CN117353415A - Transmission hold-down mechanism and charger - Google Patents

Abstract

The invention provides a transmission compressing mechanism and a charger, comprising: the shell is internally provided with a containing cavity; the transmission component is rotationally connected with the shell and accommodated in the accommodating cavity and comprises a main shaft and an eccentric shaft eccentrically arranged on the main shaft; the movable part is movably connected with the shell and partially protrudes out of the accommodating cavity; the moving component is provided with a transmission hole, the eccentric shaft penetrates through the transmission hole, and the moving component is used for moving linearly along with the rotation of the transmission component; the projection of the moving part in the linear moving direction is provided with a through hole, and the through hole is used for enabling the moving part to partially pass through the accommodating cavity; the first elastic piece is connected between the shell and the moving part and is used for providing force for preventing the moving part from moving linearly. The transmission part of the transmission pressing mechanism is simple in structure and small in size, the transmission structure can enable the moving part to reach the maximum moving distance in the shortest rotating stroke, and the operation is more labor-saving.

Description

Transmission hold-down mechanism and charger

Technical Field

The invention belongs to the field of electronic equipment, and particularly relates to a transmission pressing mechanism and a charger.

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. Therefore, a series of explosion-proof and dust-proof treatments are performed on the electronic device and the charger thereof by technicians, and most of the technicians need to fix the electronic device to a special charger and then dock and charge the charging interface of the electronic device with the charging interface of the charger.

However, the charger thus arranged often uses a complex mechanism to realize compaction and docking charging of the electronic device, which occupies a large volume and has complex operation steps, so that many workers in the operation site are difficult to rapidly charge the electronic device.

Disclosure of Invention

The invention aims to solve the technical problems that an explosion-proof charger is complex in charging operation and cannot be charged quickly through a small-size and simple-structure transmission pressing mechanism.

In order to solve the technical problems, the invention is realized in such a way that a transmission compressing mechanism comprises:

the shell is internally provided with a containing cavity;

the transmission component is rotationally connected with the shell and accommodated in the accommodating cavity, and comprises a main shaft and an eccentric shaft eccentrically arranged on the main shaft;

the movable part is movably connected with the shell and partially protrudes out of the accommodating cavity; the moving component is provided with a transmission hole, the eccentric shaft penetrates through the transmission hole, and the moving component is used for moving linearly along with the rotation of the transmission component; the casing is provided with a through hole at the projection of the moving part in the linear moving direction, and the through hole is used for enabling the moving part to partially pass through the accommodating cavity;

a first elastic member connected between the housing and the moving member, the first elastic member for providing a force to prevent the moving member from moving linearly;

the trigger component is connected with the transmission component and is used for driving the transmission component to rotate in a time needle direction by taking the main shaft as an axial direction.

Further, the moving part comprises a transmission part, a pressing protrusion is arranged at one end of the transmission part, opposite to the first elastic part, and the pressing protrusion penetrates through the through hole and protrudes out of the accommodating cavity.

Further, the transmission piece is provided with the transmission hole, and the side wall of the transmission hole is protruded with a step part matched with the eccentric shaft.

Further, the cross section external contour of the eccentric shaft perpendicular to the axial direction 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.

Further, the transmission compressing mechanism further comprises a limiting rebound part, and the limiting rebound part further comprises a first limiting structure fixed on the shell and a second limiting structure fixed on the transmission part;

the second limit structure takes the main shaft as an axial time needle direction to rotate and connect with the first limit structure, the first limit structure is provided with a plurality of limit sliding grooves with gradually-retracted width in the time needle direction of the rotation of the second limit structure around the main shaft, the second limit structure is provided with a plurality of sliding blocks matched with the limit sliding grooves, the sliding blocks have elasticity, and the width of the sliding blocks in the radial direction of the main shaft is larger than the minimum width of the limit sliding grooves.

Further, the limiting rebound member further comprises a second elastic member, two ends of the second elastic member are respectively connected with the first limiting structure and the second limiting structure, and the second elastic member is used for providing elastic force around the second limiting structure in the other clockwise direction of the main shaft.

Further, a plurality of limit sliding grooves are connected end to form a closed loop, the connecting parts of two adjacent limit sliding grooves form limit walls, and an included angle A between the limit walls and the side walls of the limit grooves is larger than 90 degrees and smaller than 150 degrees.

Further, the transmission compressing mechanism further comprises a limiting piece rotationally connected to the shell, a limiting groove matched with the eccentric shaft is formed in the limiting piece, one end of the eccentric shaft penetrates through the limiting groove, and the whole body of the eccentric shaft is abutted to the inner wall of the limiting groove.

Further, the limiting piece comprises a fixed cylinder, a movable part rotatably connected with the fixed cylinder and a key clamped with the movable part;

the shell is provided with a mounting hole matched with the fixed cylinder, and the fixed cylinder penetrates through the mounting hole and is fixed on the shell;

the movable part comprises a fixed column and a limiting block which is arranged at intervals with the fixed column, the fixed column penetrates through the fixed cylinder and rotates coaxially with the fixed cylinder, and the limiting block is provided with the limiting groove;

the key is used for enabling the movable part to rotate around the fixed cylinder shaft.

The invention also discloses a charger for electrical connection to an electronic device, comprising a transmission compression mechanism as claimed in any one of claims 1-9.

Compared with the prior art, the transmission compressing mechanism and the charger have the beneficial effects that: the eccentric shaft penetrates through the transmission hole of the moving part, so that the moving part moves linearly along with the rotation of the transmission part, the first elastic piece can provide force for preventing the moving part from moving linearly, the moving part protrudes out of the accommodating cavity in the linear moving direction, and the protruding part can press the electronic equipment. The transmission part of the transmission pressing mechanism is simple in structure and small in size, the transmission structure can enable the moving part to reach the maximum moving distance in the shortest rotating stroke, and the operation is more labor-saving. When the transmission pressing mechanism is applied to the electronic equipment charger, a user can rapidly fix and press the electronic equipment and charge the electronic equipment.

Drawings

FIG. 1 is an exploded view of the overall structure of a charger in an embodiment of the present invention;

FIG. 2 is a cross-sectional view of a charger in an embodiment of the invention;

fig. 3 is an enlarged view of detail B in fig. 2;

FIG. 4 is a rear view of a moving part in an embodiment of the invention;

FIG. 5 is a rear view of the transmission component of an embodiment of the present invention;

FIG. 6 is a schematic view of a moving part in an embodiment of the invention;

FIG. 7 is a schematic view of a portion of a driving compression mechanism in accordance with an embodiment of the present invention;

FIG. 8 is a rear view of a first spacing structure in an embodiment of the present invention;

fig. 9 is an enlarged view of detail C in fig. 8;

FIG. 10 is a front view of a second spacing structure in an embodiment of the present invention;

FIG. 11 is a rear view of the front housing in an embodiment of the invention;

fig. 12 is an enlarged view of detail D in fig. 11;

FIG. 13 is an exploded view of a portion of the structure of an embodiment of the present invention;

FIG. 14 is a schematic view of the structure of a transmission component in an embodiment of the invention;

fig. 15 is a rear view of the handle in an embodiment of the invention.

In the drawings, each reference numeral denotes:

10. a moving member; 110. a transmission member; 111. a transmission hole; 1111. a step part; 1111a, a plane; 1111b, transition surface; 112. pressing the bulge; 120. a fitting; 121. a first mounting arm; 122. a second mounting arm; 123. a third mounting arm; 124. an insulating support; 1241. an extension frame; 125. a wiring hole;

20. a transmission member; 210. a main shaft; 2211. a fixed block; 220. an eccentric shaft; 221. a first semicircular portion; 222. a second semicircular portion; 223. a limit part; 230. a fixing piece;

30. a trigger member; 310. a handle; 311. a fixing groove; 320. a gasket;

40. a housing; 410. a top cover; 411. a positioning arm; 420. a front shell; 421. a through hole; 422. a limiting plate; 430. a rear case;

50. a charging switch; 510. a housing; 520. a circuit board; 530. a pressing member;

60. a first 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; 730. a key;

80. a limit rebound member; 810. a first limit structure; 811. limiting sliding grooves; 8111. a limiting wall; 820. a second limit structure; 821. a slide block; 8211. a limiting surface; 822. a first limiting block; 830. and a second elastic member.

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, a transmission pressing mechanism includes: a housing 40, wherein a housing cavity is formed in the housing 40;

the transmission component 20 is rotatably connected to the shell 40 and is accommodated in the accommodating cavity, and the transmission component 20 comprises a main shaft 210 and an eccentric shaft 220 eccentrically arranged on the main shaft 210;

the moving part 10 is movably connected with the shell 40 and partially protrudes out of the accommodating cavity; the moving part 10 is provided with a transmission hole 111, the eccentric shaft 220 penetrates through the transmission hole 111, and the moving part 10 is used for linearly moving along with the rotation of the transmission part 20; the casing 40 is provided with a through hole 421 at the projection of the moving member 10 in the linear moving direction, and the through hole 421 is used for making the moving member 10 partially pass through the accommodating cavity;

a first elastic member 60 connected between the housing 40 and the moving member 10, the first elastic member 60 for providing a force for preventing the moving member 10 from moving linearly;

the triggering component 30 is connected to the transmission component 20, and the triggering component 30 is used for driving the transmission component 20 to rotate with the spindle 210 as an axial direction.

Specifically, in the present embodiment, the housing 40 includes a top cover 410, a front case 420, and a rear case 430, and the top cover 410, the front case 420, and the rear case 430 enclose a housing cavity that forms a transmission pressing mechanism. The transmission part 20 and the moving part 10 are accommodated in the accommodating cavity, the main shaft 210 of the transmission part 20 protrudes out of the accommodating cavity, and the trigger part 30 is positioned outside the accommodating cavity and one end of the trigger part is connected to the main shaft 210, so that the movement of the transmission shaft in the three-dimensional direction in the accommodating cavity is limited, the transmission shaft is fixed on the shell 40, and the transmission shaft can rotate around the main shaft 210 in any time needle direction.

The top cover 410 protrudes vertically downwards to form two positioning arms 411, the moving member 10 is slidably connected to the two positioning arms 411, specifically, the moving member 10 is located between the two positioning arms 411, two opposite sides of the moving member 10 abut against the two positioning arms 411, and the positioning arms 411 are used for limiting the movement of the moving member 10 in the horizontal direction.

The front case 420 has a through hole 421 formed at a projection of the moving member 10 in the linear moving direction, and the moving member 10 can partially protrude from the receiving cavity through the through hole 421 and abut against the electronic device outside the case 40, so as to achieve a pressing effect in cooperation with the first elastic member 60.

The main shaft 210 is a transmission shaft of the transmission pressing mechanism, and the radius of the main shaft 210 is uniformly reduced towards the length extending direction. One end of the triggering component 30 is connected to the main shaft 210, and one end of the triggering component 30 away from the main shaft 210 is used for applying force and driving the transmission component 20 to rotate in the axial direction of the main shaft 210, and the eccentric shaft 220 rotates in the time needle direction of the main shaft 210 and drives the moving component 10 to linearly move.

The transmission part 20 further comprises a fixing piece 230 connected between the main shaft 210 and the eccentric shaft 220, an inclined plane gradually reducing along the length extending direction is formed between the eccentric shaft 220 and the fixing piece 230, an arc-shaped interface can be arranged between the fixing piece 230 and the eccentric shaft 220 by the inclined plane, noise of the transmission part 20 and the moving part 10 in the moving process is reduced, abrasion among parts of the transmission compressing mechanism is reduced, the service life of the transmission compressing mechanism is prolonged, and the use experience of a user is optimized.

As an example, when no external force is applied to the triggering member 30 to drive the transmission member 20 to rotate, the moving member 10 partially penetrates the through hole 421, and the transmission pressing mechanism is in an initial pressing state.

An external force for driving the transmission component 20 to rotate is applied to the triggering component 30, so that the transmission component 20 rotates 90 degrees by taking the main shaft 210 as an axial direction, the eccentric shaft 220 penetrates through the transmission hole 111 of the moving component 10, the moving component 10 converts the rotary motion of the transmission component 20 into linear motion, the moving component 10 moves in a direction far away from the through hole 421 until the moving component is completely accommodated in the accommodating cavity, and the transmission pressing mechanism is in a pre-pressing state.

The first elastic member 60 can provide an elastic force for preventing the moving member 10 from moving away from the through hole 421 when the external force for driving the transmission member 20 to rotate is stopped from being applied to the triggering member 30, the moving member 10 moves toward the through hole 421 by the elastic force provided by the first elastic member 60, and the transmission pressing mechanism returns to the initial pressing state.

In the transmission compressing mechanism, the transmission part 20 has a simple structure, the main shaft 210 and the eccentric shaft 220 can enable the moving part 10 to reach the maximum moving distance in the shortest rotating stroke, the operation is labor-saving and simple, the whole occupied space of the transmission compressing mechanism is small, materials are further saved, the manufacturing cost is reduced, and when the transmission compressing mechanism is applied to an electronic equipment charger, a user can quickly fix and compress the electronic equipment and charge the electronic equipment.

Further, the moving member 10 includes a transmission member 110, one end of the transmission member 110 opposite to the first elastic member 60 is provided with a pressing protrusion 112, and the pressing protrusion 112 penetrates through the through hole 421 and protrudes out of the accommodating cavity.

Specifically, as shown in fig. 2 and 3, in the present embodiment, the front case 420 is provided with a through hole 421 matching with the pressing protrusion 112, the projection of the pressing protrusion 112 in the linear movement direction is located in the through hole 421, the pressing protrusion 112 and the through hole 421 can further limit the movement of the moving member 10 in the direction of the spindle 210, the electronic device outside the case 40 is provided with a groove matching with the pressing protrusion 112, and in the initial pressing state, the pressing protrusion 112 can be inserted into the groove of the electronic device, so as to play a role in rapidly pressing the electronic device.

Further, the driving member 110 is provided with a driving hole 111, and a stepped portion 1111 matched with the eccentric shaft 220 protrudes from a sidewall of the driving hole 111.

Specifically, in the present embodiment, as shown in fig. 3 and 4, the driving member 110 is provided with a driving hole 111 that matches the eccentric shaft 220, the inner wall of the driving hole 111 in the direction away from the pressing projection 112 is protruded with a stepped portion 1111, the stepped portion 1111 includes a plane 1111a and a transition surface 1111b that is connected from the plane 1111a to the inner wall of the adjacent driving hole 111, the plane 1111a extends in the direction toward the pressing projection 112 and is perpendicular to the inner wall of the driving hole 111, and the cross section of the transition surface 1111b perpendicular to the axial direction of rotation of the driving member 20 is arc-shaped.

The cross section of the transition surface 1111b perpendicular to the axial direction of the main shaft 210 includes an arc and a curve with a radius R2, which are sequentially connected: 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 1111b can intersect with the inner wall of the transmission hole 111 far from the pressing protrusion 112.

The step 1111 is opposite to the eccentric shaft 220 after rotating 90 ° with the main shaft 210 as the axial direction, firstly, the step 1111 can play a role in limiting the rotation stroke of the transmission component 20, secondly, the plane 1111a extending from the side wall of the transmission hole 111 towards the compression boss 112 in the step 1111 and the transition surface 1111b connected to the inner wall of the adjacent transmission hole 111 can also increase the rising distance of the moving component 10 after the transmission component 20 rotates for a fixed stroke, so that the user is more labor-saving, the effect of rapidly compressing and fixing the electronic device by using the transmission compressing mechanism can be achieved, finally, the cross section of the step 1111 perpendicular to the axial direction of the main shaft 210 is arc-shaped and curve-shaped, the noise generated by the eccentric shaft 220 and the transmission hole 111 in the rotation process is smaller, the rotation motion of the transmission mechanism is further converted into the linear motion of the moving component 10 to be smoother, and the use experience of the transmission compressing mechanism is improved.

Further, the outer profile of the cross section of the eccentric shaft 220 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.

Specifically, in the present embodiment, as shown in fig. 5, the closed ring shape includes two ellipses sharing a main diameter α, the main diameter α being disposed along the widest width direction of the closed ring shape cross section, the length of the shorter axis β of the ellipse near the axis of the main shaft 210210 being smaller than the main diameter α, and the longer axis γ of the ellipse away from the axis of the main shaft 210210 being greater than or equal to the main diameter α, β+γ < α. Preferably, 1.ltoreq.γ: alpha is less than or equal to 1.2. As an example, β: α=0.5, γ: α=1.125.

The parameter gamma of two closed annular ellipses is larger than or equal to alpha and larger than beta, the ellipse eccentricity close to the axis of the main shaft 210 is larger, the ellipse is flatter, the ellipse eccentricity far away from the axis of the main shaft 210 is smaller, the ellipse approaches to a circle, correspondingly, the eccentric shaft 220 comprises a first semicircular part 221 close to the axis of the main shaft 210 and a second semicircular part 222 far away from the axis of the main shaft 210, compared with the eccentric shaft 220 with a right circular cross section, when the rotating stroke is the same, the ratio of the short shaft beta to the length of the main diameter alpha is smaller, the first semicircular part 221 can drive the moving part 10 to linearly move more, the space required by the operation of a transmission mechanism is further saved, by the arrangement, a user can save labor, the occupied volume of the transmission pressing mechanism is smaller, and the electronic equipment can be fast pressed and fixed by the transmission pressing mechanism.

Preferably, the rotation angle of the transmission part 20 is optimally 0 to 90 °, and the arrangement of the minor axis of the semi-elliptical portion along the radial direction of the main shaft 210 can maximize the movement distance of the moving part 10 in the vertical direction when the eccentric shaft 220 rotates 90 ° around any one of the main shafts 210. Compared with the cliff cam design in the related art, the eccentric shaft 220 with the oval cross section has small noise, smooth movement process, strong flexibility and better use experience.

In other embodiments, a plane 1111a may be further disposed at the abutting position of the eccentric shaft 220 and the moving component 10 at a fixed angle, the area of the plane 1111a is as small as possible, and the plane 1111a and other parts of the eccentric shaft 220 are in transition through an arc surface, so as to further improve the use experience of the eccentric shaft 220 during movement and rest.

Preferably, as shown in fig. 6 and 3, the moving part 10 further includes a fitting 120 spaced apart from the transmission member 110 in a direction perpendicular to a length extension direction of the transmission hole 111, the fitting 120 being for mounting the charge switch 50, the fitting 120 including a first fitting arm 121, a second fitting arm 122 and a third fitting arm 123 connected in sequence, the second fitting arm 122 having a length extension direction perpendicular to the length extension direction of the transmission hole 111, the first fitting arm 121 and the third fitting arm 123 being disposed in parallel and having the same length extension direction. The first and third fitting arms 121 and 123 are symmetrically provided with mounting grooves matched with the charge switch 50. The charging switch 50 is fixedly connected to the first assembly arm 121 and the third assembly arm 123 through two ends of the mounting groove, the charging switch 50 is a push switch and is accommodated in the accommodating cavity, the casing 40 is provided with an opening corresponding to the projection position of the charging switch 50 in the linear movement direction, and the charging switch 50 is partially protruded out of the opening. As an example, the charging switch 50 includes a housing 510, a circuit board 520, and a pressing member 530 movably connected to the housing 510 along a linear movement direction of the moving member 10, the pressing member 530 protrudes out of an opening of the housing 40 corresponding to a projection of the charging switch 50 in the linear movement direction, a contact point is provided on a side of the circuit board 520 facing the pressing member 530, and the pressing member 530 is configured to move upward to abut against the contact point to communicate with a charger circuit.

The charging switch 50 can linearly move along with the linear movement of the moving member 10, when the charging switch 50 is in the pre-pressing state, the moving member 10 moves in the direction away from the pressing protrusion 112, all the charging switch 50 is accommodated in the accommodating cavity, when the electronic device is placed in the initial pressing state, the moving member 10 moves in the direction toward the pressing protrusion 112, one end of the pressing piece 530 of the charging switch 50 is abutted against the electronic device, and the other end is abutted against the contact point of the circuit board 520. So configured, the drive hold-down mechanism can assist in controlling the connection and closure of the charge switch 50.

The moving part 10 further includes an insulating bracket 124, the second fitting arm 122 is protruded with a plurality of positioning blocks in an extending direction away from the lengths of the first and third fitting arms 121 and 123, and as an example, the second fitting arm 122 is symmetrically protruded with two positioning blocks. The insulating support 124 is wrapped outside each positioning block, the insulating support 124 extends from the surface of one positioning block to the adjacent other positioning block to form an extension frame 1241, and a wiring hole 125 is formed between the insulating support 124 and the extension frame 1241 on the surfaces of the two adjacent positioning blocks, and the wiring hole 125 is used for allowing a connecting wire of the charging switch 50 on the assembly 120 to pass through. The wiring hole 125 can enable the connecting wire of the charging switch 50 to be connected to other circuits in order, and the insulating support 124 has good insulating performance, so that the charging switch 50 or the connecting wire of the charging switch 50 is prevented from being leaked to bring electric shock risks to a user of the transmission tightening mechanism.

Further, the driving compressing mechanism further comprises a limiting rebound member 80, and the limiting rebound member 80 further comprises a first limiting structure 810 fixed to the housing 40 and a second limiting structure 820 fixed to the driving member 20;

the second limiting structure 820 is rotatably connected to the first limiting structure 810 by taking the main shaft 210 as an axial direction of a time needle, the first limiting structure 810 is provided with a plurality of limiting sliding grooves 811 with gradually shrinking widths in the time needle direction of the rotation of the second limiting structure 820 around the main shaft 210, the second limiting structure 820 is provided with a plurality of sliding blocks 821 matched with the limiting sliding grooves 811, the sliding blocks 821 have elasticity, and the width of the sliding blocks 821 in the radial direction of the main shaft 210 is larger than the minimum width of the limiting sliding grooves 811.

Specifically, as shown in fig. 8-10, in the present embodiment, the limiting rebound member 80 is accommodated in the accommodating cavity, one end of the main shaft 210 is penetrated through the first limiting structure 810, the first limiting structure 810 and the main shaft 210 are coaxially provided with three limiting sliding grooves 811 sequentially connected to form sliding grooves, the three limiting sliding grooves 811 gradually shrink along the width of the second limiting structure 820 in the moving direction, the lengths of the three limiting sliding grooves 811 are equal, the second limiting structure 820 is provided with three sliding blocks 821 corresponding to the sliding grooves at uniform intervals, the cross section of the sliding blocks 821 is hexagonal, and two opposite side walls of the hexagonal sliding blocks 821 are abutted against the walls of the limiting sliding grooves 811.

The limiting rebound structure plays a limiting role in the rotation angle of the transmission part 20 of the transmission pressing mechanism by arranging the first limiting structure 810 and the second limiting structure 820 rotationally connected to the first limiting structure 810. Wherein, the limit sliding groove 811 with gradually-contracted width can form resistance limit, so that the sliding block 821 is in smart interference fit with the limit sliding groove 811, and the limit rebound structure is a rotation limit structure with a simplified structure. After the transmission part 20 in the transmission compressing mechanism rotates to a certain angle, a user can keep the transmission compressing mechanism in a pre-compression state without applying external force to the trigger assembly, so that the electronic equipment is further convenient to compress by the user through the transmission compressing mechanism, the operation steps of the transmission compressing mechanism are simplified, and the operation is more labor-saving, convenient and quick.

Preferably, the width of the sliding block 821 is equal to the maximum width of the limit sliding groove 811, the width of the limit sliding groove 811 is gradually reduced, when the width between the opposite sides of the hexagonal sliding block 821 is equal to the maximum width of the limit sliding groove 811, the larger the stroke of the second limit structure 820 rotating around the direction of the hour hand is, the larger the friction between the limit sliding groove 811 and the sliding block 821 is when the distance between the sliding block 821 and the next limit sliding groove 811 is closer, and the larger the force that the user needs to apply to the trigger member 30 is, whereas the larger the stroke of the second limit structure 820 rotating around the other hour hand is, the easier.

In other embodiments, the width of the sliding block 821 may be slightly larger than the maximum width of the limit groove 811 within the allowable range of elastic deformation of the sliding block 821, so long as the sliding block 821 can withstand the maximum elastic deformation.

Further, the limiting resilient member 80 further includes a second elastic member 830, two ends of the second elastic member 830 are respectively connected to the first limiting structure 810 and the second limiting structure 820, and the second elastic member 830 is configured to provide an elastic force around the spindle 210 in another clockwise direction for the second limiting structure 820.

Specifically, as shown in fig. 7 to 10, in the present embodiment, the second elastic member 830 is a torsion spring. When an external force is applied to the trigger component 30 to drive the second limiting structure 820 to rotate in a direction of a time needle with the spindle 210 as an axial direction, the width of the limiting chute 811 gradually shrinking can enable the second limiting structure 820 to rotate in the direction of the spindle 210 as an axial direction, the sliding block 821 receives a gradually increasing extrusion force from the wall of the limiting chute 811, and since the sliding block 821 has elasticity, the width of the sliding block 821 in the radial direction of the spindle 210 is larger than the minimum width of the limiting chute 811, and the sliding block 821 can move from one limiting chute 811 to the maximum width of the next limiting chute 811. Then, since the second elastic member 830 can provide the second limiting structure 820 with a force rotating in another clockwise direction with respect to the first limiting structure 810 with respect to the spindle 210, the sliding block 821 of the second limiting structure 820 can abut against the maximum width of the next limiting chute 811 when the external force stops being applied to the trigger member 30. Finally, the trigger member 30 is biased in the other clockwise direction about the spindle 210, so that the slider 821 of the second stopper 820 returns to the original stopper groove 811, and at this time, the biasing of the trigger member 30 is stopped, and the second stopper 820 can return to the original position by the elastic force of the second elastic member 830. The second elastic member 830 can function to assist in maintaining the limit state of the limit rebound structure and can function to release the limit state of the limit rebound structure.

Preferably, the second limiting structure 820 is made of rubber, which is a high elastic polymer material with reversible deformation, and has elasticity at room temperature, and can generate larger deformation under the action of small external force, and can recover after the external force is removed, and the sliding block 821 of the second limiting structure 820 can slide in the limiting sliding groove 811 of the first limiting structure 810 in an interference manner by utilizing the characteristic of rubber. Moreover, in the transmission hold-down mechanism, the second limiting structure 820 adopts rubber materials to avoid spark generated by rotation of the first limiting structure 810 made of metal materials, and the rubber materials are high in wear resistance, so that friction loss between the second limiting structure 820 and the first limiting structure 810 is greatly reduced, and the service life of the limiting rebound structure can be prolonged. In other embodiments, the second limiting structure 820 may be made of metal, and a rubber layer with a certain thickness is disposed on the surface.

Preferably, a plurality of limit sliding grooves 811 are connected end to form a closed loop, the connection of two adjacent limit sliding grooves 811 forms a limit wall 8111, and an included angle a between the limit wall 8111 and the side wall of the limit sliding groove 811 is larger than 90 ° and smaller than 150 °.

Specifically, in the present embodiment, as shown in fig. 8 to 9, two ends of the plurality of limit sliding grooves 811 are sequentially connected, a limit wall 8111 is formed by inward folding of the groove walls at the connection positions of the plurality of limit sliding grooves 811, and the sliding block 821 is provided with a limit surface 8211 matched with the limit wall 8111. Two adjacent side surfaces of the hexagonal sliding block 821 form two limit surfaces 8211 matched with the limit wall 8111. The limiting surface 8211 utilizes the inclined plane cooperation design, has realized the resistance spacing of inclined plane, can cooperate the elastic component to make spacing resilience structure keep spacing state.

As an example, the included angle a is 124 °, and the included angle a of the retraction of the limiting wall 8111 is an angle between the limiting wall 8111 and a cross section of the end of the limiting chute 811 near the limiting wall 8111 along the width direction. When the second limiting structure 820 rotates around the transmission shaft in a clockwise direction, if the angle of the included angle a between the limiting wall 8111 and the side wall of the limiting chute 811 is larger than 150 degrees, the limiting effect is poor, and if the angle of the included angle a between the limiting wall 8111 and the side wall of the limiting chute 811 is smaller than 90 degrees, the rotation of the second limiting structure 820 in the clockwise direction is irreversible, and cannot rebound to the initial state. The angle range of the included angle A between the side walls of the limiting wall 8111 and the limiting chute 811 is 90-150 degrees, so that the resistance limiting and automatic rebound functions of the limiting rebound structure are better realized.

It should be noted that the number and length of the limit sliding grooves 811 are related to the rotation angle of the transmission member 20 to be limited, and those skilled in the art can design the position and number of the limit sliding grooves 811 and the corresponding sliding blocks 821 according to different requirements. In other embodiments, the stop wall 8111 may also be a stop protrusion protruding within the slot wall.

Preferably, as shown, the sliding block 821 tapers towards the first limit structure 810, which facilitates the assembly between the first limit structure 810 and the second limit structure 820, so that the sliding block 821 moves in the limit chute 811 more smoothly.

Further, as shown in fig. 10 to 12, the second limiting structure 820 includes a main body and a first limiting block 822724 protruding along an edge of the main body, the housing 40 is provided with a limiting plate 422 toward the second limiting structure 820, and when the first limiting block 822724 rotates by an angle around the clockwise direction of the transmission shaft, the first limiting block 822724 abuts against the limiting plate 422. Specifically, when the second limiting structure 820 rotates 90 ° around the transmission shaft in a clockwise direction, the first limiting block 822724 abuts against the limiting plate 422. The limiting plate 422 is used for limiting the rotation travel of the second limiting structure 820. It should be appreciated that the maximum rotation angle of the second limiting structure 820 in the time pin direction may be set to any angle, and those skilled in the art may set the position of the limiting plate 422 according to the rotation angle requirement of the specific product.

Further, the driving pressing mechanism further comprises a limiting piece 70 rotatably connected to the shell 40, a limiting groove 7241 matched with the eccentric shaft 220 is formed in the limiting piece 70, one end of the eccentric shaft 220 penetrates through the limiting groove 7241, and the whole eccentric shaft 220 abuts against the inner wall of the limiting groove 7241.

Specifically, as shown in fig. 1, 7 and 13, in the present embodiment, the stopper 70 is provided at a distance from the moving member 10, and the axis of rotation of the stopper 70 is parallel to the direction of linear movement of the moving member 10. The eccentric shaft 220 has a limiting portion 223 penetrating the limiting groove 7241 in a direction away from the main shaft 210. The two adjacent sides of the limiting part 223, which are close to the limiting groove 7241, are abutted against the inner wall of the limiting groove 7241, so that the rotation of the transmission component 20 can be limited. The stopper 223 is projected axially along the main shaft 210 into the eccentric shaft 220, and the eccentric shaft 220 abuts against a surface of the stopper 70 on the side facing the main shaft 210. When the transmission compressing mechanism is in an initial compressing state, the limiting piece 70 rotates in a time needle direction, the limiting groove 7241 is close to the eccentric shaft 220, the eccentric shaft 220 is abutted to the inner wall of the limiting groove 7241, the transmission part 20 is in a locking state for limiting rotation, the limiting piece 70 rotates in the other time needle direction, the limiting groove 7241 is far away from the eccentric shaft 220, the transmission part 20 is in an unlocking state capable of rotating, and the transmission compressing mechanism can be switched between the initial compressing state and the pre-compressing state.

The limiting groove 7241 of the limiting piece 70 is abutted with the eccentric shaft 220, and the structure skillfully enables the transmission compressing mechanism to keep an initial compressing state on the electronic equipment, so that the operation is simple, and a user can further compress and charge the electronic equipment.

Further, the limiting member 70 includes a fixed cylinder, a movable portion 720 rotatably connected to the fixed cylinder, and a lock key 730 engaged with the movable portion 720;

the shell 40 is provided with a mounting hole matched with the fixed cylinder, and the fixed cylinder is penetrated through the mounting hole and fixed on the shell 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.

Specifically, as shown in fig. 13, in the present embodiment, the top cover 410 of the housing 40 is recessed toward the accommodating cavity to form a mounting groove, the mounting groove is provided with a mounting hole matched with the limiting member 70, and the housing 40 further includes a dust cover which is matched with the mounting groove and detachably connected to the mounting groove.

The limiting member 70 includes a fixed portion 710 fixedly connected to the housing 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 inserted into the mounting hole, and the fixing nut 712 is screwed around the 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 housing 40 by the above arrangement.

The movable portion 720 includes a fixed cover, a fixed post 721, at least one positioning post 722, a connecting arm 723, and a stopper 724.

The fixing boss 721 includes a first fixing boss 7211, a second fixing boss 7212, and a third fixing boss 7213 connected in sequence from the top cover 410 to the second fixing boss 713.

The first fixing column 7211 is arranged in the mounting hole in a penetrating way, and a clamping groove matched with the lock key 730 is formed in the first fixing column 7211;

the second fixing post 7212 is located between the top cover 410 and the second fixing cylinder 713, the second fixing post 7212 is provided with at least one positioning hole along the length extension direction, the positioning post 722 is penetrated in the positioning hole, and as an example, the second fixing post 7212 is provided with four positioning holes, and one positioning post 722 is correspondingly provided;

the third fixed column 7213 is arranged on the second fixed cylinder 713 in a penetrating way, one end of the connecting arm 723 is abutted against the end part of the first fixed cylinder 711, which is far away from the top cover 410, and is connected with the third fixed column 7213 by a screw, the other end of the connecting arm 723 is integrally connected with the limiting block 724, and the limiting block 724 is provided with a limiting groove 7241.

The fixed cover is disposed corresponding to the first fixed cylinder 711 and is clamped in the mounting groove, and the lock key 730 is used for penetrating into the fixed cover to abut against the positioning column 722. When the key 730 is inserted, the positioning post 722 abuts against the bottom of the positioning hole to prevent the key 730 from being inserted further, and the whole movable part 720 can rotate around the axis of the first fixed cylinder 711 by rotating the key 730, so that the limit groove 7241 of the movable part 720 is far away from the limit part 223 of the eccentric shaft 220 or is sleeved on the limit part 223 of the eccentric shaft 220.

The limiting part 223 and the corresponding limiting piece 70 can lock the transmission compressing mechanism, and limit the rotation of the transmission part 20 when the transmission compressing mechanism does not move, so as to limit the linear movement of the moving part 10, so that the locking function of the transmission compressing mechanism in the application of the electronic equipment is met by a simplified structure, the occupied space is small, and the whole material of the transmission compressing mechanism is saved.

Preferably, as shown in fig. 1, a spacer 320 is disposed between the triggering element 30 and the housing 40, and the second elastic member 830 is located between the housing 40 and the spacer 320.

Preferably, as shown in fig. 14 to 15, one end of the main shaft 210, which is close to the trigger component 30, is outwards protruded with a plurality of fixing blocks 2211, and the trigger component 30 is provided with fixing grooves 311 matched with the fixing blocks 2211. The triggering component 30 comprises a handle 310 and a gasket 320, the gasket 320 and the spindle 210 are coaxially provided with a rotating shaft opening matched with the spindle 210, the gasket 320 is arranged between the handle 310 and a front shell 420 of the shell 40, the spindle 210 sequentially penetrates through the rotating shaft opening of the base plate and the gasket 320 and is spirally fixed at one end of the handle 310, the handle 310 is provided with a fixing groove 311 matched with the fixing block 2211, and the fixing block 2211 is inserted into the fixing groove 311. The use of the trigger member 30 with one end connected to the spindle 210 can avoid the variation of the angle between the trigger member 30 and the spindle 210, so that the transmission compressing mechanism maintains the optimal transmission performance.

Working principle:

first, when no external force is applied to the triggering member 30 to drive the transmission member 20 to rotate, the moving member 10 partially penetrates through the through hole 421, and the transmission pressing mechanism is in an initial pressing state, and at this time, no electronic device is placed.

Next, an external force is applied to the trigger member 30 to drive the transmission member 20 to rotate, so that the transmission member 20 rotates 90 ° in a time-needle direction with the spindle 210 as an axial direction, the eccentric shaft 220 penetrates the transmission hole 111 of the moving member 10, the moving member 10 converts the rotational motion of the transmission member 20 into linear motion, and the moving member 10 moves in a direction away from the through hole 421 until being completely accommodated in the accommodating cavity. Meanwhile, the second limiting structure 820 in the limiting rebound structure is fixedly connected to the transmission component 20, the second limiting structure 820 also rotates 90 degrees in a time needle direction by taking the main shaft 210 as an axial direction, the sliding block 821 on the second limiting structure 820 moves from the initial position of one limiting sliding groove 811 on the first limiting structure 810 to the maximum width of the next limiting sliding groove 811, the external force for driving the transmission component 20 to rotate is stopped to be applied to the triggering component 30, the second elastic piece 830 can provide the second limiting structure 820 with the force for rotating in the other time needle direction relative to the first limiting structure 810 by taking the main shaft 210 as an axial direction, the sliding block 821 of the second limiting structure 820 can abut against the maximum width of the next limiting sliding groove 811, the transmission component 20 stops moving along with the second limiting structure 820, and the moving component 10 keeps a state of being completely accommodated in the accommodating cavity. At this time, the transmission hold-down mechanism is in a pre-pressed state, and a user can put the electronic equipment into the charger.

Finally, an instantaneous external force is applied to the triggering member 30 again to rotate the transmission member 20, the sliding block 821 on the second limiting structure 820 is elastically deformed, the sliding block 821 returns to the previous limiting sliding groove 811 from the maximum width of the one limiting sliding groove 811, and the second limiting structure 820 is subjected to the force provided by the second elastic member 830 to rotate in the other clockwise direction relative to the first limiting structure 810 by taking the spindle 210 as the axial direction, and the sliding block 821 returns to the initial position of the previous limiting sliding groove 811. At this time, the transmission member 20 rotates 90 ° about the spindle 210 in the other clockwise direction, the moving member 10 partially penetrates the through hole 421, and the first elastic element 60 can provide an elastic force for preventing the moving member 10 from moving away from the through hole 421, the moving member 10 moves toward the through hole 421 by the elastic force provided by the first elastic element 60, the transmission pressing mechanism returns to the initial pressing state, the pressing protrusion 112 penetrates the groove on the electronic device matching with the pressing protrusion 112, and the electronic device is fixed in the charger.

In addition, when the transmission compressing mechanism is in an initial compressing state, the limiting piece 70 rotates in a time needle direction, the limiting groove 7241 is close to the eccentric shaft 220, the eccentric shaft 220 is abutted to the inner wall of the limiting groove 7241, the transmission part 20 is in a locking state for limiting rotation, the limiting piece 70 rotates in the other time needle direction, the limiting groove 7241 is far away from the eccentric shaft 220, the transmission part 20 is in an unlocking state capable of rotating, and the transmission compressing mechanism can be switched between the initial compressing state and the pre-compressing state.

The present invention also provides a charger, please refer to fig. 1-15, for being electrically connected to an electronic device, comprising the above-mentioned transmission compressing mechanism, wherein the transmission compressing mechanism is assembled in the charger as before, and will not be described herein.

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. A drive compression mechanism, comprising:

the shell is internally provided with a containing cavity;

the transmission component is rotationally connected with the shell and accommodated in the accommodating cavity, and comprises a main shaft and an eccentric shaft eccentrically arranged on the main shaft;

the movable part is movably connected with the shell and partially protrudes out of the accommodating cavity; the moving component is provided with a transmission hole, the eccentric shaft penetrates through the transmission hole, and the moving component is used for moving linearly along with the rotation of the transmission component; the casing is provided with a through hole at the projection of the moving part in the linear moving direction, and the through hole is used for enabling the moving part to partially pass through the accommodating cavity;

a first elastic member connected between the housing and the moving member, the first elastic member for providing a force to prevent the moving member from moving linearly;

the trigger component is connected with the transmission component and is used for driving the transmission component to rotate in a time needle direction by taking the main shaft as an axial direction.

2. The transmission pressing mechanism according to claim 1, wherein the moving member includes a transmission member, and a pressing protrusion is disposed at one end of the transmission member opposite to the first elastic member, and the pressing protrusion penetrates through the through hole and protrudes out of the accommodating cavity.

3. The transmission hold-down mechanism of claim 2, wherein the transmission member is provided with the transmission hole, and a stepped portion is projected from a side wall of the transmission hole to match the eccentric shaft.

4. A driving pressing mechanism according to claim 1, wherein the cross section of the eccentric shaft perpendicular to the axial direction thereof has an outer contour of 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.

5. The drive compression mechanism of claim 1, further comprising a limiting rebound member, the limiting rebound member further comprising a first limiting structure secured to the housing and a second limiting structure secured to the drive member;

the second limit structure takes the main shaft as an axial time needle direction to rotate and connect with the first limit structure, the first limit structure is provided with a plurality of limit sliding grooves with gradually-retracted width in the time needle direction of the rotation of the second limit structure around the main shaft, the second limit structure is provided with a plurality of sliding blocks matched with the limit sliding grooves, the sliding blocks have elasticity, and the width of the sliding blocks in the radial direction of the main shaft is larger than the minimum width of the limit sliding grooves.

6. The transmission compressing mechanism according to claim 5, wherein the limiting rebound member further comprises a second elastic member, two ends of the second elastic member are respectively connected to the first limiting structure and the second limiting structure, and the second elastic member is used for providing elastic force around the other clockwise direction of the main shaft for the second limiting structure.

7. The transmission compressing mechanism according to claim 5, wherein a plurality of limit sliding grooves are connected end to form a closed loop, a limit wall is formed at the joint of two adjacent limit sliding grooves, and an included angle a between the limit wall and the side wall of the limit sliding groove is larger than 90 ° and smaller than 150 °.

8. The transmission compressing mechanism according to claim 1, further comprising a limiting piece rotatably connected to the housing, wherein a limiting groove matched with the eccentric shaft is formed in the limiting piece, one end of the eccentric shaft penetrates through the limiting groove, and the whole body of the eccentric shaft abuts against the inner wall of the limiting groove.

9. The transmission pressing mechanism according to claim 8, wherein the limiting member comprises a fixed cylinder, a movable part rotatably connected to the fixed cylinder, and a key clamped to the movable part;

the shell is provided with a mounting hole matched with the fixed cylinder, and the fixed cylinder penetrates through the mounting hole and is fixed on the shell;

the movable part comprises a fixed column and a limiting block which is arranged at intervals with the fixed column, the fixed column penetrates through the fixed cylinder and rotates coaxially with the fixed cylinder, and the limiting block is provided with the limiting groove;

the key is used for enabling the movable part to rotate around the fixed cylinder shaft.

10. A charger for electrical connection to an electronic device, comprising a drive compression mechanism as claimed in any one of claims 1 to 9.