CN117174507A - Explosion-proof drive mechanism - Google Patents

Abstract

The invention provides an explosion-proof transmission mechanism, which comprises: the device comprises a base body, a transmission part rotationally connected with the base body and a moving part movably connected with the base body; the movable part comprises a transmission part and an insulating part, the transmission part is provided with a transmission hole matched with the transmission part and a compression bulge formed by extending along one end of the transmission part, and the insulating part comprises a first insulating layer covered on the inner wall of the transmission hole and a second insulating layer wrapped on the surface of the compression bulge; the inner wall of the first insulating layer far away from the direction of the compaction protrusion is provided with a step part in a protruding way. The contact parts of all the parts in the anti-explosion transmission mechanism are covered with the insulators in the movement process, so that static electricity and sparks generated by the movement of the transmission mechanism can be avoided, the service life and the safety of electronic equipment are improved, and the anti-explosion transmission mechanism can be better applied to industrial production operation sites with anti-explosion requirements.

Description

Explosion-proof drive mechanism

Technical Field

The invention belongs to the field of electronic equipment, and particularly relates to an explosion-proof transmission mechanism.

Background

The charger is an indispensable electronic equipment accessory in daily life, and along with the continuous development of electronic information technology, the portable electronic equipment is also widely applied to factories or various construction sites, such as large-scale operation sites of petrochemical industry, tunnel construction, mining and the like. Most factories and construction sites have severe environments, and a large amount of dust and flammable and explosive gases exist.

To facilitate the charging operation, technicians apply conventional mechanical transmission mechanisms to the connection and disconnection of control circuits in electronic devices and their chargers. However, all parts of the related transmission mechanism are still made of single metal materials, static electricity or spark can be generated by friction in the movement process, and the transmission mechanism is difficult to apply to factories and construction sites with explosion-proof requirements, so that the safety, reliability and service life of electronic equipment are greatly influenced, and the safety of production and operation sites is greatly threatened.

Disclosure of Invention

The invention aims to solve the technical problem that the transmission mechanism of the charger of the electronic equipment generates static electricity and sparks in an explosion-proof occasion to influence the safety of the electronic equipment and the production operation.

In order to solve the technical problems, the invention is realized in such a way that an explosion-proof transmission mechanism is characterized by comprising: the device comprises a base body, a transmission part rotationally connected with the base body and a moving part movably connected with the base body;

the movable part comprises a transmission part and an insulating part, the transmission part is provided with a transmission hole matched with the transmission part and a compression bulge formed by extending along one end of the transmission part, and the insulating part comprises a first insulating layer covered on the inner wall of the transmission hole and a second insulating layer wrapped on the surface of the compression bulge;

the inner wall of the first insulating layer far away from the direction of the compaction protrusion is provided with a step part in a protruding mode.

Further, the step portion includes a plane and a transition surface connected from the plane to an adjacent inner wall of the first insulating layer, the plane extending toward the pressing projection direction and being perpendicular to the inner wall of the first insulating layer, and a cross section of the transition surface perpendicular to an axial direction in which the transmission member rotates is arc-shaped.

Further, the transmission part comprises a main shaft rotationally assembled on the base body, an eccentric shaft connected with the main shaft and a fixing piece connected between the main shaft and the eccentric shaft, the eccentric shaft is matched with the transmission hole and penetrates through the transmission hole, an insulating piece is arranged on the surface, deviating from the transmission hole, of the fixing piece, and the insulating piece is rotationally connected with the base body.

Further, the explosion-proof transmission mechanism further comprises a limiting part rotationally connected to the base body, a limiting groove matched with the transmission part is formed in the limiting part, the transmission part sequentially penetrates through the transmission hole and the limiting groove, the tail end of the transmission part is abutted to the inner wall of the limiting groove, and the inner wall of the limiting groove is covered with a fourth insulating layer.

Further, a plurality of fixing grooves extending from the transmission holes to the pressing protrusions are formed in the transmission piece, the insulation piece further comprises an insulation fixing piece matched with the fixing grooves, and the first insulation layer, the insulation fixing piece and the second insulation layer are connected into a whole.

Further, the insulating part further comprises a third insulating layer which is arranged at one end of the transmission part and corresponds to the pressing protrusion, a plurality of insulating protrusions extend towards the direction deviating from the pressing protrusion, an installation space is formed between the insulating protrusions, and the installation space is used for connecting an elastic part of the transmission mechanism.

Further, the third insulating layer is provided with a plurality of insulating columns, the driving medium be provided with insulating column assorted a plurality of connecting holes, the connecting hole intercommunication the transmission hole with the outer wall surface in transmission hole, the third insulating layer with first insulating layer passes through insulating column connects as an organic wholely.

Further, the transmission piece further comprises an assembly part arranged at radial intervals with the transmission hole, the insulation piece further comprises an insulation support matched with the assembly part, one end of the insulation support is connected to the first insulation layer, and the assembly part is used for assembling the charging switch.

Further, the side wall of the transmission piece, which is close to the pressing protrusion, is recessed to form a connecting groove; the insulating support includes connecting portion and body, connecting portion one end is connected in first insulating layer and week side close-fitting in the connection recess, the one end integrated into one piece of first insulating layer is kept away from to connecting portion connects in the body.

Further, the assembly part axially protrudes from the transmission hole to form a plurality of positioning blocks, the insulating support is coated outside the positioning blocks, the insulating support extends from one surface of the positioning block to the adjacent other positioning block to form an extending frame, a through hole is formed between the insulating support and the extending frame on the surfaces of the two adjacent positioning blocks in a surrounding mode, and the through hole is used for enabling a connecting wire of the charging switch on the assembly part to pass through.

Compared with the prior art, the explosion-proof transmission mechanism has the beneficial effects that: the moving part comprises a transmission part and an insulating part, the transmission part is provided with a transmission hole and a pressing protrusion formed by extending along one end of the transmission part, the transmission part of the transmission mechanism rotates in the transmission hole, the transmission part and the transmission hole generate friction, the pressing protrusion is used for being connected with corresponding electronic equipment, friction is generated in the contact process, at the moment, the insulating part covers the inner wall of the transmission hole and wraps the surface of the pressing protrusion, the transmission mechanism is provided with a position for generating electric spark and abrasion, the insulator is covered, and the service life and safety of the electronic equipment are greatly improved.

Drawings

FIG. 1 is a schematic view showing a part of the structure of a moving part in an embodiment of the present invention;

FIG. 2 is a schematic view of a perspective structure of a driving member according to an embodiment of the present invention;

FIG. 3 is a schematic view of another perspective structure of a driving member according to an embodiment of the present invention;

FIG. 4 is a front view of a transmission member in an embodiment of the invention;

FIG. 5 is a schematic view of an insulation element according to an embodiment of the present invention;

FIG. 6 is a front view of an insulator in an embodiment of the invention;

FIG. 7 is a schematic diagram of the overall structure of an explosion-proof transmission mechanism in an embodiment of the invention;

FIG. 8 is an exploded view of the overall construction of an explosion-proof transmission in an embodiment of the present invention;

FIG. 9 is an exploded view of a portion of the construction of an explosion-proof transmission mechanism in accordance with an embodiment of the present invention;

FIG. 10 is a schematic view of a portion of a transmission component in an embodiment of the invention;

FIG. 11 is a rear view of a portion of the structure of a transmission member in an embodiment of the present invention;

fig. 12 is a schematic view of the structure of an insulating sheet in the embodiment of the present invention;

fig. 13 is a rear view of the fixing sheet in the embodiment of the present invention.

In the drawings, each reference numeral denotes:

10. a moving member; 110. a transmission member; 111. a transmission hole; 1111. a placement groove; 1112. a fixing groove; 1113. a connection hole; 1114. a connection groove; 112. pressing the bulge; 1121. a positioning part; 1122. an extension; 113. a fitting; 1131. a first mounting arm; 1132. a second mounting arm; 1133. a third mounting arm; 1134. a mounting groove; 1135. a positioning block; 120. an insulating member; 121. a first insulating layer; 1211. a step part; 1211a, plane; 1211b, transition surface; 122. a second insulating layer; 123. a third insulating layer; 1231. an insulating column; 124. an insulating fixing member; 125. an insulating protrusion; 126. an insulating support; 1261. a connection part; 1262. a body; 1263. a positioning groove; 1264. a through hole;

20. a transmission member; 210. a main shaft; 220. an eccentric shaft; 221. a first semicircular portion; 222. a second semicircular portion; 223. a limit part; 230. a fixing piece; 240. an insulating sheet; 241. a slide block;

30. a trigger member;

40. a base; 410. a top cover; 411. positioning columns; 422. a mounting groove; 4221. a mounting hole; 423. a dust cover; 420. a front shell; 430. a rear case; 440. a limit structure; 441. limiting sliding grooves;

50. a charging switch;

60. an elastic member;

70. a limiting piece; 710. a fixing part; 711. a first fixed cylinder; 712. a fixing nut; 713. a second fixed cylinder; 714. a fixing pin; 720. a movable part; 721. fixing the column; 7211. a first fixing column; 7212. a second fixing column; 7213. a third fixing column; 722. positioning columns; 723. a connecting arm; 724. a limiting block; 7241. a limit groove; 7242. a fourth insulating layer; 730. a key.

Detailed Description

The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.

Examples:

in this embodiment, referring to fig. 1-13, an explosion-proof transmission mechanism includes: a base 40, a transmission member 20 rotatably coupled to the base 40, and a moving member 10 movably coupled to the base 40;

the moving part 10 comprises a transmission part 110 and an insulating part 120, wherein the transmission part 110 is provided with a transmission hole 111 matched with the transmission part 20 and a pressing protrusion 112 formed by extending along one end of the transmission part 110, and the insulating part 120 comprises a first insulating layer 121 covering the inner wall of the transmission hole 111 and a second insulating layer 122 wrapping the surface of the pressing protrusion 112;

the inner wall of the first insulating layer 121 in the direction away from the pressing projection 112 is projected with a stepped portion 1211.

Specifically, in this embodiment, as shown in fig. 7 and 8, the transmission mechanism further includes a trigger member 30 fixed to the transmission member 20, where the trigger member 30 is configured to drive the transmission member 20 to perform a rotational motion. The base body 40 includes a top cover 410, a front case 420 and a rear case 430, the top cover 410, the front case 420 and the rear case 430 enclose to form a housing cavity, the transmission component 20 and the moving component 10 are housed in the housing cavity, the triggering component 30 is located outside the housing cavity, and one end of the triggering component is connected to the transmission component 20.

As shown in fig. 8 and 9, the top cover 410 of the base 40 protrudes toward the moving member 10 with two positioning posts 722411, the transmission member 110 is located between the two positioning posts 722411, and opposite sides of the transmission member abut against the two positioning posts 722411, and the positioning posts 722411 are used for limiting the movement of the moving member 10 in the horizontal direction. The moving part 10 includes a transmission member 110 and an insulating member 120 over-molded on the transmission member 110. The transmission member 110, the transmission member 20 and the base 40 are all made of metal, and preferably the insulating member 120 is made of rubber.

As shown in fig. 1 to 6 and 10, the transmission member 20 includes a main shaft 210 rotatably assembled to the base body 40 and an eccentric shaft 220 connected to the main shaft 210 and eccentrically disposed with respect to the main shaft 210, the eccentric shaft 220 is disposed in a transmission hole 111 of the transmission member 110 in a penetrating manner and partially abuts against the transmission hole 111, a cross section of the transmission hole 111 perpendicular to an axial direction of the main shaft 210 is rectangular, and the rectangular is rounded. The rounded design enables the insulator 120 to better fit against the driver 110. The compressing protrusion 112 extends outwards perpendicular to the outer wall of the transmission member 110, the compressing protrusion 112 comprises a positioning portion 1121 and an extending portion 1122 which are sequentially connected, the projection of the extending portion 1122 in the direction towards the transmission hole 111 is located in the positioning portion 1121, the extending portion 1122 tapers in the direction away from the transmission hole 111, and the compressing protrusion 112 is used for being clamped in a groove corresponding to the electronic device to compress the electronic device. Preferably, the thickness of the first insulating layer 121 near the edge of the transmission member 20 is gradually reduced, so that the loss of the transmission member 20 and the first insulating layer 121 during friction can be reduced, and the noise of the transmission mechanism during operation can be reduced.

The first insulating layer 121 covers the inner wall of the transmission hole 111, preferably, a cross section between an inner wall of the first insulating layer 121, which is close to the pressing protrusion 112 and is a length L1, and two adjacent inner walls, which is perpendicular to the axial direction of the main shaft 210, is a rounded corner, and the rounded corner is a 1/4 circle with a radius R1, as an example, R1: l1=3:5, i.e. the thickness of the first insulating layer 121 is maximum at the corners. The second insulating layer 122 is wrapped around the extension portion 1122 of the pressing protrusion 112, and the edge of the second insulating layer abuts against the positioning portion 1121. When the transmission mechanism works, the abutting part of the inner wall of the transmission hole 111 and the transmission part 20 is rubbed, the first insulating layer 121 between the transmission part 20 and the transmission part 110 can play a role in isolation, on one hand, the electric spark generated by friction of parts made of metal materials in the motion of the transmission mechanism is avoided, the transmission mechanism and electronic equipment matched with the transmission mechanism are protected, the service life and safety of the electronic equipment are prolonged, on the other hand, the abrasion between the parts made of metal materials is faster, the cost of the metal materials is higher, and the cost of the transmission mechanism can be greatly reduced when the insulating part 120 uses rubber or other common insulating materials. The pressing protrusion 112 repeatedly rubs with the metal casing of the electronic device along with the movement of the moving part 10, and the second insulating layer 122 can also play a role in protecting the metal transmission member 110, so as to prevent electric spark generated by friction between the pressing protrusion 112 and the casing of the electronic device.

Further, as shown in fig. 11, the outer profile of the cross section of the eccentric shaft 220 of the transmission member 20 perpendicular to the axial direction thereof is a closed ring shape with smooth edges, and the widest width direction of the cross section is perpendicular to the radial direction of the main shaft 210.

The closed ring shape comprises two ellipses sharing a main diameter alpha, the main diameter alpha is arranged along the widest width direction of the closed ring shape cross section, the length of the minor axis beta of the ellipse close to the axis of the main shaft 210 is smaller than the main diameter alpha, and the major axis gamma of the ellipse far away from the axis of the main shaft 210210 is larger than or equal to the main diameter alpha, and beta+gamma < alpha. Preferably, 1.ltoreq.γ: alpha is less than or equal to 1.2. As an example, β: α=0.5, γ: α=1.125, and accordingly, the eccentric shaft 220 comprises a first semicircular portion 221 close to the axis of the main shaft 210 and a second semicircular portion 222 distant from the axis of the main shaft 210,

the stepped portion 1211 of the first insulating layer 121 and the sidewall of the first insulating layer 121 adjacent to the stepped portion 1211 are matched with the second semicircular portion 222 of the eccentric shaft 220, and when the eccentric shaft 220 rotates 90 ° around any one of the pins of the main shaft 210, the second semicircular portion 222 of the eccentric shaft 220 abuts against the stepped portion 1211 of the first insulating layer 121 and the sidewall adjacent to the stepped portion 1211.

The stepped portion 1211 of the first insulating layer 121 can maximize the moving distance of the moving member 10 when the driving member 20 rotates the same stroke.

Further, as shown in fig. 6, the step portion 1211 includes a plane 1211a and a transition surface 1211b connected from the plane 1211a to the adjacent inner wall of the first insulating layer 121, the plane 1211a extending toward the pressing projection 112 and being perpendicular to the inner wall of the first insulating layer 121, and a cross section of the transition surface 1211b perpendicular to the axial direction of rotation of the transmission member 20 being arc-shaped.

Specifically, in the present embodiment, as shown in fig. 6, a cross section of the transition surface 1211b perpendicular to the axial direction of the main shaft 210 includes an arc and a curve with a radius R2, which are connected in sequence: r1=2: 1, the other end of the curve is connected to a 1/4 circle with a radius R1, and a circle formed by a circular arc with a radius R2 in the transition surface 1211b can intersect with the inner wall of the transmission hole 111 far from the pressing protrusion 112.

The stepped portion 1211 is opposite to the eccentric shaft 220 after rotating 90 ° around the main shaft 210 in a time needle direction, and the plane 1211a extending toward the pressing protrusion 112 can increase the lifting distance of the moving member 10 after the same stroke of rotation of the driving member 20, so that more labor and space are saved, the volume of the driving mechanism is reduced, and the driving mechanism is better applied to electronic equipment, the transition surface 1211b plays a role in limiting the rotation stroke of the driving member 20 on one hand, and the transition surface 1211b with an arc-shaped cross section can reduce noise and loss when the driving member 20 rubs with the first insulating layer 121 on the other hand.

Further, as shown in fig. 5, the thickness of the first insulating layer 121 gradually decreases near the edge of the power transmission member 20. The transmission part 20 is arranged in the transmission hole 111 covering the first insulating layer 121 in a penetrating way, the thickness of the edge of the first insulating layer 121, which is close to the transmission part 20, is gradually reduced, so that the loss of the transmission part 20 and the first insulating layer 121 during friction can be reduced, the transmission part 20 and the first insulating layer 121 are correspondingly designed to be round corners, so that the transmission mechanism can perform rotary motion better, and the noise of the transmission mechanism during operation is reduced.

Further, the transmission component 20 further includes a fixing piece 230 connected between the main shaft 210 and the eccentric shaft 220, the eccentric shaft 220 is matched with the transmission hole 111 and is penetrated in the transmission hole 111, an insulating piece 240 is disposed on a surface of the fixing piece 230 facing away from the transmission hole 111, and the insulating piece 240 is rotatably connected to the base 40.

Specifically, in the present embodiment, as shown in fig. 12 and 13, the base 40 is provided with a limiting structure 440 matched with the insulating sheet 240, the insulating sheet 240 is rotationally connected to the limiting structure 440 in a direction of a time needle with the spindle 210 as an axial direction, the limiting structure 440 is provided with three limiting sliding grooves 441 in a direction of a time needle in which the insulating sheet 240 rotates around the spindle 210, the insulating sheet 240 is provided with three sliding blocks 241 correspondingly matched with the limiting sliding grooves 441, the three limiting sliding grooves 441 are gradually retracted along a moving direction of the insulating sheet 240, the sliding blocks 241 have elasticity, and a width of the sliding blocks 241 in a radial direction of the spindle 210 is larger than a minimum width of the limiting sliding grooves 441. The insulating sheet 240 is provided with three sliding blocks 241 corresponding to the sliding grooves at uniform intervals, the sections of the sliding blocks 241 are hexagonal, and two opposite side walls of the hexagonal sliding blocks 241 are abutted against the groove walls of the limiting sliding groove 441. The limiting structure 440 is fixedly connected to the base 40, and the insulating sheet 240, the main shaft 210 and the triggering member 30 are sequentially connected.

When an external force is applied to the triggering component 30 to drive the insulating sheet 240 to rotate in a direction of axial direction of the spindle 210, the limit sliding chute 441 with gradually-retracted width can enable the insulating sheet 240 to rotate in a direction of axial direction of the spindle 210, the sliding block 241 is subjected to gradually-increased extrusion force from the wall of the limit sliding chute 441, and since the sliding block 241 is made of an elastic insulating material, the width of the sliding block 241 in the radial direction of the spindle 210 is greater than the minimum width of the limit sliding chute 441, and the sliding block 241 can move from the minimum width of one limit sliding chute 441 to the maximum width of the next limit sliding chute 441. When the insulating sheet 240 rotates about the spindle 210 in the other axial direction, the slider 241 abuts against the maximum width of the next limit chute 441, and the slider 241 of the insulating sheet 240 can return to the original limit chute 441 only when a force is applied to the trigger member 30 to elastically deform the slider 241 to pass through the limit chute 441.

The arrangement is that, on one hand, the transmission part 20 is rotationally connected to the base body 40, wherein the transmission part 20 contacts with the limit structure 440 on the base body 40 through the fixing piece 230 on the transmission part 20 and rotates relative to the limit structure 440, and the insulating piece 240 is arranged at the rotationally connected position of the transmission part 20 and the base body 40, so that static electricity and spark generated by friction between the transmission part 20 and the base body 40 which are both made of metal materials are avoided, the safety of electronic equipment using an explosion-proof transmission mechanism is improved, the service life of the explosion-proof transmission mechanism is prolonged, and the explosion-proof transmission mechanism is more suitable for working occasions needing explosion prevention; on the other hand, the insulating sheet 240 is an insulating material having elasticity, and more conveniently uses the elastic characteristics thereof to form an elastic structure capable of limiting the position between the insulating sheet and the base 40.

Further, the explosion-proof transmission mechanism further comprises a limiting piece 70 rotatably connected to the base body 40, a limiting groove 7241 matched with the transmission component 20 is formed in the limiting piece 70, the transmission component 20 sequentially penetrates through the transmission hole 111 and the limiting groove 7241, the tail end of the transmission component 20 is abutted to the inner wall of the limiting groove 7241, and the inner wall of the limiting groove 7241 is covered with the fourth insulating layer 7242.

Specifically, in the present embodiment, as shown in fig. 8 and 9, the stopper 70 is provided with a stopper groove 7241 matching with the eccentric shaft 220, and one end of the eccentric shaft 220 is inserted into the stopper groove 7241. The limiting member 70 is spaced from the moving member 10, and the axis of rotation of the limiting member 70 is parallel to the direction of linear movement of the moving member 10. The eccentric shaft 220 includes a body 1262 and a limiting portion 223 penetrating the limiting groove 7241, which are sequentially connected in a direction away from the main shaft 210, and the opening of the limiting groove 7241 of the limiting member 70 can be close to or far from the limiting portion 223 of the eccentric shaft 220 by the rotation of the limiting member 70. Adjacent two side edges of the limiting part 223 close to the limiting groove 7241 are abutted against the limiting part 223 on the inner wall of the limiting groove 7241, and the projection of the limiting part along the axial direction of the main shaft 210 is in the body 1262, and the body 1262 is abutted against the surface of the limiting piece 70 on the side facing the main shaft 210, so that the rotation of the transmission part 20 can be limited.

The limiting piece 70 is rotated in the clockwise direction, the limiting groove 7241 is close to the eccentric shaft 220, the eccentric shaft 220 is abutted against the inner wall of the limiting groove 7241, the transmission part 20 is in a locking state for limiting rotation, the limiting piece 70 is rotated in the other clockwise direction, the limiting groove 7241 is far away from the eccentric shaft 220, and the transmission part 20 is in an unlocking state capable of rotating.

Further, as shown in fig. 9, the limiting member 70 includes a fixed cylinder, a movable portion 720 rotatably connected to the fixed cylinder, and a key 730 engaged with the movable portion 720; the base body 40 is provided with a mounting hole 4221 matched with a fixed cylinder, and the fixed cylinder is penetrated through the mounting hole 4221 and fixed on the base body 40; the movable part 720 comprises a fixed column 721 and a limiting block 724 which is arranged at intervals with the fixed column 721, the fixed column 721 penetrates through the fixed cylinder and rotates coaxially with the fixed cylinder, and the limiting block 724 is provided with a limiting groove 7241; the key 730 is used to rotate the movable portion 720 about the fixed spool.

Illustratively, the top cover 410 of the base 40 is recessed into the receiving cavity to form a mounting groove 4221134, the mounting groove 4221134 is provided with a mounting hole 4221 for mating with the stop 70, and the base 40 further includes a dust cover 423 for mating with the mounting groove 4221134 and removably attachable to the mounting groove 4221134.

The limiting member 70 includes a fixed portion 710 fixedly connected to the base 40, a movable portion 720 rotatably connected to the fixed portion 710, and a key 730 engaged with the movable portion 720.

The fixing portion 710 includes a fixing cylinder, a fixing nut 712, and a fixing pin 714, where the fixing cylinder includes a first fixing cylinder 711 and a second fixing cylinder 713, the first fixing cylinder 711 is disposed in the mounting hole 4221 in a penetrating manner, and the fixing nut 712 is disposed in a spiral manner on a cylinder wall of the first fixing cylinder 711 in the receiving cavity. The second fixing cylinder 713 is inserted into the first fixing cylinder 711, and a pin hole matching with the fixing pin 714 is formed at the position of the first fixing cylinder 711 corresponding to the second fixing cylinder 713, and the fixing pin 714 is inserted into the pin hole and detachably connected to the second fixing cylinder 713. The fixing portion 710 is fixedly coupled to the base 40 by the above arrangement.

The movable portion 720 includes a fixed cover, a fixed post 721, at least one positioning post 722411, a connection arm 723, and a stopper 724.

The fixing post 721 includes a first fixing post 7211721, a second fixing post 7212721, and a third fixing post 7213721 connected in sequence from the top cover 410 to the second fixing cylinder 713.

The first fixed column 7211721 is arranged in the mounting hole 4221 in a penetrating way, and a clamping groove matched with the lock key 730 is formed in the first fixed column 7211721;

the second fixing post 7212721 is located between the top cover 410 and the second fixing cylinder 713, and the second fixing post 7212721 is provided with at least one positioning hole along the length extending direction, the positioning post 722411 is penetrated in the positioning hole, and as an example, the second fixing post 7212721 is provided with four positioning holes, and correspondingly provided with one positioning post 722411;

the third fixed column 7213721 is arranged on the second fixed cylinder 713 in a penetrating way, one end of the connecting arm 723 is abutted to the end part, far away from the top cover 410, of the first fixed cylinder 711 and is connected with the third fixed column 7213721 by a screw, the other end of the connecting arm 723 is integrally connected with the limiting block 724, openings at two ends of the limiting block 724 are formed, the fourth insulating layer 7242 covers the inner wall of the limiting block 724 and the opening, far away from the eccentric shaft 220, of the limiting block 724, and the fourth insulating layer 7242 and the limiting block 724 form a limiting groove 7241.

The fixed cover is disposed corresponding to the first fixed cylinder 711 and is locked in the mounting groove 4221134, and the lock key 730 is used for penetrating into the fixed cover to abut against the positioning column 722411. When the key 730 is inserted, the positioning post 722411 abuts against the bottom of the positioning hole to prevent the key 730 from being inserted further, and the whole movable portion 720 can rotate around the axis of the first fixed cylinder 711 by rotating the key 730, so that the limiting groove 7241 of the movable portion 720 is far away from the limiting portion 223 of the eccentric shaft 220 or is sleeved on the limiting portion 223 of the eccentric shaft 220.

The fourth insulating layer 7242 is used for covering the limiting groove 7241, and a protective layer made of insulating materials is arranged at the joint of the eccentric shaft 220 of the transmission component 20 and the limiting piece 70, so that electronic equipment and a transmission mechanism can be protected, electric spark and metal friction loss of the transmission mechanism are avoided, and the service life of the transmission mechanism is prolonged.

Further, the transmission member 110 is provided with a plurality of fixing grooves 1112 extending from the transmission hole 111 to the pressing protrusions 112, the insulating member 120 further includes an insulating fixing member 124 matching with the fixing grooves 1112, and the first insulating layer 121, the insulating fixing member 124 and the second insulating layer 122 are integrally connected.

Specifically, in the present embodiment, as shown in fig. 1 to 5, four fixing grooves 1112 are symmetrically disposed on the transmission member 110, the fixing grooves 1112 extend from the side wall of the transmission hole 111 near the pressing assembly to the positioning portion 1121, and the first insulating layer 121 and the second insulating layer 122 are integrally connected through the insulating fixing member 124. The fixing groove 1112 is used for forming a runner when the insulating member 120 is injection molded, and the first insulating layer 121, the second insulating layer 122 and the insulating fixing member 124 are injection molded to form a whole. The insulating part 120 can be clamped in the transmission part 110 in a mechanical fit mode, because insulating materials such as rubber and the like are elastic, the insulating fixing parts 124 symmetrically arranged can better fix the first insulating part 120 and the second insulating part 120 on the transmission part 110, the insulating part 120 is further ensured to be stably fixed between the transmission part 20 and the transmission part 110, electronic equipment and a transmission mechanism are protected, electric spark and metal friction loss transmission mechanism are avoided, and the service life of the transmission mechanism is prolonged.

Further, the insulating member 120 further includes a third insulating layer 123 disposed at one end of the transmission member 110 opposite to the pressing protrusion 112, and a plurality of insulating protrusions 125 extend from the third insulating layer 123 in a direction away from the pressing protrusion 112, and an installation space is formed between the insulating protrusions 125, where the installation space is used for connecting the elastic member 60 of the transmission mechanism.

Specifically, in the present embodiment, as shown in fig. 1 and 8, the transmission mechanism further includes an elastic member 60 with one end abutting against the third insulating layer 123, the other end of the elastic member 60 is connected to the top cover 410 of the base 40, and the elastic member 60 is used for providing pressure towards the pressing protrusion 112. As an example, the elastic member 60 is a spring, and the driving member 110 is recessed near the outer wall of the elastic member 60 in a direction away from the elastic member 60 to form a placement groove 1111 matching the third insulating layer 123, and both ends of the placement groove 1111 in the axial direction of the driving hole 111 are opened.

The insulation protrusion 125 is a discontinuous annular protrusion completely symmetrical with the symmetry axis of the third insulation member 120, a mounting space is formed between the annular protrusions, an outer wall of one end of the elastic member 60, which is close to the transmission hole 111, is in interference fit with an inner wall of the insulation protrusion 125, and then the elastic member 60 is fixed in the mounting space.

By the arrangement, the spring piece and the transmission piece 110 in the transmission mechanism are convenient to detach, produce and install, and the horizontal force can be provided for the elastic piece 60 to position the elastic piece 60. When the transmission mechanism moves, the distance between the transmission member 110 and the top cover 410 of the base body 40 is shortened, the elastic member 60 is positioned between the transmission member 110 and the top cover 410 of the base body 40, and the third insulating layer 123 is positioned between the transmission member 110 and the elastic member 60, so that static electricity and spark generated by friction between the transmission member 110 and the elastic member 60 are effectively avoided, the safety of the electronic equipment is improved, meanwhile, the abrasion of the transmission member 110 made of metal materials inside the transmission mechanism can be reduced, and the service life of the transmission mechanism is prolonged.

In other embodiments, the inner wall of the insulation protrusion 125 may be provided with a thread or a clamping strip for clamping the elastic member 60, or concave-convex wave points are added on the inner wall of the insulation protrusion 125 to increase the friction between the inner wall of the insulation protrusion 125 and the elastic member 60, and in addition, the insulation protrusion 125 may be a solid cylinder with a peripheral wall capable of being inserted into the elastic member 60 in an interference manner.

Further, the third insulating layer 123 is provided with a plurality of insulating columns 1231, the transmission member 110 is provided with a plurality of connection holes 1113 matching the insulating columns 1231, the connection holes 1113 communicate the transmission holes 111 with the outer wall surfaces of the transmission holes 111, and the third insulating layer 123 and the first insulating layer 121 are integrally connected through the insulating columns 1231.

Specifically, in the present embodiment, as shown in fig. 1 to 5, four insulating columns 1231 are disposed on the third insulating layer 123 in an array towards the direction of the transmission hole 111, the insulating columns 1231 are sealed and pass through the connection hole 1113, two ends of the insulating columns 1231 are integrally connected to the third insulating layer 123 and the first insulating layer 121, and the connection hole 1113 is used for forming a runner formed by injection molding of the first insulating layer 121 and the third insulating layer 123. Through setting up connecting hole 1113, make first insulating layer 121 be close to one side and the third insulating layer 123 of elastic component 60 can the closely laminating of injection moulding in driving medium 110, insulating column 1231 has played the effect of fixed first insulating layer 121 and third insulating layer 123, make the moving part 10 structure that driving medium 110 and insulating component 120 are constituteed more firm, when the drive mechanism moves, the insulating component 120 of driving medium 110 surface can not drop in driving medium 110 along with the motion of the part that contacts with it, and further, can make insulating component 120 keep apart driving medium 110 and other metal material's part effectively, avoid the friction to produce spark and static, the security when having promoted electronic equipment and used, also can reduce the metal wearing and tearing between each subassembly of drive mechanism, extension drive mechanism's life-span.

Further, the transmission member 110 further includes a fitting 113 radially spaced from the transmission hole 111, the insulating member 120 further includes an insulating bracket 126 matched with the fitting 113, one end of the insulating bracket 126 is connected to the first insulating layer 121, and the fitting 113 is used for assembling the charging switch 50.

Specifically, in this embodiment, as shown in fig. 1 to 5 and 8, the assembly 113 is used for installing the charging switch 50, the assembly 113 includes a first assembly arm 1131, a second assembly arm 1132 and a third assembly arm 1133 that are sequentially connected, the first assembly arm 1131 is radially spaced from the transmission hole 111, the length extension direction of the second assembly arm 1132 is perpendicular to the length extension direction of the pressing protrusion 112, the first assembly arm 1131 and the third assembly arm 1133 are symmetrically provided with mounting slots 4221134 that are matched with the charging switch 50, and the charging switch 50 is connected to the first assembly arm 1131 and the third assembly arm 1133 through screws at two ends of the mounting slot 4221134. The assembly 113 is used for enabling the charging switch 50 to move along with the linear movement of the transmission member 110, the charging switch 50 is a push-type switch, the base body 40 corresponds to a projection position opening in the linear movement direction of the charging switch 50, and the push position of the charging switch 50 protrudes out of the opening. The insulating bracket 126 can increase the integral mechanical strength of the moving part 10, so that the joint of the transmission member 110 and the assembly member 113 is stronger, and meanwhile, the electric leakage of the charging switch 50 can be prevented from being conducted to the whole transmission member 110 through the metal assembly member 113, and the use safety of the electronic equipment is further improved.

Further, the driving member 110 is recessed near the side wall of the pressing protrusion 112 to form a connecting groove 1114; the insulating support 126 includes a connecting portion 1261 and a body 1262, wherein one end of the connecting portion 1261 is connected to the first insulating layer 121, and the circumference is closely connected to the connecting groove 1114, and one end of the connecting portion 1261, which is far away from the first insulating layer 121, is integrally formed and connected to the body 1262.

Specifically, in the present embodiment, as shown in fig. 1 to 5, the connecting grooves 1114 are used to form the flow channels of the injection molding of the insulator 120. The insulating support 126 is connected with the first insulating layer 121 into a whole, so that the insulating pieces 120 can be distributed at different positions of the transmission piece 110 in a crossing mode, the connecting part 1261 of the assembly part 113 and the transmission piece 110 can be further fixed through the insulating support 126, and compared with the common assembly part 113, the assembly part 113 provided with the insulating support 126 increases the integral mechanical strength of the transmission piece 110, and further increases the integral mechanical strength of the moving part 10. The insulation piece 120 reduces static electricity and spark generated by the motion of the transmission mechanism, and simultaneously, the physical characteristics of two different materials of the insulation piece 120 and the transmission piece 110 can be utilized to mechanically reinforce the whole transmission mechanism, so that the service life of the moving part 10 is prolonged.

Further, the assembly 113 axially protrudes from the transmission hole 111 to form a plurality of positioning blocks 1135, the insulating support 126 is wrapped around the positioning blocks 1135, the insulating support 126 extends from the surface of the positioning block 1135 to the adjacent other positioning block 1135 to form an extending frame, a through hole 1264 is formed between the insulating support 126 on the surface of the adjacent positioning blocks 1135 and the extending frame, and the through hole 1264 is used for allowing a connecting wire of the charging switch 50 on the assembly 113 to pass through.

Specifically, in the present embodiment, as shown in fig. 1 to 5, two positioning blocks 1135 protrude from a side of the second assembly arm 1132 of the assembly 113 facing away from the charging switch 50, and a body 1262 of the insulating bracket 126 has a positioning groove 1263 matching with the positioning blocks 1135. The insulating holder 126 extends from one positioning groove 1263 to the adjacent other positioning groove 1263 to form an extension frame, which is spaced apart from the other positioning groove 1263 by a distance for passing a connection wire of the charge switch 50. On the one hand, the positioning blocks 1135 and the positioning grooves 1263 can increase the overall assembly strength of the moving part 10, improve the restlessness of the moving part 10 and prolong the service life of the moving part 10; on the other hand, the through holes 1264 formed by surrounding the adjacent positioning grooves 1263 and the extension frame of the insulating bracket 126 are made of insulating materials, so that the electrified connecting wire can be prevented from leaking through the metal assembly part under the condition that the connecting wire of the charging switch 50 can be orderly routed, and the safety of a user is ensured.

In other embodiments, the locating block 1135 may protrude beyond the surface of the fitting 113 facing in either direction of the fitting charge switch 50.

Further, as shown in the figure, the transmission member 110 is a one-shot molded member made of metal, and the insulating member 120 is integrally injection-molded and connected to the transmission member 110.

Specifically, in the present embodiment, the transmission member 110 and the insulating member 120 are molded in two colors, wherein after the transmission member 110 is die-cast, the insulating member 120 is injection molded, and the injection molded insulating member 120 can be stably connected with the transmission member 110 as a whole, thereby increasing the mechanical strength of the moving member 10.

The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.

Claims (10)

1. An explosion-proof transmission mechanism, comprising: the device comprises a base body, a transmission part rotationally connected with the base body and a moving part movably connected with the base body;

the movable part comprises a transmission part and an insulating part, the transmission part is provided with a transmission hole matched with the transmission part and a compression bulge formed by extending along one end of the transmission part, and the insulating part comprises a first insulating layer covered on the inner wall of the transmission hole and a second insulating layer wrapped on the surface of the compression bulge;

the inner wall of the first insulating layer far away from the direction of the compaction protrusion is provided with a step part in a protruding mode.

2. The explosion-proof transmission mechanism according to claim 1, wherein the stepped portion includes a plane extending toward the pressing projection and perpendicular to the first insulating layer inner wall, and a transition surface connected from the plane to the adjacent first insulating layer inner wall, the transition surface being arc-shaped in cross section perpendicular to the axial direction of rotation of the transmission member.

3. The explosion-proof transmission mechanism according to claim 1, wherein the transmission component comprises a main shaft rotatably assembled on the base body, an eccentric shaft connected to the main shaft and a fixing piece connected between the main shaft and the eccentric shaft, the eccentric shaft is matched with the transmission hole and penetrates through the transmission hole, an insulating piece is arranged on the surface, facing away from the transmission hole, of the fixing piece, and the insulating piece is rotatably connected to the base body.

4. The explosion-proof transmission mechanism according to claim 1, further comprising a limiting piece rotatably connected to the base body, wherein a limiting groove matched with the transmission part is formed in the limiting piece, the transmission part sequentially penetrates through the transmission hole and the limiting groove, the tail end of the transmission part is abutted to the inner wall of the limiting groove, and the inner wall of the limiting groove is covered with a fourth insulating layer.

5. The explosion-proof transmission mechanism according to claim 1, wherein a plurality of fixing grooves extending from the transmission hole to the pressing protrusions are formed in the transmission member, the insulation member further comprises an insulation fixing member matched with the fixing grooves, and the first insulation layer, the insulation fixing member and the second insulation layer are integrally connected.

6. The explosion-proof transmission mechanism according to claim 1, wherein the insulating member further comprises a third insulating layer disposed at one end of the transmission member opposite to the pressing protrusion, the third insulating layer extends in a direction away from the pressing protrusion to form a plurality of insulating protrusions, and a mounting space is formed between the insulating protrusions, and is used for connecting with an elastic member of the transmission mechanism.

7. The explosion-proof transmission mechanism according to claim 6, wherein the third insulating layer is provided with a plurality of insulating columns, the transmission member is provided with a plurality of connecting holes matched with the insulating columns, the connecting holes are communicated with the outer wall surfaces of the transmission holes, and the third insulating layer and the first insulating layer are integrally connected through the insulating columns.

8. The explosion-proof transmission mechanism according to claim 1, wherein the transmission member further comprises an assembly member disposed radially spaced from the transmission hole, the insulating member further comprises an insulating bracket mated with the assembly member, one end of the insulating bracket is connected to the first insulating layer, and the assembly member is used for assembling the charging switch.

9. The explosion-proof transmission mechanism according to claim 8, wherein the transmission member is recessed near the side wall of the pressing projection to form a connection groove; the insulating support includes connecting portion and body, connecting portion one end is connected in first insulating layer and week side close-fitting in the connection recess, the one end integrated into one piece of first insulating layer is kept away from to connecting portion connects in the body.

10. The explosion-proof transmission mechanism according to claim 8, wherein the assembly part axially protrudes from the transmission hole to form a plurality of positioning blocks, the insulating support is coated outside the positioning blocks, the insulating support extends from one surface of the positioning blocks to the adjacent other positioning blocks to form an extending frame, a through hole is formed between the insulating support and the extending frame on the surfaces of the adjacent two positioning blocks in a surrounding manner, and the through hole is used for enabling a connecting wire of the charging switch on the assembly part to pass through.