CN211045295U - Switch with a switch body - Google Patents

Abstract

The utility model relates to the technical field of switches, and provides a switch, which comprises a lower shell with a containing cavity, an upper shell which is detachably covered on the lower shell and is provided with a containing cavity, a plug arranged in the containing cavity, and a female terminal which is arranged in the containing cavity and is matched with the plug; when the upper shell is covered on the lower shell, the plug is connected with the female terminal, and the upper shell and the lower shell enclose to form a closed space; a tensioning system for tensioning the upper shell and the lower shell is arranged between the upper shell and the lower shell. The upper shell is covered on the lower shell to form a closed space, and the plug and the female terminal are both positioned in the closed space, so that the influence of dust/moisture on the plug and the female terminal is reduced; through taut system take-up between the casing, ensured the fastness between last casing and the lower casing, avoid not hard up, reduced outside dust/moisture promptly and entered into in the airtight space that last casing and lower casing enclose.

Description

Switch with a switch body

Technical Field

The utility model belongs to the technical field of the switch, more specifically say, relate to a switch.

Background

The switch is widely applied in modern production and life, and generally comprises a plug arranged on an upper shell and a female terminal arranged on a lower shell, wherein the circuit can be conducted when the plug is inserted into the female terminal. When the switch is used, the upper shell and the lower shell are easy to loosen, so that external dust/moisture is easy to enter the switch, and the use safety of the switch is seriously influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a switch to the technical problem in the outside dust/moisture that exists among the solution prior art gets into the switch easily.

In order to achieve the above object, the utility model adopts the following technical scheme: the switch comprises a lower shell with an accommodating cavity, an upper shell which is detachably covered on the lower shell and is provided with an accommodating cavity, a plug arranged in the accommodating cavity, and a female terminal which is arranged in the accommodating cavity and is matched with the plug; when the upper shell is covered on the lower shell, the plug is connected with the female terminal, and the upper shell and the lower shell enclose to form a closed space; and a tensioning system for tensioning the upper shell and the lower shell is arranged between the upper shell and the lower shell.

The utility model provides a switch's beneficial effect lies in: compared with the prior art, the switch provided by the utility model has the advantages that when the upper shell is folded on the lower shell, the plug and the female terminal are conducted, and the current can pass through the plug and the female terminal; when the upper shell is separated from the lower shell, the plug is disconnected with the female terminal, and the circuit is disconnected; the plug is arranged in the accommodating concave cavity of the upper shell, the female terminal is arranged in the accommodating concave cavity of the lower shell, and the upper shell and the lower shell reduce the influence of external dust/moisture on the plug and the female terminal; the upper shell is covered on the lower shell to form a closed space, and the plug and the female terminal are both positioned in the closed space, so that the influence of dust/moisture on the plug and the female terminal is reduced; through taut system take-up between the casing, ensured the fastness between last casing and the lower casing, avoid not hard up, reduced outside dust/moisture promptly and entered into in the airtight space that last casing and lower casing enclose.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

Fig. 1 is a first schematic perspective view of a switch according to an embodiment of the present invention;

fig. 2 is a schematic view of a handle installation provided by an embodiment of the present invention;

FIG. 3 is an enlarged view of the point A in FIG. 2;

fig. 4 is a schematic perspective view of a switch according to an embodiment of the present invention;

fig. 5 is an assembly schematic diagram of an upper housing and a lower housing provided by an embodiment of the present invention;

fig. 6 is a first schematic view (a view from the inside to the outside of the handle) of the installation of the elastic plate according to the embodiment of the present invention;

fig. 7 is a second schematic view illustrating an installation of an elastic plate according to an embodiment of the present invention;

fig. 8 is a first perspective view of a sliding plate according to an embodiment of the present invention;

fig. 9 is a second schematic perspective view of the sliding plate according to the embodiment of the present invention;

fig. 10 is a schematic perspective view of a plug according to an embodiment of the present invention;

fig. 11 is a schematic installation diagram of a plug provided in an embodiment of the present invention;

fig. 12 is an assembly view of the conductive connecting portion, the bolt and the nut seat according to the embodiment of the present invention;

fig. 13 is an assembly diagram of a plug and a male rubber core according to an embodiment of the present invention;

fig. 14 is a schematic perspective view of a male rubber core provided in an embodiment of the present invention;

fig. 15 is a first schematic perspective view of a female terminal according to an embodiment of the present invention;

fig. 16 is a second schematic perspective view of the female terminal according to the embodiment of the present invention;

fig. 17 is a third schematic perspective view of the female terminal provided in the embodiment of the present invention;

fig. 18 is a schematic front view of a conductive elastic sheet according to an embodiment of the present invention;

fig. 19 is a schematic perspective view of a conductive elastic piece according to an embodiment of the present invention;

fig. 20 is a right side schematic view of a conductive elastic piece according to an embodiment of the present invention;

fig. 21 is a first assembly view of the female terminal according to the embodiment of the present invention;

fig. 22 is a second assembly view of the female terminal according to the embodiment of the present invention;

fig. 23 is a third schematic assembly view of the female terminal provided in the embodiment of the present invention;

fig. 24 is a fourth schematic assembly view of the female terminal provided in the embodiment of the present invention;

fig. 25 is a schematic perspective view of a master batch core provided in an embodiment of the present invention;

fig. 26 is an installation schematic view of a dust cap according to an embodiment of the present invention.

Wherein, in the figures, the respective reference numerals:

11-an upper shell; 111-a receiving cavity; 12-a plug; 121-a first male end; 122-a second male end; 123-a conductive connection; 13-core of male rubber; 131-a first assembly hole; 132-mounting holes; 151-bolt; 152-a nut seat; 2-a lower shell; 21-accommodating concave cavities; 211-a recess; 2111-a through hole; 212-card slot; 22-a masterbatch core; 221-a second assembly hole; 3-a female terminal; 31-a conductive base; 311-a first conductive sheet; 3111-a first base plate; 3112-a first side panel; 312 — a second conductive sheet; 3121-a second bottom panel; 3122-a second side panel; 32-a conductive spring; 321-a first mounting plate; 322-a second mounting plate; 323-tablet; 3231-first side surface; 3232-second side surface; 3233-buffer cavity; 3234-notch; 324-a receiving cavity; 3241-opening; 3251-convex column; 3252-locating holes; 33-rivets; 34-a boss; 35-reversing; 36-buckling position; 4-dust cover; 51-a handle; 511-a first runner; 5111-inlet; 5112-a reinforcement; 5113-a third stiffener; 52-a resilient plate; 521-a hook; 522-a first boss; 6-a pressing mechanism; 61-a second chute; 611-a strip-shaped groove; 6111-boss; 62-a slide plate; 621-a second boss; 622-hook body; 63-push plate; 64-clamping; 7-a pivot; 8-rod body.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1 to 26, a switch provided by the present invention will now be described. The switch comprises a lower shell 2 with a containing cavity 21, an upper shell 11 which is detachably covered on the lower shell 2 and is provided with a containing cavity 111, a plug 12 arranged in the containing cavity 111, and a female terminal 3 which is arranged in the containing cavity 21 and is matched with the plug 12; when the upper shell 11 is covered on the lower shell 2, the plug 12 is connected with the female terminal 3, and the upper shell 11 and the lower shell 2 enclose to form a closed space; a tensioning system for tensioning the upper housing 11 and the lower housing 2 is provided between the upper housing 11 and the lower housing 2.

Thus, when the upper shell 11 is folded on the lower shell 2, the plug 12 and the female terminal 3 are conducted, and current can pass through the plug 12 and the female terminal 3; when the upper shell 11 is separated from the lower shell 2, the plug 12 is disconnected with the female terminal 3, and the circuit is disconnected; the plug 12 is arranged in the accommodating cavity 111 of the upper shell 11, the female terminal 3 is arranged in the accommodating cavity 21 of the lower shell 2, and the upper shell 11 and the lower shell 2 reduce the influence of external dust/moisture on the plug 12 and the female terminal 3; the upper shell 11 is covered on the lower shell 2 to form a closed space (optionally, the closed space is a sealed space), and the plug 12 and the female terminal 3 are both positioned in the closed space, so that the influence of dust/moisture on the plug 12 and the female terminal 3 is reduced; through taut system tensioning between casing 2, ensured the fastness between last casing 11 and casing 2 down, avoid not hard up, reduced outside dust/moisture promptly and entered into in the airtight space that last casing 11 and casing 2 enclose down.

Further, referring to fig. 1 to 26, as an embodiment of the switch provided by the present invention, the tightening system includes a handle 51 pivotally connected to the upper housing 11 via a pivot 7, a first fastening assembly disposed between the upper housing 11 and the lower housing 2 for tightening the upper housing 11 on the lower housing 2, and a second fastening assembly disposed between the handle 51 and the lower housing 2 for fixing the handle 51 on the lower housing 2. In this manner, the user can conveniently open the upper case 11 by holding the handle 51; after the upper shell 11 and the lower shell 2 are closed, the upper shell 11 is fixed on the lower shell 2 through the first fastening assembly, so that the firmness between the upper shell 11 and the lower shell 2 is guaranteed; then, the handle 51 is fixed on the lower shell 2 through a second fastening component, so that the firmness of the handle 51 is guaranteed; and upper housing 11 is fixed on lower housing 2 through handle 51, has further promoted the fastness of connecting between upper housing 11 and the lower housing 2.

Further, referring to fig. 1 to 26, as a specific embodiment of the switch provided by the present invention, the first fastening component includes a first sliding slot 511 disposed on the handle 51 and a rod 8 disposed on the lower housing 2 and adapted to slide into the first sliding slot 511 and slide along the first sliding slot 511; one end of the first sliding groove 511 is an entrance 5111, and on a sliding path where the rod body 8 enters from the entrance 5111 of the first sliding groove 511 and slides along the first sliding groove 511, the distance from the pivot 7 is gradually reduced. Thus, after the upper housing 11 is covered on the lower housing 2, the rod 8 is first inserted into the inlet 5111 of the first sliding slot 511, and then the handle 51 is rotated around the pivot 7, so that the rod 8 can move along the first sliding slot 511; because on the body of rod 8 along the gliding sliding path of first spout 511, sliding path and pivot 7's distance reduce, have shortened the distance between pivot 7 and the body of rod 8 for body of rod 8 can compress tightly last casing 11 on lower casing 2 when sliding along first spout 511, has ensured the fastness between lower casing 2 and the last casing 11.

Further, in one embodiment, the first sliding slot 511 is a strip-shaped hole formed on the handle 51. So, the bar hole is easy to produce, and the body of rod 8 slides along the bar hole easily.

Further, in one embodiment, the rod 8 is inserted into the bar hole. So, the body of rod 8 wears to establish and is difficult to break away from in the bar-shaped hole and come out.

Further, in one embodiment, the diameter of the rod 8 is the same as the width of the slotted hole. So, the condition of rocking is difficult to appear when the body of rod 8 slides along bar shape hole.

Further, referring to fig. 1 to 26, as an embodiment of the switch provided by the present invention, the inner wall of the first sliding slot 511 has a concave position for the rod 8 to be inserted into, and the convex pivot 7 is provided on the inner wall. Thus, when the rod body 8 is clamped into the concave position, the rod body 8 can be positioned in the concave position, and the rod body 8 is prevented from sliding out along the first sliding groove 511; in addition, when the rod body 8 is clamped into the concave position, the rod body 8 impacts the concave position to generate a sound, and a user can judge whether the rod body 8 is clamped into the concave position or not through the sound.

Further, in one embodiment, a reinforcing member 5112 is provided on the handle 51 outside the entrance 5111, and both ends of the reinforcing member 5112 are respectively connected to the handles 51 on both sides of the first sliding groove 511. As such, the reinforcement 5112 can reduce deformation at the entrance 5111 of the first chute 511.

Further, in one embodiment, the edge of the first sliding groove 511 is provided with a third reinforcing rib 5113. Thus, the third reinforcing bead 5113 can reduce the deformation of the first chute 511 itself.

Further, referring to fig. 1 to 26, as a specific embodiment of the switch provided by the present invention, the second fastening assembly includes a latch 64 disposed on the lower housing 2 and an elastic plate 52 disposed on the handle 51; the elastic plate 52 is provided with a hook 521 for cooperating with the detent 64, and the handle 51 is provided with a pressing mechanism 6 for pressing the hook 521 hooked on the detent 64 toward the detent 64. Thus, the lower casing 2 is provided with the blocking position 64, the upper casing 11 is provided with the handle 51, and the handle 51 can rotate around the pivot 7; the handle 51 is provided with an elastic plate 52, the elastic plate 52 is provided with a hook 521, and after the hook 521 is clamped on the clamping position 64, the handle 51 is fixed; the pressing mechanism 6 presses the hook 521 to the position-locking portion 64, so that the firmness between the hook 521 and the position-locking portion 64 is greatly enhanced, and the handle 51 is prevented from loosening.

Optionally, in one embodiment, the flexible panel 52 is a plastic panel.

Optionally, in one embodiment, the detent 64 is a protrusion for hooking the hook 521. In another embodiment, the detent 64 is a first recessed space for the hook 521 to hook.

Further, referring to fig. 1 to 26, as a specific embodiment of the switch provided by the present invention, the pressing mechanism 6 includes a second sliding slot 61 provided on the handle 51, a sliding plate 62 and an elastic plate 52; the elastic plate 52 is arranged on the side wall of the second sliding chute 61, the elastic plate 52 is arranged at an interval relative to the bottom wall of the second sliding chute 61, and a slideway for the sliding plate 62 to slide is formed between the elastic plate 52 and the bottom wall of the second sliding chute 61; the elastic plate 52 is provided with a first protrusion 522 extending into the slideway, and the hook 521 and the sliding plate 62 are respectively located at two opposite sides of the elastic plate 52. In this way, a slide way is formed between the elastic plate 52 and the bottom wall of the second slide groove 61, the sliding plate 62 slides in the slide way, and since the first protrusion 522 extends into the slide way, when the sliding plate 62 touches the first protrusion 522, the sliding plate 62 bends the elastic plate 52 toward the side of the hook 521 through the first protrusion 522, and the bent elastic plate 52 presses the hook 521 against the detent 64.

Further, in one embodiment, the sliding plate 62 is provided with a second protrusion 621 protruding toward the elastic plate 52. As such, the second protrusion 621 more easily contacts the first protrusion 522 and pushes the elastic plate 52 to bend.

Further, in one embodiment, a strip-shaped groove 611 is provided on the bottom wall of the second sliding chute 61, and a hook 622 for being caught in the strip-shaped groove 611 is provided on the sliding plate 62. In this way, the hook 622 prevents the sliding plate 62 from coming out of the slideway under the constraint of the strip-shaped groove 611.

Further, in one embodiment, the hook 622 has a second guide surface for guiding the hook 622 to slide along the bottom wall of the bar-shaped groove 611. In this way, when the sliding plate 62 carries the hook 622 along the strip-shaped groove 611, the second guiding surface can guide the hook 622 to slide.

Further, in one embodiment, a boss 6111 is disposed within the strip groove 611. Thus, when the hook 622 meets the boss 6111, the hook 622 can be limited; when the sliding plate 62 is detached, the hook 622 can slide out of the strip groove 611 through the boss 6111.

Further, in one embodiment, the sliding plate 62 is provided with a push plate 63 for pushing by a user. In this way, the user can easily push the sliding plate 62 to slide by the push plate 63.

Further, in one embodiment, the push plate 63 is perpendicular to the sliding direction of the slide plate 62. In this way, the user can easily push the push plate 63 to move when pushing the sliding plate 62.

Further, in one embodiment, the upper housing 11 is provided with a positioning groove, and the handle 51 is provided with a protruding portion; when the handle 51 is rotated to a predetermined angle, the protruding portion is engaged with the positioning groove and abuts against the inner wall of the positioning groove. Therefore, the handle 51 rotates through the pivot 7, when the handle 51 rotates to a preset angle, the protruding part is clamped in the positioning groove, and the positioning groove can play a good limiting effect on the protruding part and is not easy to damage; the convex part is firmly abutted against the inner wall of the positioning groove.

Further, in one embodiment, the upper shell 11 is provided with a first rib and a second rib which are arranged at intervals, and a positioning groove is formed between the first rib and the second rib. Therefore, the positioning groove formed by the convex ribs saves materials and reduces weight.

Further, in one embodiment, the detent is located on the top wall of the upper housing 11 and the pivot 7 is located on the side wall of the upper housing 11. Thus, the positioning groove is formed on the top wall, the production is easy, and the positioning groove can be distributed on the upper shell 11 under the condition of pressure, so that the positioning groove is not easy to damage; the pivot 7 is arranged on the side wall, so that the space occupation is reduced.

Further, in one embodiment, the second rib is connected to a first rib provided on the upper case 11. So, first strengthening rib can increase the intensity of the protruding muscle of second.

Further, in one embodiment, a second reinforcing rib provided on the handle 51 is connected to the protruding portion. Thus, the second reinforcing rib can increase the strength of the protruding portion.

Further, in one embodiment, the pivot 7 includes two shafts coaxially disposed; the two shafts are respectively located at two opposite ends of the upper housing 11, one end of the handle 51 is hinged on one shaft, and the other end of the handle 51 is hinged on the other shaft. In this way, the handle 51 distributes the external force of the rotation thereof by the two shafts, thereby facilitating the stability of the rotation of the handle 51.

Further, please refer to fig. 1 to 26, which are specific embodiments of the switch of the present invention, the switch further includes a dust cover 4; a guide mechanism for guiding the dust cover 4 to slide towards a preset direction so as to cover the lower shell 2 is arranged between the lower shell 2 and the dust cover 4; a buckle mechanism is arranged between the lower shell 2 and the dust cover 4; when the dust cover 4 is covered on the lower shell 2, the dust cover 4 is detachably clamped on the lower shell 2 through the buckle mechanism. In this way, when the output cable is electrically connected with the female terminal 3 through the lower housing 2, the dust cap 4 can effectively reduce the influence of dust/moisture on the connection; in the process that the dustproof cover 4 is covered on the lower shell 2, the dustproof cover 4 slides towards the preset direction under the guide of the guide mechanism and covers the lower shell 2, so that the difficulty of covering the dustproof cover 4 is reduced; the dust cover 4 is guided by the guide mechanism to keep a stable covering direction towards a preset direction, so that the difficulty in covering due to direction disorder in the covering process of the dust cover 4 is avoided, and the guide mechanism also avoids the wrong covering of the dust cover 4; after the dustproof cover 4 covers the lower shell 2, the buckle mechanism can prevent the dustproof cover 4 from loosening, and the disassembly is convenient.

Further, referring to fig. 1 to 26, as a specific embodiment of the switch provided by the present invention, the fastening mechanism includes a concave portion disposed on the outer side wall of the lower housing 2 and a convex portion disposed on the inner side wall of the dust-proof cover 4 and used for being fastened into the concave portion; the concave part is provided with a first inner wall which is a plane, the convex part is provided with a stopping outer wall which is a plane and is used for being abutted against the first inner wall, and the first inner wall is positioned on a moving path of the stopping outer wall when the dust cover 4 is detached. Thus, the dust-proof cover 4 is installed by only covering the dust-proof cover 4 on the lower shell 2 and clamping the convex part into the concave part; when the convex part is blocked in the concave part, if the dust cover 4 is to be detached, because the first inner wall on the concave part is positioned on the moving path of the stop outer wall on the convex part, the stop outer wall and the first inner wall which are planes respectively can be in close contact with each other, the first inner wall can effectively block the convex part, and the firmness of the dust cover 4 is improved.

Optionally, in one embodiment, the guide surface and the stop outer wall are connected by a transition surface having a curved surface. In this way, the guide surface guides the convex part to be clamped into the concave part, and the convex part is not easy to be clamped due to the cambered transition surface.

Alternatively, in one embodiment, in the detaching direction of the dust cover 4, the first inner wall and the stopper outer wall are perpendicular to the detaching direction, respectively. So, when dismantling shield 4, backstop outer wall butt back on first inner wall, shield 4 is difficult to dismantle and gets off, has promoted shield 4's fastness.

Optionally, in an embodiment, the recess further comprises a second inner wall, a third inner wall, and a fourth inner wall that are respectively planar; the first inner wall and the second inner wall are arranged in parallel; the first inner wall, the second inner wall, the third inner wall and the fourth inner wall enclose to form a concave part; the third inner wall and the fourth inner wall form a preset included angle. Thus, the first inner wall and the second inner wall which are parallel to each other are easy to process; the first inner wall and the second inner wall which are parallel to each other can facilitate the convex part to be limited between the first inner wall and the second inner wall; the first inner wall, the second inner wall, the third inner wall and the fourth inner wall which are respectively in a plane shape are convenient to process; the convex part is contacted with the first inner wall, the second inner wall, the third inner wall and the fourth inner wall, so that the convex part is not easy to scratch.

Optionally, in one embodiment, the dust cover 4 is provided with an injection molding hole. Thus, the dust cap 4 can be positioned through the injection molding hole during the injection molding of the convex part on the inner side of the dust cap 4.

Optionally, in one embodiment, the guide mechanism comprises a rib and a groove; the outer surface of the lower shell 2 is convexly provided with a convex strip extending along the preset direction, and a concave part of the inner wall of the dustproof cover 4 forms a groove matched with the convex strip; the edge of the bottom wall of the groove is provided with a notch 3234. Therefore, when the dust cover 4 is installed, the dust cover 4 is only required to be covered on the lower shell 2 towards the preset direction, the convex strips are clamped into the grooves, and the dust cover 4 is pushed towards the preset direction under the guidance of the convex strips, so that the installation is very convenient; the convex strips and the grooves are correspondingly matched with each other, so that the situation that the dust cover 4 is installed in a reversed mode is avoided; the bottom wall of the groove is provided with a notch 3234, and the notch 3234 can release the tension of the convex strip clamped in the groove, so that the dustproof cover 4 is more convenient to mount.

Optionally, in one embodiment, the notch 3234 extends in a predetermined direction. In this manner, the dust cap 4 is easily fitted over the lower case 2 in a predetermined direction.

Optionally, in one embodiment, the notch 3234 gradually increases in width in a predetermined direction. This allows the notch 3234 to relieve stress on the bottom wall of the groove when it is forced open by external forces.

Optionally, in one embodiment, the notch 3234 includes a left side wall that is planar, a right side wall that is planar, and a bottom side wall that is curved; the left, right and bottom side walls enclose a gap 3234. Thus, the curved bottom side wall is easy to recover when being deformed by tension.

Optionally, in an embodiment, the waterproof gasket further includes a waterproof sheet having elasticity, the waterproof sheet is provided with an assembly hole, the lower housing 2 is inserted into the assembly hole, and two side surfaces of the waterproof sheet are a first side surface and a second side surface respectively; a plurality of first concave parts are formed in the concave parts of the first side surface of the waterproof sheet, and a first water stopping convex rib is formed between any two adjacent first concave parts; the edge of the first side surface is annularly provided with a second water stop convex rib. Therefore, when a user clamps the waterproof sheet of the waterproof gasket between the lower shell 2 and the outer wall of the external device, the lower shell 2 can penetrate through the assembly hole to be electrically connected with the external device, and the cavity space of the first concave part can buffer the deformation of the waterproof sheet after being extruded, so that the waterproof sheet can keep the elasticity of the waterproof sheet after being extruded, the sealing performance is improved, and the moisture permeation is reduced; in addition, when a user clamps the waterproof sheet of the waterproof gasket between the lower shell 2 and the outer wall of the external equipment, the clamping force between the lower shell 2 and the outer wall of the external equipment is borne on the first water stop convex rib and the second water stop convex rib which have smaller stress surfaces; the pressure intensity between the first water stop convex rib and the outer wall of the lower shell 2/external equipment is increased, the waterproof sealing performance is improved, and the moisture permeation is reduced; in addition, the edge at first side has effectively been prevented moisture from permeating away from the edge of first side to the protruding muscle ring of second stagnant water is established.

Optionally, in one embodiment, the waterproof gasket is IPX to IPX waterproof grade.

Optionally, in an embodiment, the waterproof sheet is provided with a locking hole, and the first side surface is provided with a third water stop rib provided with a locking hole. So, screw or other fasteners pass the locking hole in order to fix casing 2 and external equipment down, and the ring is established the protruding muscle of third stagnant water around the locking hole and can prevent that the downthehole moisture of locking from passing the protruding muscle of third stagnant water and permeating other places from first side under clamping state.

Optionally, in an embodiment, a fourth water stop rib surrounding the locking hole is formed on the second side surface. Therefore, the lower shell 2 penetrates through the locking hole, and the fourth water stop convex rib annularly arranged around the locking hole can prevent water in the locking hole from penetrating to other places from one side of the second side face through the fourth water stop convex rib in the clamping state.

Optionally, in one embodiment, the waterproof sheet is an integrally molded piece made of silicone. Thus, the silica gel has good waterproof performance.

Optionally, in one embodiment, the waterproof sheet is an oil-permeable silicone member. Therefore, grease is added into the silica gel, so that the waterproof sheet is more firmly contacted with the lower shell 2 or external equipment in the installation and clamping processes.

Optionally, in an embodiment, a plurality of second concave portions, a fifth water stop rib, and a sixth water stop rib are formed on the second side surface; each first concave part is in surface symmetry with each second concave part respectively, and first stagnant water protruding muscle is in surface symmetry with fifth stagnant water protruding muscle, and second stagnant water protruding muscle is in surface symmetry with sixth stagnant water protruding muscle. Therefore, when the first side surface and the second side surface of the waterproof gasket are relatively extruded, the first side surface and the second side surface are stressed more uniformly.

Further, please refer to fig. 1 to 26, which are specific embodiments of the switch of the present invention, the switch further includes a male rubber core 13 detachably fixed on the inner wall of the accommodating cavity 111, and the number of the female terminals 3 is two; the plug 12 comprises a first male end 121 for mating with one female terminal 3, a second male end 122 for mating with the other female terminal 3, and a conductive connecting portion 123 connecting the first male end 121 and the second male end 122; the conductive connection 123 is confined between the male plastic core 13 and the inner wall of the receiving cavity 111. Therefore, after the upper shell 11 and the lower shell 2 are folded, the upper shell 11 can protect the plug 12 positioned in the accommodating cavity 111, the lower shell 2 can protect the female terminal 3 positioned in the accommodating cavity 21, looseness caused by interference of an external environment on the plug 12 or the female terminal 3 is avoided, and safety and reliability are improved; the current passes through one female terminal 3, the first male terminal 121 (optionally, the first male terminal 121 transmits the current to the second male terminal 122 through the conductive connecting part 123), the second male terminal 122, and the other female terminal 3 in sequence to form a current path, and if the current path is to be broken, the upper shell 11 is only required to be taken down from the lower shell 2 to separate the male terminal (male terminal: the first male terminal 121 and/or the second male terminal 122) from the female terminal 3; the conductive connecting part 123 is limited between the male rubber core 13 and the inner wall of the containing cavity 111, so that the conductive connecting part 123 is prevented from shaking everywhere, the shaking of the first male end 121/the second male end 122 is reduced, and the safety and the reliability are improved; first public end 121 passes through electrically conductive connecting portion 123 and is connected with second public end 122 for can reciprocal anchorage between first public end 121 and the second public end 122, reduce not hard up, promote security and reliability.

Further, in one embodiment, the first male end 121 is inserted into the first fitting hole 131 on the male rubber core 13, reducing the looseness of the first male end 121; the second male end 122 is inserted into another first assembling hole 131 on the male rubber core 13, so that the looseness of the second male end 122 is reduced.

Further, in one embodiment, the male plastic core 13 is snapped on the inner wall of the receiving cavity 111 by a snap mechanism. Thus, the male plastic core 13 is clamped on the inner wall of the receiving cavity 111 for easy installation and disassembly.

Further, in one embodiment, the snap mechanism comprises a convex portion provided on the male rubber core 13 and a concave portion provided on the inner wall of the housing cavity 111; the convex part is clamped in the concave part. Therefore, the male rubber core 13 can be clamped on the shell by clamping the convex part into the concave part, and the operation is very convenient.

Further, in one embodiment, the first fitting hole 131 has the same cross-section as the first male end 121; and/or the first fitting hole 131 has the same cross-section as the second male end 122. Thus, when the first male end 121 is inserted into the first assembling hole 131, the first male end 121 is not easy to shake; similarly, when the second male end 122 is inserted into the first assembling hole 131, the second male end 122 is not easy to shake.

Further, in one embodiment, a positioning column is disposed on an inner wall of the receiving cavity 111, and a hole body matched with the positioning column is formed on the male rubber core 13; the positioning column is inserted in the hole body. Therefore, the positioning column penetrates through the hole body to limit the position of the male rubber core 13, and plays a role in positioning the male rubber core 13.

Further, in one embodiment, the first male end 121 and the second male end 122 are respectively shaped as a flat plate and are parallel to each other. In this way, the first male end 121 and the second male end 122 can be simultaneously mated with other female terminals 3.

Further, in one embodiment, the first male end 121 is perpendicular to the conductive connection 123, and/or the second male end 122 is perpendicular to the conductive connection 123. Thus, when the first male end 121 is inserted into the female terminal 3, the first male end 121 is not easily bent; similarly, when the second male end 122 is inserted into the female terminal 3, the second male end 122 is not easily bent.

Further, referring to fig. 1 to 26, as a specific embodiment of the switch provided by the present invention, the switch further includes a bolt 151 and a nut seat 152 for being screwed with the bolt 151; a lock hole is formed in the conductive connecting part 123, a mounting hole 132 matched with the shape of the nut seat 152 is formed in the male rubber core 13, and the nut seat 152 is embedded in the mounting hole 132; the bolt 151 passes through the locking hole and is threadedly coupled to the nut holder 152. Thus, the first male end 121 and the second male end 122 are located on the conductive connecting portion 123, and when the first male end 121 or the second male end 122 is installed, the bolt 151 penetrates through a lock hole on the conductive connecting portion 123 and is in threaded connection with the nut seat 152 on the male rubber core 13; the nut seat 152 embedded in the mounting hole 132 can keep a firm connection with the male plastic core 13, and the first male end 121 is fixed on the nut seat 152 by the bolt 151, so that the connection of the first male end 121 and the male plastic core 13 is very firm.

Alternatively, the mounting holes 132 may be blind/porous.

Further, in one embodiment, the conductive connecting portion 123, the first male end 121 and the second male end 122 are integrally formed of copper.

Further, in one embodiment, the number of the first male ends 121 is two, and the number of the first fitting holes 131 is two; the two first male ends 121 correspond to the two first fitting holes 131 one to one.

Further, in one embodiment, the lock hole is located at a central region of the conductive connection portion 123. Thus, when the bolt 151 passes through the locking hole to fix the conductive connecting portion 123 on the male rubber core 13, the conductive connecting portion 123 is not easily deformed when the external force applied to the conductive connecting portion 123 is transmitted to the bolt 151 passing through the locking hole.

Further, in one embodiment, the first male end 121 is rectangular in cross-section. Thus, the processing is convenient.

Further, in one embodiment, the outer surface of the nut seat 152 is formed with a strip-shaped groove 611, and the inner wall of the mounting hole 132 is formed with a convex strip engaged with the strip-shaped groove 611. Thus, when the nut seat 152 is clamped in the mounting hole 132, the strip-shaped groove 611 and the raised strip are engaged, so that the nut seat 152 is not easy to slip in the mounting hole 132.

Further, in one embodiment, the first male end 121 and the second male end 122 are both flat. Thus, the first male end 121 and the second male end 122 in the shape of flat plates can be conveniently matched with the female terminal 3, and are easy to process and low in cost.

Further, in one embodiment, the thickness of the first male end 121 is the same as the thickness of the second male end 122. Thus, the processing is easy and the cost is low.

Further, in one embodiment, the inner side wall of the first male end 121 is smoothly connected with the inner side wall of the conductive connecting portion 123. Therefore, the inner side wall of the first male end 121 and the inner side wall of the conductive connecting portion 123 are easier to process, and the first male end 121 is easy to transmit to the conductive connecting portion 123 when deformed under the action of external force.

Further, in one embodiment, the inner side wall of the second male end 122 is smoothly connected with the inner side wall of the conductive connecting portion 123. Therefore, the inner side wall of the second male end 122 and the inner side wall of the conductive connecting portion 123 are easier to process, and the second male end 122 is easy to be transferred to the conductive connecting portion 123 when deformed under the action of external force.

Further, in one embodiment, the edge of the first male end 121 facing away from the conductive connection 123 has a chamfer, and/or the edge of the second male end 122 facing away from the conductive connection 123 has a chamfer. In this way, the first male end 121 is easier to insert into the female socket of the socket under the guidance of the chamfer, and similarly, the second male end 122 is easier to insert into the female socket of the socket under the guidance of the chamfer.

Further, in one embodiment, the first male end 121, the second male end 122 and the conductive connecting portion 123 are integrally formed.

Further, in one embodiment, the conductive connection part 123 is provided with a bolt 151 for fixing the conductive connection part 123 to the upper case 11. Thus, the male terminal can be conveniently mounted and dismounted by the bolt 151.

Further, in one embodiment, the bolt 151 is a screw. Thus, the screw fastening is very convenient.

Further, in one embodiment, each female terminal 3 includes a conductive housing 31 and a conductive spring piece 32 disposed on the conductive housing 31 and configured to contact with the first male terminal 121/the second male terminal 122.

Further, in one embodiment, the conductive base 31 includes a first conductive sheet 311 and a second conductive sheet 312; the first conductive sheet 311 includes a first bottom plate 3111 and a first side plate 3112 fixedly connected to each other, and the second conductive sheet 312 includes a second bottom plate 3121 and a second side plate 3122 fixedly connected to each other; the bottom surface of the second bottom plate 3121 abuts against the top surface of the first bottom plate 3111; the first side plate 3112 and the second side plate 3122 are spaced apart from each other and form a receiving cavity 324 having an opening 3241, and the conductive elastic piece 32 is disposed in the receiving cavity 324. Thus, the second bottom plate 3121 abuts against the first bottom plate 3111, and when the first bottom plate 3111 and the second bottom plate 3121 are squeezed, they are not easily separated from each other, and the first bottom plate 3111 and the second bottom plate 3121 share pressure with each other, so that they are not easily deformed; the conductive elastic piece 32 is accommodated in the accommodating cavity 324 formed between the first side plate 3112 and the second side plate 3122, and an external object (e.g., a male terminal) extends into the accommodating cavity 324 from the opening 3241 and can be in contact with the conductive elastic piece 32, so that the space occupied by the conductive elastic piece 32 is saved, and the first side plate 3112 and the second side plate 3122 protect the conductive elastic piece 32 from being affected by the external object.

Optionally, in one embodiment, the first side panel 3112 and the second side panel 3122 are fixedly connected.

Optionally, in one embodiment, the conductive dome 32 is secured to the first side panel 3112 or the second side panel 3122.

Optionally, in one embodiment, the first bottom panel 3111, the first side panel 3112, the second bottom panel 3121, the second side panel 3122, and the conductive dome 32 are all made of copper.

Further, in one embodiment, the first bottom plate 3111 is disposed perpendicular to the first side plate 3112. Thus, the first bottom plate 3111 and the first side plate 3112 are easier to bend; when the first side plate 3112 is subjected to a pushing/pulling force of the conductive elastic sheet 32 toward the first side plate 3112, the first side plate 3112 is not easily deformed during the process of supporting the first side plate 3112 by the first bottom plate 3111.

Further, in one embodiment, the first bottom plate 3111 is smoothly connected with the first side plate 3112. Thus, the first bottom plate 3111 and the first side plate 3112 are not broken during stress transmission.

Further, in one embodiment, the second bottom panel 3121 is disposed perpendicular to the second side panel 3122. Thus, the second bottom plate 3121 and the second side plate 3122 are easier to bend and form; when the second side plate 3122 is subjected to a pushing/pulling force of the conductive elastic sheet 32 toward the second side plate 3122, the second side plate 3122 is not easily deformed during the process of supporting the second side plate 3122 by the second base plate 3121.

Further, in one embodiment, the second bottom panel 3121 is smoothly connected with the second side panel 3122. Thus, the first bottom plate 3111 and the first side plate 3112 are not broken during stress transmission.

Further, in one embodiment, the first bottom plate 3111 has the same thickness as the second bottom plate 3121. In this way, the first bottom plate 3111 and the second bottom plate 3121 can maintain more uniform deformation when subjected to an external force.

Further, in one embodiment, the first side panel 3112 is the same thickness as the second side panel 3122. In this manner, the first side panel 3112 and the second side panel 3122 can maintain a more consistent deformation when subjected to external forces.

Further, in one embodiment, the first side plate 3112 is provided with a protruding pillar 3251, the second side plate 3122 is provided with a positioning hole 3252, and the protruding pillar 3251 is engaged in the positioning hole 3252. Thus, the convex pillar 3251 is engaged with the positioning hole 3252, so as to keep the relative position between the first side plate 3112 and the second side plate 3122 stable.

Further, in one embodiment, the cross-sections of the posts 3251 and the positioning holes 3252 are the same, and the cross-sections of the posts 3251 and the positioning holes 3252 are rectangular. Thus, the rectangular protruding pillar 3251 is engaged in the positioning hole 3252 and is not easy to rotate.

Further, in one embodiment, the first conductive sheet 311 and the second conductive sheet 312 are an integral member. Thus, the first conductive sheet 311 and the second conductive sheet 312 have stronger bending resistance.

Further, in one embodiment, the conductive elastic sheet 32 includes a first mounting plate 321, a second mounting plate 322 spaced apart from the first mounting plate 321, and a sheet body 323 located between the first mounting plate 321 and the second mounting plate 322, wherein one end of the sheet body 323 is connected to the first mounting plate 321, and the other end of the sheet body 323 is connected to the second mounting plate 322; blade 323 has first and second opposing side surfaces 3231, 3232, and blade 323 is raised toward first side surface 3231 to recess second side surface 3232 to form buffer cavity 3233. Therefore, the sheet body 323 can be very conveniently installed at a required position through the first installation plate 321 and the second installation plate 322, the first installation plate 321 and the second installation plate 322 provide support for the sheet body 323, external force applied to the sheet body 323 can be distributed to the first installation plate 321 and the second installation plate 322, and the sheet body 323 is easy to recover after being bent under the action of the external force; when an external object (external object: for example, male terminal of plug 12) contacts with sheet 323, since sheet 323 is in a raised state and second side surface 3232 is concavely formed with buffer concave cavity 3233, buffer concave cavity 3233 can release deformation of sheet 323, which is beneficial to shape recovery of sheet 323.

Further, in one embodiment, the first side surface 3231 is a curved surface. As such, blocking is less likely to occur when an external object comes into contact with the first side surface 3231.

Further, in one embodiment, notch 3234 is disposed on the sheet 323. Thus, the notch 3234 can release stress generated when the sheet body 323 is deformed, and the notch 3234 can also buffer deformation of the sheet body 323.

Further, in one embodiment, the first mounting plate 321, the second mounting plate 322, and the sheet 323 are integrally formed of copper. Thus, the copper has good conductive efficiency.

Further, in an embodiment, the conductive elastic sheet 32 is attached to the inner wall of the accommodating cavity 324, the conductive elastic sheet 32 is provided with a first through hole, the conductive base 31 is provided with a second through hole, and the rivet 33 sequentially penetrates through the first through hole and the second through hole to fixedly connect the conductive elastic sheet 32 and the conductive base 31. Therefore, the rivet 33 sequentially penetrates through the first through hole and the second through hole, and the rivet 33 fixes the conductive elastic sheet 32 on the conductive base body 31, so that the installation process is very convenient and fast, and meanwhile, the conductive elastic sheet 32 can be very firmly fixed on the conductive base body 31; the conductive elastic sheet 32 is attached to the inner wall of the accommodating cavity 324, and when an external object (such as a male terminal of the plug 12) is inserted into the accommodating cavity 324 from the opening 3241 and is in conductive contact with the conductive elastic sheet 32, the conductive elastic sheet 32 is pressed against the inner wall of the accommodating cavity 324, and the conductive elastic sheet 32 is not easy to move and loosen.

Further, in an embodiment, the conductive elastic sheet 32 includes a first mounting plate 321 attached to an inner wall of the receiving cavity 324 and a sheet body 323 disposed on the first mounting plate 321 and protruding into the receiving cavity 324, and each first through hole is opened on the first mounting plate 321. Thus, the first mounting plate 321 is attached to the inner wall of the accommodating cavity 324, so that the stability of the first mounting plate 321 and the conductive elastic sheet 32 relative to the inner wall of the accommodating cavity 324 is maintained; the protrusion of the plate 323 into the receiving cavity 324 facilitates contact with external objects inserted into the receiving cavity 324 through the opening 3241.

Further, in an embodiment, a concave portion 211 is disposed on the bottom wall of the receiving cavity 21, and the bottom end of the conductive base 31 is clamped in the concave portion 211. Thus, the female terminal 3 can be fixed on the conductive seat 31, and the conductive seat 31 provides support for the female terminal 3; the bottom end of the conductive base 31 is clamped in the recess 211, and when the conductive base 31 vibrates, the conductive base 31 is not easy to loosen under the limitation of the inner wall of the recess 211.

Further, in an embodiment, a through hole 2111 is formed in the bottom wall of the recess 211, and a screw is disposed on the conductive seat 31 and inserted into the through hole 2111. Thus, the external cable can be electrically connected with the conductive base 31 by a screw.

Further, in an embodiment, the conductive base 31 is provided with a protruding portion 34, a clamping groove 212 communicating with the recessed portion 211 is formed on the bottom wall of the receiving cavity 21 in a recessed manner, and the protruding portion 34 is clamped in the clamping groove 212. Therefore, the protruding portion 34 is clamped in the clamping groove 212, so that the conductive base 31 can be more firmly fixed in the accommodating cavity 21, and the shaking of the conductive base 31 is reduced.

Further, in one embodiment, the number of the protruding portions 34 and the number of the slots 212 are two, and there is a one-to-one correspondence between two protruding portions 34 and two slots 212. Thus, the two protrusions 34 and the two slots 212 can enhance the stability of the conductive base 31.

Further, in one embodiment, two protrusions 34 are respectively located at two opposite ends of the conductive base 31. Thus, the two protrusions 34 are respectively located at two opposite ends of the conductive base 31, and the two protrusions 34 can more evenly constrain the conductive base 31.

Further, in one embodiment, each of the lobes 34 is rectangular in cross-section. Thus, the protrusion 34 with a rectangular cross section and the slot 212 are not easy to rotate relatively when being matched.

Further, in one embodiment, the rubber-plastic composite material further comprises a master rubber core 22 inserted in the accommodating cavity 21; the conductive base 31 is clamped between the master rubber core 22 and the bottom wall of the accommodating cavity 21; the inner wall of the accommodating cavity 21 is provided with an inverted buckle 35, and the outer surface of the master rubber core 22 is provided with a buckle position 36 for the inverted buckle 35 to be hung. Thus, the conductive spring plate 32 is arranged on the conductive base 31, the masterbatch core 22 is inserted into the containing cavity 21, and the conductive base 31 is clamped and positioned by the masterbatch core 22 and the inner wall of the containing cavity 21 to reduce the looseness of the female terminal 3; in the process that the female rubber core 22 is inserted into the accommodating cavity 21, the reverse buckle 35 on the female rubber core 22 is hung on the buckle position 36 on the inner wall of the accommodating cavity 21, so that the female rubber core 22 is prevented from loosening, and the loosening of the female terminal 3 is further reduced.

Further, in one embodiment, the female rubber core 22 has a second fitting hole 221 opened therein, and the female terminal 3 is inserted into the second fitting hole 221. So, female terminal 3 wears to establish in second pilot hole 221, and second pilot hole 221 can carry on spacingly to female terminal 3, is favorable to female terminal 3's stability.

Further, in one embodiment, the conductive base 31 has a flat plate shape. Thus, the conductive base 31 is flat and facilitates the clamping between the mother rubber core 22 and the inner wall of the receiving cavity 21.

Further, in one embodiment, the conductive base 31 is perpendicular to the insertion direction of the mother rubber core 22. Therefore, the abutting force applied by the master rubber core 22 to the conductive base 31 is perpendicular to the conductive base 31, so that the occurrence of bending of the conductive base 31 is reduced.

Further, in one embodiment, the reverse buckle 35 is a convex part disposed on the inner wall of the receiving cavity 21, and the buckle position 36 is a concave part 211 formed by the concave of the outer surface of the female rubber core 22; the convex portion is caught in the concave portion 211. Therefore, the convex part is clamped in the concave part 211 to complete the positioning, which is very convenient.

Claims (10)

1. A switch, characterized in that: the connector comprises a lower shell with an accommodating cavity, an upper shell which is detachably covered on the lower shell and is provided with an accommodating cavity, a plug arranged in the accommodating cavity, and a female terminal which is arranged in the accommodating cavity and is matched with the plug; when the upper shell is covered on the lower shell, the plug is connected with the female terminal, and the upper shell and the lower shell enclose to form a closed space; and a tensioning system for tensioning the upper shell and the lower shell is arranged between the upper shell and the lower shell.

2. The switch of claim 1, wherein: the tightening system includes a handle pivotally coupled to the upper housing by a pivot, a first fastening assembly disposed between the upper housing and the lower housing for tightening the upper housing against the lower housing, and a second fastening assembly disposed between the handle and the lower housing for securing the handle to the lower housing.

3. The switch of claim 2, wherein: the first fastening assembly comprises a first sliding groove formed in the handle and a rod body arranged on the lower shell and used for sliding into the first sliding groove and sliding along the first sliding groove; one end of the first sliding groove is an inlet, and on a sliding path where the rod body enters from the inlet of the first sliding groove and slides along the first sliding groove, the distance between the sliding path and the pivot is gradually reduced.

4. The switch of claim 3, wherein: the inner wall of the first sliding groove is provided with a concave clamping position which is convex to the pivot and is used for the rod body to be clamped in.

5. The switch of claim 2, wherein: the second fastening component comprises a clamping position arranged on the lower shell and an elastic plate arranged on the handle; the elastic plate is provided with a clamping hook matched with the clamping position, and the handle is provided with a pressing mechanism for pressing the clamping hook hooked on the clamping position to the clamping position.

6. The switch of claim 5, wherein: the pressing mechanism comprises a second sliding groove, a sliding plate and an elastic plate which are arranged on the handle; the elastic plate is arranged on the side wall of the second sliding chute, the elastic plate is arranged at intervals relative to the bottom wall of the second sliding chute, and a slide way for the sliding plate to slide is formed between the elastic plate and the bottom wall of the second sliding chute; the elastic plate is provided with a first protruding part extending into the slideway, and the clamping hook and the sliding plate are respectively positioned at two opposite sides of the elastic plate.

7. The switch of any one of claims 1 to 5, wherein: the dust-proof cover is also included; a guide mechanism used for guiding the dust cover to slide towards a preset direction so as to cover the lower shell is arranged between the lower shell and the dust cover; a clamping mechanism is arranged between the lower shell and the dustproof cover; when the dustproof cover covers the lower shell, the dustproof cover is detachably clamped on the lower shell through the clamping mechanism.

8. The switch of claim 7, wherein: the clamping mechanism comprises a concave part arranged on the outer side wall of the lower shell and a convex part arranged on the inner side wall of the dustproof cover and used for being clamped in the concave part; the concave part is provided with a first inner wall which is a plane, the convex part is provided with a stopping outer wall which is a plane and is used for abutting against the first inner wall, and the first inner wall is positioned on a moving path of the stopping outer wall when the dust cover is detached.

9. The switch of any one of claims 1 to 5, wherein: the female terminal is detachably fixed on the inner wall of the containing cavity, and the number of the female terminals is two; the plug comprises a first male end matched with one female terminal, a second male end matched with the other female terminal and a conductive connecting part for connecting the first male end and the second male end; the conductive connecting part is limited between the male rubber core and the inner wall of the containing cavity.

10. The switch of claim 9, wherein: the nut seat is used for being in threaded connection with the bolt; the conductive connecting part is provided with a through hole, the male rubber core is provided with a mounting hole matched with the shape of the nut seat, and the nut seat is embedded in the mounting hole; the bolt penetrates through the through hole and is in threaded connection with the nut seat.

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