring contacts the support plate, and the support plate limits the moving direction of the mounting ring, thereby facilitating the movement of the mounting ring to the required position and facilitating the installation of the contact assembly.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. When installing the fuse base, the contact assembly enters the installation cover through the installation opening, and the contact assembly is installed in the installation cover. After the contact assembly is installed, the fuse core is installed in the installation frame, and the installation frame enters the installation cover through the installation opening and is installed in the installation cover, thereby completing the installation of the fuse base. The integrated installation cover reduces the time consumed during the installation process and reduces the control problems during the installation process, thereby improving product quality; 2. When the mounting cover is mounted on the guide rail, the moving member drives the sliding block to move along the length direction of the mounting cover, so that the sliding block is away from the fixed plate, so that the mounting cover is close to the guide rail and the guide rail is embedded in the first gap. After the guide rail is embedded in the first gap, the moving member drives the sliding block to move along the length direction of the mounting cover, so that the sliding block and the second clamping block are close to the first clamping block, and then the guide rail is driven to be embedded in the second gap, so that the mounting cover is stably connected to the guide rail; 3. When the wire is embedded in the third gap, rotate the first bolt so that the first bolt moves along the width direction of the mounting cover and approaches the lower pressure plate. When the first bolt moves along the width direction of the mounting cover, the first bolt pushes the upper pressure plate to move and makes the upper pressure plate and the wire press tightly, so that the wire is stably connected to the third gap. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a three-dimensional structural diagram of this embodiment.

[0028] Figure 2 It is a top view of this embodiment.

[0029] Figure 3 This embodiment Figure 2 Sectional view along AA direction.

[0030] Figure 4 This embodiment Figure 2 Cross-sectional view along the BB axis.

[0031] Figure 5 3D is a three-dimensional structural diagram of the sliding block in this embodiment.

[0032] Figure 6 3D is a three-dimensional structural diagram of the contact assembly in this embodiment.

[0033] Figure 7 4 is a top view of the contact assembly in this embodiment.

[0034] Figure 8 This embodiment Figure 7 Enlarged view of the CC section.

[0035] Fig. 9 It is a three-dimensional structural diagram of the installation cover in this embodiment.

[0036] Fig.10 2 is a three-dimensional structural diagram of the mounting frame in this embodiment.

[0037] Fig.11 3D is a three-dimensional structural diagram of the baffle in this embodiment.

[0038] Fig.12 This embodiment Figure 2 Cross-sectional view along DD direction.

[0039] Description of reference numerals: 100, mounting cover; 110, wiring port; 120, mounting port; 130, first groove; 140, sliding groove; 141, clamping plate; 142, fourth gap; 143, mounting block; 150, connecting groove; 151, connecting channel; 160, fixing groove; 170, embedded nut; 180, first clearance groove; 190, first positioning groove; 191, third clearance groove; 192, second positioning groove; 193, socket; 194, first strip hole; 195, insulating block; 196, heat dissipation hole; 197, through hole; 200, mounting frame; 210, rotating block; 211, handle; 212, pressing block; 213, placement slot; 214, first positioning block; 215, fifth clamping block; 220, mounting rod; 230, support rod; 231, reinforcement rod; 232, guide rod; 240, fifth gap; 250, connecting slot; 251, second clearance slot; 252, round hole; 253, first connecting hole; 254, second connecting hole; 255, third connecting hole; 256, support platform; 257, stopper; 258, first block; 259, abutment plate; 300, contact assembly; 310, upper pressure plate; 311, second friction strip; 320, lower pressure plate; 321, first friction strip; 323, fixing strip; 324, side plate; 32 5. Sliding opening; 330. Clamp; 331. First clamp; 332. Second clamp; 333. First guide plate; 334. Second guide plate; 340. Retaining spring; 350. Second bolt; 360. Third gap; 370. First bolt; 371. Support ring; 400. Fixing plate; 410. First clamp; 420. First gap; 500. Sliding block; 510. Support block; 511. Sliding opening; 520. Mounting hole; 521. First protrusion; 522. Spring; 530. Second clamp; 540. Second gap; 550. Block; 600. Mounting ring; 610. First plate; 611. Fourth The clamping block; 620, the second plate; 621, the first opening; 630, the third plate; 631, the strip groove; 640, the fourth plate; 641, the second opening; 650, the fifth plate; 651, the third clamping block; 700, the limiting plate; 710, the mounting cavity; 711, the third positioning groove; 712, the guide groove; 720, the limiting opening; 730, the supporting plate; 800, the baffle; 810, the second positioning block; 820, the connecting rod; 821, the insert block; 830, the first making way hole; 840, the through opening; 850, the cylinder; 900, the second protrusion; 910, the first material stealing channel; 920, the second material stealing channel; 930, the first material stealing groove. DETAILED DESCRIPTION

[0040] The following is combined with Figure 1-12 This application is described in further detail.

[0041] The present application embodiment discloses a fuse base. Figure 1 and Figure 2 A fuse base includes a mounting cover 100, a mounting frame 200, and a contact assembly 300. The mounting cover 100 has wiring ports 110 for power lines to pass through at both ends along its length. The mounting frame 200 and the contact assembly 300 are both connected inside the mounting cover 100.

[0042] Reference Figure 1 and Figure 3 The mounting cover 100 has a mounting opening 120 along one side of its width direction, and the length direction of the mounting opening 120 is consistent with the length direction of the mounting cover 100. The mounting opening 120 is used for the mounting frame 200 and the contact assembly 300 to pass through. The mounting cover 100 is integrally arranged to reduce burrs and gaps generated during the installation process and improve product quality.

[0043] Reference Figure 1 and Figure 3 , a first groove 130 is provided at one end of the mounting cover 100 away from the mounting opening 120. The first groove 130 is provided at one end of the mounting cover 100 along its length direction, and both ends of the first groove 130 are opened along the length direction of the mounting cover 100. A fixing plate 400 and a sliding block 500 are connected to the mounting cover 100 along its width direction and at one end away from the mounting opening 120. The sliding block 500 and the fixing plate 400 are sequentially spaced along the length direction of the mounting cover 100. The fixing plate 400 is connected to the opening at one end of the first groove 130. The fixing plate 400 is provided at one end of the first groove 130 close to the sliding block 500. The length direction of the fixing plate 400 is consistent with the thickness direction of the mounting cover 100, and the two ends of the fixing plate 400 along its length direction are respectively connected to the corresponding side inner walls of the first groove 130.

[0044] Reference Figure 1 and Figure 4 The length direction of the sliding block 500 is consistent with the length direction of the mounting cover 100, and the sliding block 500 is slidably connected to the outer wall of the mounting cover 100 along the length direction of the mounting cover 100. The mounting cover 100 is provided with a sliding groove 140 at one end away from the mounting opening 120, and the length direction of the sliding groove 140 is consistent with the length direction of the mounting cover 100. The sliding groove 140 and the first groove 130 are sequentially spaced apart along the length direction of the mounting cover 100. Both ends of the sliding groove 140 are opened along the length direction, and the sliding block 500 is slidably connected in the sliding groove 140 along the length direction.

[0045] Reference Figure 4 and Figure 5The inner walls of the sliding groove 140 on both sides along the width direction are connected with clamping plates 141, the length direction of the clamping plates 141 is consistent with the length direction of the mounting cover 100, and the clamping plates 141 and the outer wall of the mounting cover 100 are separated to form a fourth gap 142. The sliding block 500 is connected with supporting blocks 510 on both sides along the width direction, the length direction of the supporting blocks 510 is consistent with the length direction of the sliding block 500, and the supporting blocks 510 are slidably connected in the sliding groove 140 along the length direction. The supporting block 510 is provided with a sliding opening 511, and the length direction of the sliding opening 511 is consistent with the length direction of the supporting block 510. The clamping plates 141 are slidably connected in the sliding opening 511 along the length direction.

[0046] Reference Figure 3 and Figure 5 The sliding block 500 is provided with a mounting hole 520, and the length direction of the mounting hole 520 is consistent with the length direction of the mounting cover 100. The mounting cover 100 is provided with a connecting groove 150 on the outer wall along the width direction and at one end away from the mounting opening 120, and the connecting groove 150 is connected with the mounting hole 520. The connecting groove 150 is provided with a connecting channel 151 on the inner wall of one side along the width direction of the mounting cover 100, and two connecting channels 151 are provided, and the two connecting channels 151 are provided at both ends of the connecting channel 151 along the thickness direction of the mounting cover 100, and the connecting channel 151 connects the connecting groove 150 and the mounting cover 100.

[0047] Reference Figure 3 and Figure 5 , the mounting hole 520 is connected with a first protrusion 521 along one end of its length direction, the first protrusion 521 is cylindrical, and the first protrusion 521 is arranged on the inner wall of the mounting hole 520 close to the fixed plate 400. The sliding groove 140 is fixedly connected with a mounting block 143 on one inner wall along the length direction of the mounting cover 100, the mounting block 143 is arranged at the end of the sliding groove 140 away from the fixed plate 400, the mounting block 143 is embedded in the mounting hole 520 and slidably connected to the mounting hole 520 along the length direction of the mounting cover 100. The mounting hole 520 is connected with a baffle block 550 on both inner walls along the width direction, the baffle block 550 is connected to the side of the mounting hole 520 away from the mounting cover 100, the baffle block 550 is arranged on the side close to the mounting cover 100 in an arc-shaped surface, and the concave arc surface of the arc-shaped surface is arranged toward the spring 522. When the sliding block 500 is embedded in the sliding groove 140, the mounting block 143 is embedded in the mounting hole 520.

[0048] Reference Figure 3 and Figure 5 A moving part is connected to the sliding block 500, and the moving part is a spring 522. The spring 522 is arranged in the mounting hole 520. The length direction of the spring 522 is consistent with the length direction of the mounting hole 520. One end of the spring 522 is sleeved on the first protrusion 521 along its length, and the other end of the spring 522 contacts the mounting block 143.

[0049] Reference Figure 3 The first clamping block 410 is connected to one end of the fixed plate 400 close to the sliding block 500. The length direction of the first clamping block 410 is consistent with the thickness direction of the mounting cover 100, and a first gap 420 for the guide rail to be embedded is provided between the first clamping block 410 and the outer wall of the mounting cover 100. A first guide surface is provided on the side of the first clamping block 410 away from the mounting cover 100. The first guide surface is inclined, and the first guide surface facilitates the first clamping block 410 to approach the guide rail.

[0050] Reference Figure 3 and Figure 5 The sliding block 500 is connected to the end close to the fixed plate 400 with a second clamping block 530, and the second clamping block 530 is separated from the outer wall of the mounting cover 100 by a second gap 540 for the guide rail to be embedded. The second clamping block 530 is provided with a second guide surface on the side away from the mounting cover 100, and the second guide surface is inclined, and the second guide surface facilitates the second clamping block 530 to approach the guide rail.

[0051] When the mounting cover 100 is installed on the guide rail, the sliding block 500 is moved along the length direction of the mounting cover 100, so that the sliding block 500 moves and moves away from the fixed plate 400, so that the spring 522 is squeezed and deformed, thereby facilitating the mounting cover 100 to approach the guide rail. When the mounting cover 100 approaches the guide rail, the operator releases the sliding block 500, and the spring 522 restores its shape and pushes the sliding block 500 to move along the length direction of the mounting cover 100, so that the guide rail is embedded in the second gap 540, so that the mounting cover 100 is stably connected to the guide rail.

[0052] Reference Figure 3 and Figure 6 There are two contact assemblies 300, which are spaced apart in sequence along the length direction of the mounting cover 100. The contact assemblies 300 correspond to the wiring ports 110 one by one, and the contact assemblies 300 are used to connect with the wires. The mounting frame 200 is arranged between the two contact assemblies 300. The two contact assemblies 300 are respectively used to connect with the two ends of the fuse.

[0053] Reference Figure 3 and Figure 7 The contact assembly 300 includes a mounting ring 600 , an upper pressing plate 310 , and a lower pressing plate 320 . The mounting ring 600 is opened toward the wiring port 110 , and the mounting ring 600 is a square ring.

[0054] Reference Figure 4 and Figure 7The mounting ring 600 includes a first plate 610, a second plate 620, a third plate 630, a fourth plate 640, and a fifth plate 650. The first plate 610, the second plate 620, the third plate 630, the fourth plate 640, and the fifth plate 650 are distributed along the four sides of the mounting ring 600 and connected end to end. The first plate 610 is arranged on the side of the fifth plate 650 away from the fourth plate 640, and the first plate 610 and the fifth plate 650 are in contact with each other on one side. The second plate 620 is provided with a first opening 621 at one end close to the first plate 610, and the fifth plate 650 is connected with a third block 651 at one end close to the first plate 610, and the third block 651 is embedded in the first opening 621. The first plate 610 is connected with a fourth block 611 at one end away from the second plate 620, and the fourth block 611 is in the shape of a trapezoid and a rectangle. The fourth plate 640 is provided with a second opening 641 at one end away from the third plate 630 for the fourth block 611 to be embedded.

[0055] Reference Figure 3 and Figure 8 A plurality of strip grooves 631 are formed on one side of the third plate 630 close to the first plate 610 . The length direction of the strip grooves 631 is consistent with the thickness direction of the mounting cover 100 , and the plurality of strip grooves 631 are spaced apart in sequence along the length direction of the mounting cover 100 .

[0056] Reference Figure 8 The lower pressing plate 320 and the upper pressing plate 310 are both disposed in the mounting ring 600, and one side of the lower pressing plate 320 contacts the side of the third plate 630 close to the first plate 610. A plurality of first friction strips 321 are connected to the side of the lower pressing plate 320 away from the third plate 630, and the length direction of the first friction strips 321 is consistent with the thickness direction of the mounting cover 100, and the plurality of first friction strips 321 are sequentially spaced along the length direction of the mounting cover 100.

[0057] Reference Figure 3 and Figure 8 The length direction of the lower pressing plate 320 is consistent with the length direction of the mounting cover 100. One end of the lower pressing plate 320 passes through the mounting ring 600 along its length direction and is connected to a fixing strip 323. The length direction of the fixing strip 323 is consistent with the thickness direction of the mounting cover 100. A fixing groove 160 is provided on the inner wall of the end of the mounting cover 100 away from the mounting opening 120 for the fixing strip 323 to be embedded. The length direction of the fixing groove 160 is consistent with the thickness direction of the mounting cover 100.

[0058] Reference Figure 6 and Figure 8, the other end of the lower pressing plate 320 is connected with clamping plates 330. There are two clamping plates 330, and the two clamping plates 330 are respectively connected to both sides of the lower pressing plate 320 along the thickness direction of the installation cover 100. A fourth gap 142 for the fuse core to be inserted is provided at an interval between the two clamping plates 330. The clamping plate 330 includes a first clamping piece 331 and a second clamping piece 332. One end of the first clamping piece 331 is connected to the lower pressing plate 320, and the other end of the first clamping piece is connected to one end of the second clamping piece 332. The second clamping piece 332 is arranged as an arc-shaped piece, and the concave arc side of the second clamping piece 332 faces the fuse core. A first guiding plate 333 is connected to the second clamping piece 332 along the width direction of the installation cover 100 and on the side away from the first clamping piece 331. A second guiding plate 334 is connected to the second clamping piece 332 along the length direction of the installation cover 100 and on the side away from the installation ring 600. The length direction of the first guiding plate 333 is consistent with the length direction of the installation cover 100, and one side of the first guiding plate 333 along its width direction is connected to the second clamping piece 332, and the other side of the first guiding plate 333 is inclined towards the inner wall of the installation cover 100. One side of the second guiding plate 334 is connected to the second clamping piece 332, and the other side of the second guiding plate 334 is inclined towards the inner wall of the installation cover 100.

[0059] Refer to Figure 3 and Figure 6 , the lower pressing plate 320 is connected with a pressing member. The pressing member is arranged as a circlip 340. The circlip 340 is arranged in a "C" shape, and the opening of the circlip 340 faces the installation port 120. One end of the lower pressing plate 320 away from the installation ring 600 is arranged inside the circlip 340, and the clamping plate 330 is arranged inside the circlip 340. The circlip 340 is detachably connected to the installation cover 100 through a second bolt 350. Two insert nuts 170 are embedded on the side of the installation cover 100 away from the installation port 120, and the insert nuts 170 correspond to the second bolts 350 one by one. The second bolt 350 passes through the lower pressing plate 320 and the circlip 340 along the width direction of the installation cover 100 and is threadedly connected to the insert nut 170. First让位 grooves 180 for the circlip 340 to give way are provided on the inner walls of both sides of the installation cover 100 along its width direction.

[0060] Refer to Figure 7 , side plates 324 are connected to both sides of the lower pressing plate 320 along the thickness direction of the installation cover 100. The side plates 324 are arranged between the circlip 340 and the installation ring 600. The length direction of the side plates 324 is consistent with the length direction of the installation cover 100. A sliding port 325 for the limiting plate 700 to pass through is formed at an interval between the side plates 324 and the installation ring 600.

[0061] Refer to Figure 3 and Figure 8, the upper pressing plate 310 is arranged in a "C" shape. One end of the upper pressing plate 310 is arranged inside the mounting ring 600. A third gap 360 for embedding the power supply wire is formed at an interval between the upper pressing plate 310 and the lower pressing plate 320. The third gap 360 communicates with the wiring port 110. A plurality of second friction strips 311 are connected to the side of the upper pressing plate 310 close to the lower pressing plate 320. The length direction of the second friction strips 311 is the same as the thickness direction of the mounting cover 100. The plurality of second friction strips 311 are distributed at intervals along the length direction of the mounting cover 100. Both the upper pressing plate 310 and the lower pressing plate 320 are used for connecting to the wire.

[0062] Referring to Figure 8 , the contact component 300 further includes a pressing member, and the pressing member is arranged as a first bolt 370. The length direction of the first bolt 370 is the same as the width direction of the mounting cover 100. The first bolt 370 passes through one end of the upper pressing plate 310 and the inner wall of one side of the mounting ring 600, and the threaded end of the first bolt 370 contacts the side of the upper pressing plate 310 far from the lower pressing plate 320. A support ring 371 is sleeved on the end of the first bolt 370 far from the mounting ring 600. The central axis of the support ring 371 is collinear with the central axis of the first bolt 370. The support ring 371 contacts the upper pressing plate 310, and the support ring 371 is arranged inside the upper pressing plate 310. The contact component 300 is all made of conductive material. During use, one end of the wire is embedded into the third gap 360, and the first bolt 370 is rotated so that the first bolt 370 moves along its length direction and drives the upper pressing plate 310 to press against the wire, thereby stably connecting the wire in the third gap 360.

[0063] Referring to Figure 8 and Fig. 9 , a limiting plate 700 is connected inside the mounting cover 100. There are two limiting plates 700. The two limiting plates 700 are arranged at intervals along the length direction of the mounting cover 100. The length direction of the limiting plate 700 is the same as the length direction of the mounting cover 100. The width direction of the limiting plate 700 is the same as the thickness direction of the mounting cover 100. Both sides of the limiting plate 700 along its width direction are respectively connected to the inner walls of the corresponding sides of the mounting cover 100. An installation cavity 710 is formed at an interval between the side of the limiting plate 700 far from the other limiting plate 700 and the inner wall of the corresponding end of the mounting cover 100. The installation cavities 710 correspond to the mounting rings 600 one by one. The mounting rings 600 are arranged inside the installation cavities 710. When installing the contact component 300, the mounting rings 600 are slidably connected inside the installation cavities 710 along the width direction of the mounting cover 100.

[0064] Referring to Figure 7 and Fig. 9The limiting plate 700 is provided with a limiting opening 720, and the limiting opening 720 corresponds to the lower pressing plate 320 one by one, and the top of the limiting opening 720 is set to be open. The lower pressing plate 320 is inserted into the limiting opening 720 along its length direction. And the limiting plate 700 is embedded in the sliding opening 325. When the contact assembly 300 is installed, the lower pressing plate 320 is slidably connected to the limiting opening 720 along the width direction of the installation cover 100, and the limiting plate 700 is slidably connected to the sliding opening 325 along the width direction of the installation cover 100.

[0065] Reference Figure 8 and Fig. 9 The mounting cavity 710 is connected to the inner wall on both sides of the mounting cover 100 along the thickness thereof with support plates 730, the length direction of the support plates 730 is consistent with the width direction of the mounting cover 100, and the support plates 730 arranged on both sides of the mounting cavity 710 are respectively in contact with the corresponding side walls of the mounting ring 600. The stopper plate 700 and the support plate 730 are added so that when the contact assembly 300 is installed, the lower pressing plate 320 and the mounting ring 600 can move stably in a predetermined direction, which facilitates the installation of the contact assembly 300.

[0066] Reference Figure 3 and Fig.10 The mounting frame 200 is rotatably connected to the mounting opening 120 through rivets, and one end of the mounting frame 200 is rotatably connected to the inner wall of the mounting opening 120. The mounting frame 200 includes a rotating block 210, a mounting rod 220, and a support rod 230. The length direction of the rotating block 210 is consistent with the length direction of the mounting cover 100. The rotating block 210 is rotatably connected to the mounting opening 120 along one end of its length, and the rivet passes through the mounting cover 100 and the rotating block 210 along the thickness direction of the mounting cover 100. A handle 211 is connected to one side of the rotating block 210 along the width direction of the mounting cover 100.

[0067] Reference Figure 3 and Fig.10 The length direction of the support rod 230 is consistent with the length direction of the rotating block 210. The support rod 230 is arranged on the side of the rotating block 210 away from the handle 211. A fifth gap 240 for placing the molten core is provided between the support rod 230 and one side of the rotating block 210. One end of the mounting rod 220 is connected to the rotating block 210, and the other end of the mounting rod 220 is connected to one end of the support rod 230. The mounting rod 220 is connected to one end of the rotating block 210 along the length direction of the rotating block 210. The support rod 230 is connected to reinforcing rods 231 on both sides along the width direction thereof. One end of the reinforcing rod 231 is connected to the support rod 230, and the other end of the reinforcing rod 231 is connected to the rotating block 210. The reinforcing rods 231 are arranged with an arc surface on one side close to each other, and the concave arc surface of the arc surface is arranged toward the other reinforcing rod 231. One end of the support rod 230 away from the mounting rod 220 is connected to a guide rod 232 . One end of the guide rod 232 is connected to the support rod 230 , and the other end of the guide rod 232 is tilted toward a side away from the rotating block 210 .

[0068] Reference Fig.10 The rotating block 210 is connected to a pressing block 212 on the side close to the support rod 230. The pressing block 212 is arranged at the end of the rotating block 210 away from the mounting rod 220. The pressing block 212 is provided with a placement groove 213 for the molten core to be embedded on the side close to the support rod 230. The inner wall of the placement groove 213 close to the end of the rotating block 210 is arranged in an inclined surface.

[0069] Reference Fig.10 A third guide surface and a fourth guide surface are provided on the side of the support rod 230 close to the rotating block 210, and the third guide surface and the fourth guide surface are distributed in sequence along the length direction of the support rod 230. The third guide surface and the fourth guide surface are both inclined. One end of the third guide surface along the width direction of the support rod 230 is higher than one end of the fourth guide surface along the width direction of the support rod 230, and the other end of the third guide surface is lower than the other end of the fourth guide surface.

[0070] Reference Fig.10 , the rotating block 210 is provided with a connecting groove 250 on one side along the thickness direction of the mounting cover 100, and the length direction of the connecting groove 250 is consistent with the length direction of the rotating block 210, and the connecting groove 250 is used for installing the indicator light. A second clearance groove 251 is provided on the inner wall of the connecting groove 250 away from the support rod 230, and the length direction of the second clearance groove 251 is consistent with the thickness direction of the mounting cover 100, and the inner wall of the second clearance groove 251 is provided with two round holes 252. A first connecting hole 253 and a second connecting hole 254 are provided on the inner wall of the connecting groove 250 close to the support rod 230, and the length direction of the second connecting hole 254 is consistent with the width direction of the mounting cover 100, and the second connecting hole 254 is opened at one end along its length direction. The inner walls of both sides of the second connecting hole 254 along its width direction are inclined, and the inner walls of both sides of the second connecting hole 254 along its width direction are arranged parallel to each other. The second connecting hole 254 is inclined at one end of the inner wall of one side along the length direction of the mounting cover 100 away from the inner wall of the other side.

[0071] Reference Fig.10 A third connection hole 255 is formed on the inner wall of the connection groove 250 along the thickness direction of the mounting cover 100. A support platform 256 is connected to the inner wall of the connection groove 250 near the support rod 230. The length direction of the support platform 256 is consistent with the thickness direction of the mounting cover 100. One end of the support platform 256 along its length direction is arranged in the third connection hole 255. A mounting groove is formed on the side of the support platform 256 away from the support rod 230. The length direction of the mounting groove is consistent with the length direction of the support platform 256.

[0072] Reference Fig.10 The support platform 256 is connected to a stopper 257 along its length direction and at one end away from the third connecting hole 255. The length direction of the stopper 257 is consistent with the width direction of the rotating block 210. The end of the stopper 257 away from the support rod 230 is connected to a first block 258, and the first block 258 is arranged in a prism shape.

[0073] Reference Figure 1 and Fig.10 The connection groove 250 is connected to two abutment plates 259 along the width direction of the mounting cover 100 and away from the inner wall of the support rod 230. The two abutment plates 259 are arranged at intervals along the length direction of the rotating block 210, and the length direction of the abutment plates 259 is consistent with the thickness direction of the mounting cover 100. The abutment plates 259 are provided with a fifth guide surface along the length direction and close to one end of the opening of the connection groove 250. The fifth guide surface is inclined, and the fifth guide surface facilitates the indicator light to be embedded in the connection groove 250.

[0074] Reference Fig. 9 and Fig.10 The rotating block 210 is connected to first positioning blocks 214 on both sides along the thickness direction of the mounting cover 100. The first positioning blocks 214 are arranged on the side of the rotating block 210 away from the support rod 230. The mounting cover 100 is provided with first positioning grooves 190 on both sides of the inner wall along the thickness direction. The first positioning grooves 190 correspond to the first positioning blocks 214 one by one. The first positioning grooves 190 are arranged along the inner wall of one end of the mounting cover 100 in a tilted manner toward the side away from the inner wall of the other end. The first positioning blocks 214 and the first positioning grooves 190 are added to facilitate the positioning of the mounting frame 200 when the mounting frame 200 is installed.

[0075] Reference Fig. 9 and Fig.10 The rotating block 210 is connected to the fifth clamping block 215 on both sides along the thickness direction of the mounting cover 100, and the fifth clamping block 215 is arranged at one end of the rotating block 210 along its length direction and away from the rivet. The mounting cover 100 is provided with third clearance grooves 191 on both sides of the inner wall along its thickness direction, and the length direction of the third clearance groove 191 is consistent with the width direction of the mounting cover 100. When in use, the fifth clamping block 215 is pressed against the inner wall of the third clearance groove 191.

[0076] Reference Figure 4 and Fig. 9 A baffle 800 is provided on one side of the first bolt 370 near the mounting opening 120, and two baffles 800 are respectively provided on both sides of the mounting frame 200 along the length direction of the mounting cover 100. The baffle 800 is embedded in the mounting opening 120, and the baffle 800 is detachably connected to the mounting cover 100.

[0077] Reference Fig. 9 and Fig.11The baffle 800 is connected to a second positioning block 810 along the length direction of the mounting cover 100 and at one end away from the mounting frame 200. The mounting cover 100 is provided with second positioning grooves 192 on the inner wall at both ends along the length direction. The second positioning grooves 192 correspond to the second positioning blocks 810 one by one, and the second positioning blocks 810 are embedded in the second positioning grooves 192. The length direction of the second positioning grooves 192 is consistent with the width direction of the mounting cover 100, and the second positioning grooves 192 are connected to the wiring port 110.

[0078] Reference Fig. 9 and Fig.11 The installation cavity 710 is provided with third positioning grooves 711 on both inner walls along the thickness direction of the installation cover 100, and the baffle 800 is respectively embedded in the two third positioning grooves 711 at both ends along the thickness direction of the installation cover 100. The third positioning groove 711 is provided with a guide groove 712 on one inner wall along the width direction of the installation cover 100, and the length direction of the guide groove 712 is consistent with the length direction of the installation cover 100. The guide groove 712 is inclined from the end of the inner wall of one side of the installation cover 100 away from the installation opening 120 toward the side close to the positioning ring along the thickness direction of the installation cover 100. The inner walls of the guide groove 712 on both sides along the length direction of the installation cover 100 are both rounded.

[0079] Reference Figure 4 and Fig.11 , two connecting rods 820 are connected to the side of the baffle 800 close to the first bolt 370, and the two connecting rods 820 are spaced apart and distributed on both sides of the baffle 800 along the thickness direction of the mounting cover 100. The length direction of the connecting rod 820 is consistent with the width direction of the mounting cover 100. One end of the connecting rod 820 is connected to the baffle 800 along its length direction, and the other end of the connecting rod 820 is connected to the baffle 800. The mounting cover 100 is provided with a socket 193 on both sides of the side wall along its thickness direction, and the plug 821 is embedded in the socket 193. A sixth guide surface is provided on the side of the plug 821 away from the baffle 800, and the sixth guide surface is inclined. The sixth guide surface facilitates the plug 821 to be embedded in the socket 193, and the baffle 800 and the mounting cover 100 are clamped with the plug 821 and the socket 193. The baffle 800 is provided with a first clearance hole 830 at both ends of the mounting cover 100 along the thickness direction.

[0080] Reference Figure 4 and Fig.11 The baffle plate 800 is provided with a through-port 840, which is in communication with the inside of the mounting cover 100. The through-port 840 is opened toward the first bolt 370. A cylinder 850 is connected to the side of the baffle plate 800 away from the first bolt 370. The cylinder 850 is in communication with the mounting cover 100 through the through-port 840. The center of the cylinder 850 is in line with the central axis of the first bolt 370, and the end of the cylinder 850 away from the first bolt 370 is closed. The baffle plate 800 is added to avoid accidental touch by the operator as much as possible.

[0081] Reference Figure 1 and Fig.12 Two first strip holes 194 are formed on the inner wall of one end of the mounting cover 100 away from the mounting opening 120, and the two first strip holes 194 are spaced apart along the thickness direction of the mounting cover 100. The length direction of the first strip holes 194 is consistent with the length direction of the mounting cover 100, and an insulating block 195 is embedded in the first strip holes, and the insulating block 195 is made of insulating material.

[0082] Reference Figure 3 A second protrusion 900 is connected to the inner wall of the end of the mounting cover 100 away from the mounting opening 120, and a first material stealing channel 910 is provided on the second protrusion 900, and the length direction of the first material stealing channel 910 is consistent with the width direction of the mounting cover 100. A second material stealing channel 920 is provided on the inner wall of the mounting cover 100, and the length direction of the second material stealing channel 920 is consistent with the width direction of the mounting cover 100. The first material stealing channel 910 is connected to the second material stealing channel 920. The second material stealing channel 920 is provided with first material stealing grooves 930 on both inner walls along the length direction of the mounting cover 100.

[0083] Reference Figure 1 and Fig. 9 The mounting cover 100 has a plurality of heat dissipation holes 196 on both inner walls along the thickness direction thereof. The heat dissipation holes 196 are arranged in an arc shape and are spaced in sequence along the width direction of the mounting cover 100. The mounting cover 100 has two through holes 197 on one side wall along the thickness direction thereof. The length direction of the through holes 197 is consistent with the thickness direction of the mounting cover 100, and the through holes 197 are used for rivets to pass through.

[0084] The implementation principle of a fuse base of the embodiment of the present application is as follows: during installation, the contact assembly 300 enters the installation cover 100 through the installation opening 120, and the lower pressing plate 320 and the retaining spring 340 are connected to the installation cover 100 through the second bolt 350. After the contact assembly 300 is installed, the fuse core is installed in the fifth gap 240, and the indicator light is embedded in the connection groove 250. The mounting frame 200 is embedded in the installation opening 120, and the mounting frame 200 is installed in the installation opening 120 by rivets. After the installation is completed, the baffle 800 is installed in the installation opening 120. During use, the wire passes through the wiring opening 110 and is embedded in the third gap 360. The first bolt 370 is rotated so that the first bolt 370 moves along the width direction of the installation cover 100. The first bolt 370 pushes the upper pressing plate 310 to move along the width direction of the installation cover 100, so that the upper pressing plate 310 is pressed against the wire, so that the wire is stably connected to the third gap 360. The mounting cover 100 is integrally arranged to reduce burrs and gaps during the mounting process, thereby improving product quality.

[0085] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A fuse base, characterized in that: The invention comprises a mounting cover (100), a mounting frame (200) connected to the mounting cover (100), and a contact assembly (300); the mounting cover (100) is provided with wiring ports (110) at both ends along the length direction thereof; two contact assemblies (300) are provided, and the contact assemblies (300) correspond to the wiring ports (110) one by one; the contact assemblies (300) are used to connect to electric wires; the mounting frame (200) is used to connect to a fuse; the two contact assemblies (300) are used to connect to both ends of the fuse respectively; the mounting cover (100) is provided with a mounting port (120) at one end along the width direction thereof; the mounting port (120) is used to allow the mounting frame (200) and the contact assembly (300) to pass through.

2. A fuse base according to claim 1, characterized in that: The mounting cover (100) is connected to a fixed plate (400) and a sliding block (500) along its width direction and at one end away from the mounting opening (120); the sliding block (500) and the fixed plate (400) are spaced in sequence along the length direction of the mounting cover (100); the fixed plate (400) is connected to a first clamping block (410) at one end close to the sliding block (500); a first gap (420) for a guide rail to be embedded is provided between the first clamping block (410) and the outer wall of the mounting cover (100); the sliding block (500) is connected to a second clamping block (530) at one end close to the fixed plate (400); a second gap (540) for a guide rail to be embedded is provided between the second clamping block (530) and the outer wall of the mounting cover (100); the mounting cover (100) is connected to a moving part; the moving part is used to drive the sliding block (500) to slide along the length direction of the mounting cover (100) and to be connected to the mounting cover (100).

3. A fuse base according to claim 2, characterized in that: The sliding block (500) is provided with a mounting hole (520), the length direction of the mounting hole (520) is consistent with the length direction of the mounting cover (100), the moving member is provided with a spring (522), the length direction of the spring (522) is consistent with the length direction of the mounting hole (520), one end of the spring (522) is connected to the inner wall of the mounting hole (520), and the other end of the spring (522) is in contact with the outer wall of the mounting cover (100), and the spring (522) drives the sliding block (500) to move and enables the second clamping block (530) to be clamped with the guide rail.

4. A fuse base according to claim 1, characterized in that: The contact assembly (300) comprises an upper pressing plate (310), a lower pressing plate (320), and a pressing member. The upper pressing plate (310) and the lower pressing plate (320) are spaced apart in sequence along the width direction of the mounting cover (100). The upper pressing plate (310) and the lower pressing plate (320) are spaced apart to form a third gap (360) for embedding a power line. The third gap (360) is connected to the wiring port (110). The upper pressing plate (310) and the lower pressing plate (320) are both used to connect to the wires. The other end of the lower pressing plate (320) is used to connect to the fuse. The pressing member is used to drive the upper pressing plate (310) to move along the width direction of the mounting cover (100) and drive the upper pressing plate (310) to press against the wires.

5. A fuse base according to claim 4, characterized in that: The contact assembly (300) further comprises a mounting ring (600), the opening of the mounting ring (600) faces the wiring port (110), the upper pressure plate (310) and the lower pressure plate (320) are both arranged in the mounting ring (600), the upper pressure plate (310) is slidably connected in the mounting ring (600) along the width direction of the mounting cover (100), the fastening member is a first bolt (370), the length direction of the first bolt (370) is consistent with the width direction of the mounting cover (100), the first bolt (370) passes through and is threadedly connected to one side of the mounting ring (600), and one end of the first bolt (370) is in contact with the upper pressure plate (310).

6. A fuse base according to claim 4, characterized in that: The lower pressing plate (320) is connected to two clamping plates (330), and the two clamping plates (330) are respectively connected to two sides of the lower pressing plate (320) along the thickness direction of the mounting cover (100), and a fourth gap (142) for embedding a fusible core is provided between the two clamping plates (330), and the clamping plates (330) are used to contact the fusible core. The lower pressing plate (320) is provided with a clamping member, and the clamping member drives the clamping plates (330) to press against the fusible core.

7. A fuse base according to claim 5, characterized in that: A baffle (800) is provided on the side of the first bolt (370) close to the mounting opening (120), and the baffle (800) is detachably connected to the mounting cover (100). A through opening (840) is provided on the baffle (800), and the through opening (840) is arranged to face the first bolt (370). A cylinder (850) is connected to the side of the baffle (800) away from the first bolt (370), and the cylinder (850) is connected to the mounting cover (100) through the through opening (840).

8. A fuse base according to claim 7, characterized in that: A connecting rod (820) is connected to one side of the baffle plate (800) close to the first bolt (370); an insert block (821) is connected to one end of the connecting rod (820) away from the first bolt (370); a socket (193) is provided on a side wall of the mounting cover (100) along one side of the thickness direction; the insert block (821) is embedded in the socket (193); and the baffle plate (800) and the mounting cover (100) are clamped together by the insert block (821) and the socket (193).

9. A fuse base according to claim 5, characterized in that: The mounting cover (100) is connected to a limiting plate (700), two limiting plates (700) are provided, and the two limiting plates (700) are arranged at intervals along the length direction of the mounting cover (100), and the length direction of the limiting plate (700) is consistent with the length direction of the mounting cover (100), and the limiting plate (700) is provided with a limiting opening (720), and the limiting opening (720) corresponds to the lower pressure plate (320) in a one-to-one manner, and the length direction of the limiting opening (720) is consistent with the length direction of the limiting plate (70 0) are consistent in length direction, the lower pressure plate (320) is inserted into the limiting opening (720), the lower pressure plate (320) is connected to side plates (324) on both sides along the thickness direction of the mounting cover (100), the side plates (324) are arranged on the side of the lower pressure plate (320) away from the mounting ring (600), the side plates (324) and the mounting ring (600) are spaced apart to form a sliding opening (325) for the limiting plate (700) to pass through, and the limiting plate (700) is embedded in the sliding opening (325).

10. A fuse base according to claim 9, characterized in that: The side of the limiting plate (700) away from the other limiting plate (700) is spaced apart from the inner wall of one end of the mounting cover (100) to form a mounting cavity (710), the mounting ring (600) is arranged in the mounting cavity (710), and the inner walls on both sides of the mounting cavity (710) along the thickness of the mounting cover (100) are connected to support plates (730), and the support plates (730) are in contact with the circumference of the mounting ring (600).

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