Explosion-proof transmission mechanism

Abstract

The application provides an explosion-proof transmission mechanism, comprising a base, a transmission component rotatably connected to the base, and a moving component movably connected to the base; the moving component comprises a transmission piece and an insulating piece; the transmission piece is provided with a transmission hole matched with the transmission component and a pressing protrusion formed along one end of the transmission piece; the insulating piece comprises a first insulating layer covering the inner wall of the transmission hole and a second insulating layer wrapping the surface of the pressing protrusion; and the inner wall of the first insulating layer away from the pressing protrusion direction is provided with a stepped portion. In the explosion-proof transmission mechanism, the contact of each component in movement is covered with an insulator, so that static electricity and sparks generated by the movement of the transmission mechanism can be avoided, the service life and safety of the electronic equipment are improved, and the explosion-proof transmission mechanism can be better applied to industrial production operation sites with explosion-proof requirements.

Description

Technical Field

[0001] This invention belongs to the field of electronic equipment, and particularly relates to an explosion-proof transmission mechanism. Background Technology

[0002] Chargers are essential electronic device accessories in daily life. With the continuous development of electronic information technology, portable electronic devices are also widely used in factories or various construction sites, such as large-scale operation sites like petrochemical plants, tunnel construction, and mining. Most factories and construction sites have harsh environments with large amounts of dust and flammable and explosive gases.

[0003] To facilitate charging operations, technicians have applied traditional mechanical transmission mechanisms to control the connection and disconnection of circuits in electronic devices and their chargers. However, the components in these transmission mechanisms are still mostly made of a single metal material, which can generate static electricity or sparks during operation. This makes them unsuitable for use in factories and construction sites with explosion-proof requirements. On the one hand, this significantly impacts the safety, reliability, and lifespan of electronic devices; on the other hand, it poses a great threat to workplace safety. Summary of the Invention

[0004] The technical problem to be solved by this invention is to provide an explosion-proof transmission mechanism, which aims to solve the problem of static electricity and sparks generated in the transmission mechanism of electronic device chargers in explosion-proof environments, affecting the safety of electronic devices and production operations.

[0005] To solve the above-mentioned technical problems, the present invention is implemented as follows: an explosion-proof transmission mechanism, characterized in that it comprises: a base, a transmission component rotatably connected to the base, and a moving component movably connected to the base; The moving component includes a transmission component and an insulating component. The transmission component is provided with a transmission hole that matches the transmission component and a pressing protrusion extending along one end of the transmission component. The insulating component includes a first insulating layer covering the inner wall of the transmission hole and a second insulating layer wrapping the surface of the pressing protrusion. The first insulating layer has a stepped portion protruding from its inner wall away from the direction of the pressing protrusion.

[0006] Furthermore, the stepped portion includes a plane and a transition surface connecting the plane to the adjacent inner wall of the first insulating layer. The plane extends toward the pressing protrusion and is perpendicular to the inner wall of the first insulating layer. The cross-section of the transition surface perpendicular to the axis of rotation of the transmission component is arc-shaped.

[0007] Furthermore, the transmission component includes a main shaft rotatably mounted on the base, an eccentric shaft connected to the main shaft, and a fixing plate connected between the main shaft and the eccentric shaft. The eccentric shaft matches the transmission hole and passes through the transmission hole. An insulating sheet is provided on the surface of the fixing plate opposite to the transmission hole, and the insulating sheet is rotatably connected to the base.

[0008] Furthermore, the explosion-proof transmission mechanism also includes a limiting member rotatably connected to the base. The limiting member has a limiting groove that matches the transmission component. The transmission component passes through the transmission hole and the limiting groove in sequence. The tail end of the transmission component abuts against the inner wall of the limiting groove. The inner wall of the limiting groove is covered with a fourth insulating layer.

[0009] Furthermore, the transmission component is provided with a plurality of fixing grooves extending from the transmission hole to the pressing protrusion, and the insulating component also includes an insulating fixing component that matches the fixing grooves, and the first insulating layer, the insulating fixing component and the second insulating layer are connected as a whole.

[0010] Furthermore, the insulating member also includes a third insulating layer disposed at one end of the transmission member relative to the pressing protrusion. The third insulating layer extends in a direction away from the pressing protrusion and has a plurality of insulating protrusions. An installation space is formed between the insulating protrusions, and the installation space is used to connect the elastic member of the transmission mechanism.

[0011] Furthermore, the third insulating layer is provided with a plurality of insulating pillars, and the transmission component is provided with a plurality of connecting holes that match the insulating pillars. The connecting holes connect the transmission hole and the outer wall surface of the transmission hole, and the third insulating layer and the first insulating layer are connected as one unit through the insulating pillars.

[0012] Furthermore, the transmission component also includes an assembly arranged radially spaced from the transmission hole, and the insulating component also includes an insulating bracket that matches the assembly. One end of the insulating bracket is connected to the first insulating layer, and the assembly is used to assemble the charging switch.

[0013] Furthermore, the transmission component has a connecting groove formed by the recessed sidewall near the pressing protrusion; the insulating bracket includes a connecting part and a body, one end of the connecting part is connected to the first insulating layer and closely connected to the connecting groove on its periphery, and the other end of the connecting part away from the first insulating layer is integrally formed and connected to the body.

[0014] Furthermore, the assembly has a plurality of positioning blocks protruding axially along the transmission hole, the insulating bracket covers the positioning blocks, the insulating bracket extends from the surface of one positioning block to an adjacent positioning block to form an extension frame, and the insulating bracket and the extension frame on the surfaces of two adjacent positioning blocks form a through hole, the through hole being used to allow the connecting wire of the charging switch on the assembly to pass through.

[0015] Compared with the prior art, the explosion-proof transmission mechanism of this invention has the following advantages: the moving part includes a transmission component and an insulating component. The transmission component is provided with a transmission hole and a pressing protrusion extending along one end of the transmission component. The transmission component of the transmission mechanism rotates in the transmission hole, and friction is generated between the transmission component and the transmission hole. The pressing protrusion is used to connect with the corresponding electronic equipment, and friction is also generated during the contact process. At this time, the insulating component covers the inner wall of the transmission hole and wraps around the surface of the pressing protrusion. The insulating material covers the position of the transmission mechanism where electric sparks and wear are generated, which greatly improves the life and safety of the electronic equipment. Attached Figure Description

[0016] Figure 1 This is a partial structural schematic diagram of the moving component in an embodiment of the present invention; Figure 2 This is a schematic diagram of the transmission component from one perspective in an embodiment of the present invention; Figure 3 This is a schematic diagram of the transmission component from another perspective in an embodiment of the present invention; Figure 4 This is a front view of the transmission component in an embodiment of the present invention; Figure 5 This is a schematic diagram of the insulating component from one perspective in an embodiment of the present invention; Figure 6 This is a front view of the insulating component in an embodiment of the present invention; Figure 7 This is a schematic diagram of the overall structure of the explosion-proof transmission mechanism in an embodiment of the present invention; Figure 8 This is an exploded view of the overall structure of the explosion-proof transmission mechanism in an embodiment of the present invention; Figure 9 This is a partial exploded view of the explosion-proof transmission mechanism in an embodiment of the present invention; Figure 10 This is a partial structural schematic diagram of the transmission component in an embodiment of the present invention; Figure 11 This is a partial rear view of the transmission component in an embodiment of the present invention; Figure 12 This is a schematic diagram of the structure of the insulating sheet in an embodiment of the present invention; Figure 13 This is a rear view of the fixing piece in an embodiment of the present invention.

[0017] In the accompanying drawings, the reference numerals indicate: 10. Moving part; 110. Transmission component; 111. Transmission hole; 1111. Placement slot; 1112. Fixing slot; 1113. Connecting hole; 1114. Connecting groove; 112. Pressing protrusion; 1121. Positioning part; 1122. Extension part; 113. Assembly part; 1131. First assembly arm; 1132. Second assembly arm; 1133. Third assembly arm; 1134. Mounting slot; 1135. 120. Positioning block; 121. Insulating component; 121. First insulating layer; 1211. Stepped portion; 1211a. Plane; 1211b. Transition surface; 122. Second insulating layer; 123. Third insulating layer; 1231. Insulating post; 124. Insulating fastener; 125. Insulating protrusion; 126. Insulating bracket; 1261. Connecting part; 1262. Body; 1263. Positioning groove; 1264. Through hole; 20. Transmission component; 210. Main shaft; 220. Eccentric shaft; 221. First semicircular part; 222. Second semicircular part; 223. Limiting part; 230. Fixing plate; 240. Insulating plate; 241. Slider; 30. Triggering component; 40. Base; 410. Top cover; 411. Positioning post; 422. Mounting groove; 4221. Mounting hole; 423. Dust cover; 420. Front shell; 430. Rear shell; 440. Limiting structure; 441. Limiting slide groove; 50. Charging switch; 60. Elastic components; 70. Limiting component; 710. Fixing part; 711. First fixing cylinder; 712. Fixing nut; 713. Second fixing cylinder; 714. Fixing pin; 720. Movable part; 721. Fixing post; 7211. First fixing post; 7212. Second fixing post; 7213. Third fixing post; 722. Positioning post; 723. Connecting arm; 724. Limiting block; 7241. Limiting groove; 7242. Fourth insulating layer; 730. Key. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0019] Example: In this embodiment, please refer to Figure 1-13 An explosion-proof transmission mechanism includes: a base 40, a transmission component 20 rotatably connected to the base 40, and a moving component 10 movably connected to the base 40. The moving part 10 includes a transmission part 110 and an insulating part 120. The transmission part 110 is provided with a transmission hole 111 that matches the transmission part 20 and a pressing protrusion 112 extending along one end of the transmission part 110. The insulating part 120 includes 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 first insulating layer 121 has a stepped portion 1211 protruding from its inner wall away from the pressing protrusion 112.

[0020] Specifically, in this embodiment, such as Figure 7 and 8 As shown, the transmission mechanism also includes a triggering component 30 fixed to the transmission component 20, which drives the transmission component 20 to rotate. The base 40 includes a top cover 410, a front shell 420, and a rear shell 430, which together form a receiving cavity. The transmission component 20 and the moving component 10 are received in the receiving cavity, and the triggering component 30 is located outside the receiving cavity and is connected at one end to the transmission component 20.

[0021] like Figure 8 and 9 As shown, the top cover 410 of the base 40 protrudes towards the moving component 10 with two positioning posts 722411. The transmission component 110 is located between the two positioning posts 722411, and its opposite sides abut against the two positioning posts 722411. The positioning posts 722411 are used to restrict the horizontal movement of the moving component 10. The moving component 10 includes the transmission component 110 and an insulating component 120 formed on the transmission component 110. The transmission component 110, the transmission component 20, and the base 40 are all made of metal. Preferably, the insulating component 120 is made of rubber.

[0022] like Figure 1-6 and Figure 10As shown, the transmission component 20 includes a main shaft 210 rotatably mounted on the base 40 and an eccentric shaft 220 connected to and eccentrically disposed from the main shaft 210. The eccentric shaft 220 passes through the transmission hole 111 of the transmission component 110 and partially abuts against the transmission hole 111. The cross-section of the transmission hole 111 perpendicular to the axis of the main shaft 210 is rectangular, and the rectangle is rounded. The rounded corner design allows the insulating component 120 to better fit into the transmission component 110. The pressing protrusion 112 extends outward perpendicular to the outer wall of the transmission component 110. The pressing protrusion 112 includes a positioning part 1121 and an extension part 1122 connected in sequence. The projection of the extension part 1122 toward the transmission hole 111 is located inside the positioning part 1121, and the extension part 1122 gradually tapers away from the transmission hole 111. The pressing protrusion 112 is used to engage with the corresponding groove of the electronic device, thereby pressing the electronic device. Preferably, the thickness of the first insulating layer 121 gradually decreases near the edge of the transmission component 20, which can reduce the wear and tear between the transmission component 20 and the first insulating layer 121 during friction, and also reduce the noise of the transmission mechanism during operation.

[0023] The first insulating layer 121 covers the inner wall of the transmission hole 111. Preferably, the cross-section of the first insulating layer 121, with a length of L1, between the inner wall of the first insulating layer 121 near the pressing protrusion 112 and the two adjacent inner walls in the direction perpendicular to the axis of the main shaft 210, is rounded. The rounded corner is a quarter circle with a radius of R1. As an example, R1:L1=3:5, that is, the thickness of the first insulating layer 121 is the largest at the rounded corner. The second insulating layer 122 wraps around the extension 1122 of the pressing protrusion 112 and its edge abuts against the positioning part 1121. When the transmission mechanism is working, the inner wall of the transmission hole 111 rubs against the contact point of the transmission component 20. The first insulating layer 121, located between the transmission component 20 and the transmission element 110, can play an isolating role. On the one hand, it prevents the metal parts from generating electric sparks due to friction during the movement of the transmission mechanism, protecting the transmission mechanism and the electronic equipment matched with it, and improving the service life and safety of the electronic equipment. On the other hand, metal parts wear out quickly, and metal materials are expensive. Using rubber or other common insulating materials for the insulating element 120 can greatly reduce the cost of the transmission mechanism. The pressing protrusion 112 rubs repeatedly against the metal shell of the electronic equipment as the moving component 10 moves. The second insulating layer 122 can also protect the metal transmission component 110, preventing electric sparks from being generated by friction between the pressing protrusion 112 and the electronic equipment shell. In addition, the insulating element 120, made of polymer materials such as rubber, is elastic and can wrap the pressing protrusion 112 and be interference-fitted into the electronic equipment.

[0024] Furthermore, such as Figure 11 As shown, the outer contour of the cross-section of the eccentric shaft 220 of the transmission component 20 perpendicular to its axial direction is a closed ring with smooth edges, and the widest width direction of the cross-section is perpendicular to the radial direction of the main shaft 210.

[0025] The closed ring comprises two ellipses sharing a common principal diameter α, which is set along the widest width direction of the closed ring's cross-section. The minor axis β of the ellipse closer to the center of the principal axis 210 is shorter than the principal diameter α, and the major axis γ of the ellipse farther from the center of the principal axis 210 is greater than or equal to the principal diameter α, where β + γ < α. Preferably, 1 ≤ γ : α ≤ 1.2. As an example, β : α = 0.5, γ : α = 1.125. Accordingly, the eccentric shaft 220 includes a first semicircular portion 221 closer to the axis of the principal axis 210 and a second semicircular portion 222 farther from the axis of the principal axis 210. The stepped portion 1211 of the first insulating layer 121 and the side wall of the first insulating layer 121 adjacent to the stepped portion 1211 match the second semicircular portion 222 of the eccentric shaft 220. When the eccentric shaft 220 rotates 90° clockwise around 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 side wall adjacent to the stepped portion 1211.

[0026] The stepped portion 1211 of the first insulating layer 121 enables the moving part 10 to move the maximum distance when the transmission part 20 rotates the same distance.

[0027] Furthermore, such as Figure 6 As shown, the stepped portion 1211 includes a plane 1211a and a transition surface 1211b that connects from the plane 1211a to the inner wall of the adjacent first insulating layer 121. The plane 1211a extends toward the pressing protrusion 112 and is perpendicular to the inner wall of the first insulating layer 121. The cross-section of the transition surface 1211b perpendicular to the axis of rotation of the transmission component 20 is arc-shaped.

[0028] Specifically, in this embodiment, such as Figure 6 As shown, the cross section of the transition surface 1211b perpendicular to the axis of the main shaft 210 includes a circular arc and a curve connected in sequence with radius R2, R2:R1=2:1. The other end of the curve is connected to a 1 / 4 circle with radius R1. The circular arc with radius R2 in the inner part of the transition surface 1211b can intersect with the inner wall of the transmission hole 111 away from the pressing protrusion 112.

[0029] After the stepped portion 1211 and the eccentric shaft 220 rotate 90° clockwise around the main shaft 210 and are opposite each other, the plane 1211a extending towards the pressing protrusion 112 can increase the distance that the moving part 10 rises after the transmission component 20 rotates for the same stroke, which is more labor-saving and space-saving, reduces the volume of the transmission mechanism, and is better applied in electronic devices. The transition surface 1211b plays a role in limiting the rotation stroke of the transmission component 20, and the arc-shaped transition surface 1211b can reduce the noise and loss when the transmission component 20 rubs against the first insulating layer 121.

[0030] Furthermore, such as Figure 5 As shown, the thickness of the first insulating layer 121 gradually decreases near the edge of the transmission component 20. The transmission component 20 passes through the transmission hole 111 covering the first insulating layer 121. The gradual decrease in thickness of the first insulating layer 121 near the edge of the transmission component 20 can reduce the wear and tear during friction between the transmission component 20 and the first insulating layer 121. The rounded corner design of the transmission component 20 and the first insulating layer 121 can also enable the transmission mechanism to rotate better and reduce the noise during operation of the transmission mechanism.

[0031] Furthermore, the transmission component 20 also includes a fixing plate 230 connected between the main shaft 210 and the eccentric shaft 220. The eccentric shaft 220 matches the transmission hole 111 and passes through the transmission hole 111. An insulating plate 240 is provided on the surface of the fixing plate 230 facing away from the transmission hole 111. The insulating plate 240 is rotatably connected to the base 40.

[0032] Specifically, in this embodiment, such as Figure 12 and 13 As shown, the substrate 40 is provided with a limiting structure 440 that matches the insulating sheet 240. The insulating sheet 240 is rotatably connected to the limiting structure 440 in a clockwise direction around the main shaft 210. The limiting structure 440 is provided with three limiting grooves 441 in the clockwise direction of the insulating sheet 240's rotation around the main shaft 210. The insulating sheet 240 is provided with three sliders 241 that correspond to and match the limiting grooves 441. The width of the three limiting grooves 441 gradually decreases along the direction of movement of the insulating sheet 240. The sliders 241 are elastic, and the width of the sliders 241 in the radial direction of the main shaft 210 is greater than the minimum width of the limiting grooves 441. The insulating sheet 240 is provided with three sliders 241 evenly spaced corresponding to the grooves. The cross-section of the sliders 241 is hexagonal, and the opposite side walls of the hexagonal sliders 241 abut against the groove walls of the limiting grooves 441. The limiting structure 440 is fixedly connected to the base 40, and the insulating sheet 240, the main shaft 210 and the triggering component 30 are connected in sequence.

[0033] Applying an external force to the triggering component 30 can drive the insulating sheet 240 to rotate clockwise around the main shaft 210. The gradually narrowing limiting groove 441 allows the slider 241 to experience increasing pressure from the groove wall as it rotates clockwise around the main shaft 210. Because the slider 241 is made of elastic insulating material, its width in the radial direction of the main shaft 210 is greater than the minimum width of the limiting groove 441, allowing it to move from the minimum width of one limiting groove 441 to the maximum width of the next. When the insulating sheet 240 rotates clockwise around the main shaft 210, the slider 241 abuts against the maximum width of the next limiting groove 441. Only when the triggering component 30 applies a force that allows the slider 241 to elastically deform and pass through the limiting groove 441 can the slider 241 return to its original limiting groove 441.

[0034] This configuration has two advantages. First, the transmission component 20 is rotatably connected to the base 40. The transmission component 20 contacts and rotates relative to the limiting structure 440 on the base 40 through the fixing plate 230 on the transmission component 20. The insulating plate 240 is disposed at the rotatable connection between the transmission component 20 and the base 40, which are both made of metal. This avoids the generation of static electricity and sparks by friction between the transmission component 20 and the base 40, which are both made of metal. This improves the safety of electronic equipment using explosion-proof transmission mechanisms, extends the life of the explosion-proof transmission mechanism, and makes it more suitable for explosion-proof working environments. Second, the insulating plate 240 is an elastic insulating material, which makes it easier to utilize its elastic properties to form a limiting elastic structure with the base 40.

[0035] Furthermore, the explosion-proof transmission mechanism also includes a limiting member 70 rotatably connected to the base 40. The limiting member 70 has a limiting groove 7241 that matches the transmission component 20. The transmission component 20 passes through the transmission hole 111 and the limiting groove 7241 in sequence. The tail end of the transmission component 20 abuts against the inner wall of the limiting groove 7241. The inner wall of the limiting groove 7241 is covered with a fourth insulating layer 7242.

[0036] Specifically, in this embodiment, such as Figure 8 and 9As shown, the limiting member 70 has a limiting groove 7241 that matches the eccentric shaft 220, and one end of the eccentric shaft 220 passes through the limiting groove 7241. The limiting member 70 is spaced apart 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 connected in sequence in the direction away from the main shaft 210 and a limiting part 223 passing through the limiting groove 7241. The opening of the limiting groove 7241 of the limiting member 70 can move closer to or away from the limiting part 223 of the eccentric shaft 220 by the rotation of the limiting member 70. The adjacent two sides of the limiting part 223 near the limiting groove 7241 abut against the inner wall of the limiting groove 7241. The projection of the limiting part 223 along the axis of the main shaft 210 is in the body 1262. The body 1262 abuts against the surface of the limiting member 70 facing the main shaft 210. This arrangement can limit the rotation of the transmission component 20.

[0037] When the limiting member 70 is rotated clockwise, the limiting groove 7241 approaches the eccentric shaft 220, and the eccentric shaft 220 abuts against the inner wall of the limiting groove 7241, and the transmission component 20 is in a locked state that restricts rotation. When the limiting member 70 is rotated clockwise, the limiting groove 7241 moves away from the eccentric shaft 220, and the transmission component 20 is in an unlocked state that allows rotation.

[0038] Furthermore, such as Figure 9 As shown, the limiting member 70 includes a fixed cylinder, a movable part 720 rotatably connected to the fixed cylinder, and a key 730 engaged with the movable part 720; the base 40 has a mounting hole 4221 that matches the fixed cylinder, the fixed cylinder passes through the mounting hole 4221 and is fixed to the base 40; the movable part 720 includes a fixed post 721 and a limiting block 724 spaced apart from the fixed post 721, the fixed post 721 passes 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 make the movable part 720 rotate around the axis of the fixed cylinder.

[0039] As an example, 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 that matches the limiting member 70. The base 40 also includes a dust cover 423 that matches the mounting groove 4221134 and is detachably connected to the mounting groove 4221134.

[0040] The limiting member 70 includes a fixed part 710 fixedly connected to the base 40, a movable part 720 rotatably connected to the fixed part 710, and a key 730 snapped into the movable part 720.

[0041] The fixing part 710 includes a fixing cylinder, a fixing nut 712, and a fixing pin 714. The fixing cylinder includes a first fixing cylinder 711 and a second fixing cylinder 713. The first fixing cylinder 711 passes through the mounting hole 4221, and the fixing nut 712 is screwed onto the cylinder wall of the first fixing cylinder 711 located within the receiving cavity. The second fixing cylinder 713 passes through the first fixing cylinder 711, and the first fixing cylinder 711 has a pin hole corresponding to the second fixing cylinder 713 that matches the fixing pin 714. The fixing pin 714 passes through the pin hole and is detachably connected to the second fixing cylinder 713. Through the above arrangement, the fixing part 710 is fixedly connected to the base 40.

[0042] The active part 720 includes a fixed cover, a fixed post 721, at least one positioning post 722411, a connecting arm 723, and a limiting block 724.

[0043] The fixing post 721 includes a first fixing post 7211721, a second fixing post 7212721 and a third fixing post 7213721 connected sequentially from the top cover 410 to the second fixing cylinder 713.

[0044] The first fixing post 7211721 passes through the mounting hole 4221, and the first fixing post 7211721 is provided with a snap-fit ​​groove that matches the key 730; The second fixing post 7212721 is located between the top cover 410 and the second fixing cylinder 713. The second fixing post 7212721 is provided with at least one positioning hole along the length extension direction. The positioning post 722411 passes through the positioning hole. As an example, the second fixing post 7212721 is provided with four positioning holes, and a corresponding positioning post 722411 is provided. The third fixing post 7213721 passes through the second fixing cylinder 713. One end of the connecting arm 723 abuts against the end of the first fixing cylinder 711 away from the top cover 410 and is screwed to the third fixing post 7213721. The other end of the connecting arm 723 is integrally connected to the limiting block 724. The limiting block 724 has openings at both ends. The fourth insulating layer 7242 covers the inner wall of the limiting block 724 and the opening of the limiting part 223 of the limiting block 724 away from the eccentric shaft 220. The fourth insulating layer 7242 and the limiting block 724 form a limiting groove 7241.

[0045] The fixed cover is correspondingly provided with the first fixed cylinder 711 and is snapped into the mounting groove 4221134. The key 730 is used to pass through the fixed cover and abut against the positioning post 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. Rotating the key 730 will allow the entire movable part 720 to rotate around the axis of the first fixed cylinder 711, so that the limiting groove 7241 of the movable part 720 moves away from the limiting part 223 of the eccentric shaft 220, or is sleeved on the limiting part 223 of the eccentric shaft 220.

[0046] The fourth insulating layer 7242 is used to cover the limiting groove 7241. An insulating protective layer is provided at the connection between the eccentric shaft 220 of the transmission component 20 and the limiting component 70. This layer can protect the electronic equipment and the transmission mechanism, avoid electrical sparks and metal friction damage to the transmission mechanism, and increase the service life of the transmission mechanism.

[0047] Furthermore, the transmission component 110 is provided with a plurality of fixing grooves 1112 extending from the transmission hole 111 to the pressing protrusion 112, and the insulating component 120 also includes an insulating fixing component 124 that matches the fixing grooves 1112. The first insulating layer 121, the insulating fixing component 124 and the second insulating layer 122 are connected as one unit.

[0048] Specifically, in this embodiment, such as Figures 1-5 As shown, four fixing grooves 1112 are symmetrically arranged on the transmission component 110. The fixing grooves 1112 extend from the side wall of the transmission hole 111 near the clamping assembly towards the positioning part 1121. The first insulating layer 121 and the second insulating layer 122 are connected as one unit by an insulating fastener 124. The fixing grooves 1112 are used to form the flow channel during the injection molding of the insulating component 120. The first insulating layer 121, the second insulating layer 122 and the insulating fastener 124 are injection molded as one unit. This arrangement allows the insulating component 120 to be mechanically engaged in the transmission component 110. Because the insulating material, such as rubber, is elastic, the symmetrically arranged insulating fasteners 124 can better fix the first insulating component 120 and the second insulating component 120 to the transmission component 110, further ensuring that the insulating component 120 is stably fixed between the transmission component 20 and the transmission component 110, protecting the electronic equipment and transmission mechanism, avoiding electrical sparks and metal friction damage to the transmission mechanism, and increasing the service life of the transmission mechanism.

[0049] Furthermore, the insulating member 120 also includes a third insulating layer 123 disposed at one end of the transmission member 110 relative to the pressing protrusion 112. The third insulating layer 123 extends in the direction away from the pressing protrusion 112 and has a plurality of insulating protrusions 125. An installation space is formed between the insulating protrusions 125. The installation space is used to connect the elastic member 60 of the transmission mechanism.

[0050] Specifically, in this embodiment, such as Figure 1 and 8 As shown, the transmission mechanism also includes an elastic element 60 with one end abutting against the third insulating layer 123, and the other end of the elastic element 60 connected to the top cover 410 of the base 40. The elastic element 60 is used to provide pressure toward the pressing protrusion 112. As an example, the elastic element 60 is a spring, and the transmission member 110 is recessed near the outer wall of the elastic element 60 in a direction away from the elastic element 60 to form a placement groove 1111 that matches the third insulating layer 123. The placement groove 1111 is open at both ends along the axial direction of the transmission hole 111.

[0051] The insulating protrusion 125 is a discontinuous annular protrusion that is completely symmetrical with the axis of symmetry of the third insulating member 120. An installation space is formed between the annular protrusions. The outer wall of the end of the elastic member 60 near the transmission hole 111 is interference-fitted with the inner wall of the insulating protrusion 125, thereby fixing the elastic member 60 in the installation space.

[0052] This design facilitates the disassembly and assembly of the spring component and the transmission component 110 in the transmission mechanism, and also provides a horizontal force for positioning the elastic component 60. When the transmission mechanism moves, the distance between the transmission component 110 and the top cover 410 of the base 40 shortens, and the elastic component 60 is located between the transmission component 110 and the top cover 410 of the base 40. The third insulating layer 123 is located between the transmission component 110 and the elastic component 60, effectively preventing static electricity and sparks from friction between the transmission component 110 and the elastic component 60, thus improving the safety of the electronic equipment. At the same time, it can reduce the wear of the metal transmission component 110 inside the transmission mechanism and extend the service life of the transmission mechanism.

[0053] In other embodiments, the inner wall of the insulating protrusion 125 may be provided with threads or snap-fit ​​strips for engaging the elastic member 60, or concave and convex dots may be added to the inner wall of the insulating protrusion 125 to increase the friction between the inner wall of the insulating protrusion 125 and the elastic member 60. In addition, the insulating protrusion 125 may also be a solid cylinder whose peripheral wall can be interference-fitted into the elastic member 60.

[0054] Furthermore, the third insulating layer 123 is provided with a plurality of insulating posts 1231, and the transmission component 110 is provided with a plurality of connecting holes 1113 that match the insulating posts 1231. The connecting holes 1113 connect the transmission hole 111 and the outer wall surface of the transmission hole 111. The third insulating layer 123 and the first insulating layer 121 are connected as one unit through the insulating posts 1231.

[0055] Specifically, in this embodiment, such as Figures 1-5As shown, four insulating pillars 1231 are arranged in an array in the direction of the transmission hole 111 of the third insulating layer 123. The insulating pillars 1231 are sealed through the connection hole 1113. The two ends of the insulating pillars 1231 are integrally formed and connected to the third insulating layer 123 and the first insulating layer 121, respectively. The connection hole 1113 is used to form the flow channel for the injection molding of the first insulating layer 121 and the third insulating layer 123. By providing the connection hole 1113, the first insulating layer 121 near the side of the elastic member 60 and the third insulating layer 123 can be injection molded integrally and tightly attached to the transmission member 110. The insulating post 1231 serves to fix the first insulating layer 121 and the third insulating layer 123, making the structure of the moving part 10 composed of the transmission member 110 and the insulating member 120 more stable. When the transmission mechanism moves, the insulating member 120 on the surface of the transmission member 110 will not fall off the transmission member 110 as the parts in contact with it move. Furthermore, the insulating member 120 can effectively isolate the transmission member 110 from other metal parts, avoid friction to generate sparks and static electricity, improve the safety of electronic equipment during use, and also reduce metal wear between the components of the transmission mechanism, extending the life of the transmission mechanism.

[0056] Furthermore, the transmission component 110 also includes a mounting part 113 that is radially spaced from the transmission hole 111, and the insulating component 120 also includes an insulating bracket 126 that matches the mounting part 113. One end of the insulating bracket 126 is connected to the first insulating layer 121. The mounting part 113 is used to assemble the charging switch 50.

[0057] Specifically, in this embodiment, such as Figures 1-5 and Figure 8 As shown, the assembly 113 is used to install the charging switch 50. The assembly 113 includes a first assembly arm 1131, a second assembly arm 1132, and a third assembly arm 1133 connected in sequence. 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 grooves 4221134 that match the charging switch 50. The charging switch 50 is connected to the first assembly arm 1131 and the third assembly arm 1133 by screws at both ends of the mounting grooves 4221134. The assembly 113 is used to make the charging switch 50 move linearly with the transmission component 110. The charging switch 50 is a push-button switch. The base 40 has an opening corresponding to the projection of the charging switch 50 in the linear movement direction. The pressing part of the charging switch 50 protrudes from the opening. The insulating bracket 126 here can increase the overall mechanical strength of the moving part 10, making the connection between the transmission part 110 and the assembly 113 more robust. At the same time, it can also prevent leakage current from the charging switch 50 from being conducted to the entire transmission part 110 through the metal assembly 113, further improving the safety of the electronic device during use.

[0058] Furthermore, the transmission component 110 has a recessed sidewall near the pressing protrusion 112 to form a connecting groove 1114; the insulating bracket 126 includes a connecting part 1261 and a body 1262, one end of the connecting part 1261 is connected to the first insulating layer 121 and is closely connected to the connecting groove 1114 on its periphery, and the other end of the connecting part 1261 away from the first insulating layer 121 is integrally formed and connected to the body 1262.

[0059] Specifically, in this embodiment, such as Figure 1-5 As shown, the connecting groove 1114 is used to form the flow channel for the injection molding of the insulating component 120. The insulating bracket 126 is integrated with the first insulating layer 121. This arrangement allows the insulating components 120 to be distributed crosswise at different parts of the transmission component 110. The connection part 1261 between the assembly 113 and the transmission component 110 can be further fixed by the insulating bracket 126. Compared with ordinary assembly 113, the assembly 113 with the insulating bracket 126 increases the overall mechanical strength of the transmission component 110, thereby increasing the overall mechanical strength of the moving part 10. By using the insulating component 120, static electricity and sparks generated by the movement of the transmission mechanism are reduced. At the same time, the physical properties of the two different materials, the insulating component 120 and the transmission component 110, can be used to mechanically reinforce the overall transmission mechanism and improve the life of the moving part 10.

[0060] Furthermore, the assembly 113 has multiple positioning blocks 1135 protruding axially along the transmission hole 111. An insulating bracket 126 covers the positioning blocks 1135. The insulating bracket 126 extends from the surface of one positioning block 1135 to another adjacent positioning block 1135 to form an extension frame. The insulating bracket 126 on the surface of two adjacent positioning blocks 1135 and the extension frame enclose each other to form a through hole 1264. The through hole 1264 is used to allow the connecting wire of the charging switch 50 on the assembly 113 to pass through.

[0061] Specifically, in this embodiment, such as Figures 1-5As shown, the second mounting arm 1132 of the assembly 113 protrudes from the side opposite to the charging switch 50 with two positioning blocks 1135. The body 1262 of the insulating bracket 126 has positioning grooves 1263 that match the positioning blocks 1135. The insulating bracket 126 extends from one positioning groove 1263 to an adjacent positioning groove 1263 to form an extension frame. The extension frame and the other positioning groove 1263 are spaced apart to allow the connecting wire of the charging switch 50 to pass through. 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 durability of the moving part 10, and increase the life of the moving part 10. On the other hand, the through hole 1264 formed by the adjacent two positioning grooves 1263 of the insulating bracket 126 and the extension frame is made of insulating material. While allowing the connecting wire of the charging switch 50 to be neatly routed, it can also prevent the live connecting wire from leaking electricity through the metal assembly part, ensuring the safety of the user.

[0062] In other embodiments, the positioning block 1135 may protrude from the surface of the assembly 113 except in any direction toward the assembly charging switch 50.

[0063] Furthermore, as shown in the figure, the transmission component 110 is a one-piece molded metal component, and the insulating component 120 is integrally injection molded and connected to the transmission component 110.

[0064] Specifically, in this embodiment, the transmission component 110 and the insulating component 120 are molded in two colors. After the transmission component 110 is die-cast, the insulating component 120 is injection molded. The injection-molded insulating component 120 can be stably connected to the transmission component 110 as one unit, which increases the mechanical strength of the moving part 10.

[0065] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An explosion-proof transmission mechanism, characterized in that, include: A base, a transmission component rotatably connected to the base, and a moving component movably connected to the base; The moving component includes a transmission component and an insulating component. The transmission component is provided with a transmission hole that matches the transmission component and a pressing protrusion extending along one end of the transmission component. The insulating component includes a first insulating layer covering the inner wall of the transmission hole and a second insulating layer wrapping the surface of the pressing protrusion. The inner wall of the first insulating layer protrudes with a stepped portion away from the pressing protrusion direction. The stepped portion includes a plane and a transition surface connecting the plane to the adjacent inner wall of the first insulating layer. The plane extends toward the pressing protrusion direction and is perpendicular to the inner wall of the first insulating layer. The cross-section of the transition surface perpendicular to the axis of rotation of the transmission component is arc-shaped. The transmission component includes a main shaft rotatably mounted on the base, an eccentric shaft connected to the main shaft, and a fixing plate connected between the main shaft and the eccentric shaft. The eccentric shaft matches the transmission hole and passes through the transmission hole. An insulating sheet is provided on the surface of the fixing plate opposite to the transmission hole. The insulating sheet is rotatably connected to the base. The transmission component is provided with a plurality of fixing grooves extending from the transmission hole to the pressing protrusion, and the insulating component further includes an insulating fixing component that matches the fixing grooves. The first insulating layer, the insulating fixing component and the second insulating layer are connected as a whole.

2. The explosion-proof transmission mechanism according to claim 1, characterized in that, The explosion-proof transmission mechanism further includes a limiting member rotatably connected to the base. The limiting member has a limiting groove that matches the transmission component. The transmission component passes through the transmission hole and the limiting groove in sequence. The tail end of the transmission component abuts against the inner wall of the limiting groove. The inner wall of the limiting groove is covered with a fourth insulating layer.

3. The explosion-proof transmission mechanism according to claim 1, characterized in that, The insulating component further includes a third insulating layer disposed at one end of the transmission component relative to the pressing protrusion. The third insulating layer extends in a direction away from the pressing protrusion and has a plurality of insulating protrusions. An installation space is formed between the insulating protrusions, and the installation space is used to connect the elastic component of the transmission mechanism.

4. The explosion-proof transmission mechanism according to claim 3, characterized in that, The third insulating layer is provided with a plurality of insulating posts, and the transmission component is provided with a plurality of connecting holes that match the insulating posts. The connecting holes connect the transmission holes and the outer wall surface of the transmission holes. The third insulating layer and the first insulating layer are connected as one unit through the insulating posts.

5. The explosion-proof transmission mechanism according to claim 1, wherein The transmission component further includes an assembly that is radially spaced from the transmission hole, and the insulating component further includes an insulating bracket that matches the assembly. One end of the insulating bracket is connected to the first insulating layer, and the assembly is used to assemble a charging switch.

6. The explosion-proof transmission mechanism according to claim 5, characterized in that The transmission component has a recessed sidewall near the pressing protrusion to form a connecting groove; the insulating bracket includes a connecting part and a body, one end of the connecting part is connected to the first insulating layer and its periphery is closely connected to the connecting groove, and the other end of the connecting part away from the first insulating layer is integrally formed and connected to the body.

7. The explosion-proof transmission mechanism according to claim 5, wherein The assembly has multiple positioning blocks protruding axially along the transmission hole. The insulating bracket covers the positioning blocks and extends from the surface of one positioning block to an adjacent positioning block to form an extension frame. The insulating bracket and the extension frame on the surfaces of two adjacent positioning blocks form a through hole, which is used to allow the connecting wire of the charging switch on the assembly to pass through.

Images