CN111641065B

CN111641065B - Telescopic transmission mechanism and electronic device expansion seat

Info

Publication number: CN111641065B
Application number: CN202010522418.4A
Authority: CN
Inventors: 刘国光; 林彰城; 谢铭原; 陈勇志
Original assignee: Huanxu Shenzhen Electronic Technology Innovation Co ltd
Current assignee: Huanxu (Shenzhen) Electronic Technology Innovation Co.,Ltd.
Priority date: 2020-06-10
Filing date: 2020-06-10
Publication date: 2021-07-30
Anticipated expiration: 2040-06-10
Also published as: CN111641065A

Abstract

The invention provides a telescopic transmission mechanism and an electronic device expansion seat. The central gear is pivoted at a pivot point; the swinging plate is pivoted at the pivot point and comprises a tooth row facing to the central gear; the transmission gear is engaged between the central gear and the gear row; the rack is engaged with the central gear; the connecting part is driven by the rack to be positioned at a first position or a second position. The swing plate swings to enable the transmission gear to rotate, and the linkage central gear drives the rack to linearly displace so as to drive the connecting part to be switched from the first position to the second position. Thereby mutually driving in a gear transmission way, and amplifying the horizontal stroke by the arrangement of the tooth pitch.

Description

Telescopic transmission mechanism and electronic device expansion seat

Technical Field

The present invention relates to a retractable transmission mechanism and an electronic device docking station, and more particularly, to a retractable transmission mechanism and an electronic device docking station using gear transmission.

Background

In order to balance the size, weight and functions of the portable electronic device, an electronic device dock for connecting the portable electronic device to other devices or equipment has been developed.

The conventional electronic device docking station includes a retractable connecting portion, and the retractable connecting portion is manually operated, that is, the connecting portion is taken by a user and then connected to or disconnected from the portable electronic device. However, this actuation method requires manual operation, which is inconvenient to operate.

In order to solve the above problem, some manufacturers have developed an electronic device docking station with an automatic retractable connection portion, which utilizes the longitudinal weight of the portable electronic device when being pressed down to drive the retractable transmission mechanism to horizontally push out the connection portion so as to connect to the portable electronic device, thereby providing convenience in operation.

However, the portable electronic device has a short downward stroke (longitudinal stroke) and a limited horizontal stroke for jointly pushing out the connecting portion, so how to improve the structure of the telescopic transmission mechanism and the electronic device docking station to provide a sufficient horizontal stroke under the premise of convenient operation becomes an object of efforts of related manufacturers.

Disclosure of Invention

In order to solve the above problems, the present invention provides a retractable transmission mechanism and an electronic device docking station, which can make the retractable transmission mechanism have a sufficient horizontal distance and facilitate the connection between the connection portion and the electronic device by structural configuration.

According to an embodiment of the present invention, a telescopic transmission mechanism includes a central gear, a swing plate, a transmission gear, a rack and a connecting portion. The central gear is pivoted at a pivot point; the swinging plate is pivoted on the pivot point and comprises a tooth row facing to the central gear; the transmission gear is engaged between the central gear and the gear row; the rack is engaged with the central gear; the connecting part is driven by the rack to be positioned at a first position or a second position. The swing plate swings to enable the transmission gear to rotate, and the linkage central gear drives the rack to linearly displace so as to drive the connecting part to be switched from the first position to the second position.

Therefore, the central gear, the transmission gear, the swinging plate and the rack are mutually driven in a gear transmission mode, and the horizontal stroke can be amplified through the configuration of the tooth pitch.

According to various embodiments of the telescopic transmission mechanism, the telescopic transmission mechanism may further include a connecting plate and a swing arm. The connecting plate is pivoted on the pivot point and is used for pivoting the transmission gear, and the connecting plate comprises a second limiting surface; the swing arm includes a first limiting surface. When the first limiting surface and the second limiting surface of the swing arm abut against each other, the connecting plate is limited by the swing arm and cannot move, and the swing plate swings to drive the connecting part to be switched from the first position to the second position; when the swing arm swings relative to the connecting plate to separate the first limiting surface from the second limiting surface, the connecting plate is not limited by the swing arm, and the rack is allowed to be pulled back to enable the connecting part to be switched to the first position from the second position.

According to various embodiments of the aforementioned retractable transmission mechanism, the rack may include a side portion, the swing arm includes a pushing surface, and the swing arm is actuated to push the pushing surface against the side portion to pull back the rack.

According to another embodiment of the present invention, an electronic device dock is provided, which is used for an electronic device to be placed and includes a base and a retractable transmission mechanism. The base comprises an underframe, a lifting frame and a linkage group, the lifting frame is movably arranged on the underframe, and the linkage group is arranged between the underframe and the lifting frame. The telescopic transmission mechanism is arranged on the base and comprises a central gear, a swinging plate, a transmission gear, a rack and a connecting part. The central gear is pivoted on a pivot point of the bottom frame; the swinging plate is pivoted on the pivot point and is connected with the linkage group, and the swinging plate comprises a tooth row facing to the central gear; the transmission gear is engaged between the central gear and the gear row; the rack is engaged with the central gear; the connecting part is driven by the rack to be positioned at a first position or a second position. When the electronic device is placed on the lifting frame, the lifting frame presses downwards towards the bottom frame to drive the linkage group, the swinging plate swings by the linkage group to enable the transmission gear to rotate, and the linkage central gear drives the rack to linearly displace to drive the connecting part to be coupled with the electronic device after being switched from the first position to the second position.

According to various embodiments of the docking station of the electronic device, the retractable transmission mechanism may further include a connecting plate and a swing arm. The connecting plate is pivoted on the pivot point and is used for pivoting the transmission gear, and the connecting plate comprises a second limiting surface; the swing arm is pivoted on the bottom frame and comprises a first limiting surface. When the first limiting surface and the second limiting surface of the swing arm abut against each other, the connecting plate is limited by the swing arm and cannot move, the electronic device is placed on the lifting frame to swing the swing plate, so that the connecting part is driven to be switched from the first position to the second position, and the swing plate is limited by the lifting frame; when the swing arm swings relative to the connecting plate to separate the first limiting surface from the second limiting surface, the connecting plate is not limited by the swing arm, the rack is pulled back to drive the connecting plate to move relative to the swing plate, and the connecting part is switched to the first position from the second position.

According to various embodiments of the docking station of the electronic device, the retractable transmission mechanism may further include a release set including a button and an actuating block. The button is used for a user to operate; the actuating block is linked by the button to push the swing arm. Wherein the swing arm is pushed to release the connecting plate and pull back the rack.

According to various embodiments of the docking station of the electronic device, the swing arm may include an inclined surface, the button is pressed to drive the actuating block to swing, and the inclined surface is pushed by the actuating block to pivot the swing arm.

According to various embodiments of the docking station of the electronic device, the rack may include a side portion, the swing arm includes a pushing surface, and the swing arm is actuated to push the pushing surface against the side portion to pull back the rack.

According to various embodiments of the docking station of the electronic device, the retractable transmission mechanism may further include a supporting set, which includes a fixing plate, a guiding hole, a sliding plate and a limiting hole. The fixed plate is connected with the lifting frame; the guide hole position penetrates through the fixing plate; the sliding plate is movably arranged above the fixed plate and is connected with the connecting part; the limiting hole is positioned on the sliding plate and communicated with the guide hole. The rack comprises a convex pin which protrudes from the body of the rack, and the convex pin extends into the guide hole and the limiting hole. When the rack is displaced, the convex pin moves in the guide hole, so that the sliding plate moves relative to the fixed plate to drive the connecting part to be switched from the first position to the second position.

Drawings

FIG. 1 is a schematic perspective view of an electronic device dock according to an embodiment of the present invention;

FIG. 2 is an exploded view of the docking station of the electronic device of the embodiment of FIG. 1;

FIG. 3 is a partially exploded view of the docking station of the electronic device of the embodiment of FIG. 1;

FIG. 4 is another partially exploded view of the docking station of the electronic device of the embodiment of FIG. 1;

FIG. 5 is a partial perspective view of the docking station of the electronic device in the embodiment of FIG. 1;

FIG. 6 is a partial perspective view of the docking station of the electronic device of the embodiment of FIG. 1;

FIG. 7 is a partial top perspective view of the docking station of the electronic device of the embodiment of FIG. 1;

FIG. 8 is a schematic top view of the retractable transmission mechanism of the docking station of the electronic device of FIG. 1;

FIG. 9 is another schematic top view of the retractable transmission mechanism of the docking station of the electronic device of FIG. 1;

FIG. 10 is a schematic top view of the retractable transmission mechanism of the docking station of the electronic device of FIG. 1;

FIG. 11 is a schematic front view of the docking station of the electronic device in the embodiment of FIG. 1;

FIG. 12 is a front view of a portion of the docking station of the electronic device of the embodiment of FIG. 1;

FIG. 13 is a front view of the actuator block and the swing arm of the docking station of the electronic device of FIG. 1;

FIG. 14 is a front view, schematic operation diagram of another portion of the docking station of the electronic device in the embodiment of FIG. 1;

FIG. 15 is a partial perspective view of the docking station of the electronic device in the embodiment of FIG. 1;

FIG. 16 is a schematic partial perspective view illustrating the docking station of the electronic device in the embodiment of FIG. 1; and

fig. 17 is a partial perspective view of the docking station of the electronic device in the embodiment of fig. 1.

Description of reference numerals:

10: expansion seat of electronic device

100: telescopic transmission mechanism

110: central gear

120: swinging plate

121: tooth row

122: acupoint therapy

123: pivot hole

124: arc hole

130: transmission gear

140: rack bar

141: occlusion tooth

142: convex pin

143: side part

150: connecting part

160: connecting plate

161: second limiting surface

162: shaft body

170: swing arm

171: pushing face

172: inclined plane

173: first limiting surface

180: release group

181: push button

1811: pressing part

182: actuating block

183,196,218,219: spring

190: support set

191: fixing plate

192: guide hole

193: track

194: sliding plate

195: limiting hole

200: base seat

210: chassis

211: step part

212: bottom layer

213: side plate

214: guide hole

215: locating slot

216: pivot shaft

217: convex rail

220: lifting frame

221: positioning projection

230: linkage group

231: pivot rod

232: sliding bar

233: connecting rod

234: lanyard

300: protective cover

E1: electronic device

R1: a first direction

Detailed Description

Embodiments of the present invention will be described below with reference to the accompanying drawings. For the purpose of clarity, numerous implementation details are set forth in the following description. However, the reader should understand that these implementation details should not be used to limit the invention. That is, in some embodiments of the invention, these implementation details are not necessary. In addition, some conventional structures and elements are shown in simplified schematic form in the drawings for the sake of simplifying the drawings; and repeated elements will likely be designated by the same reference numerals or similar reference numerals regardless of partial schematic or partial views, indicating that some components may be omitted, without limiting the invention thereto.

In addition, when an element (or a mechanism or a module, etc.) is "connected," "disposed" or "coupled" to another element, it can be directly connected, disposed or coupled to the other element, or it can be indirectly connected, disposed or coupled to the other element, that is, there are other elements between the element and the other element. When an element is explicitly connected, directly disposed, or directly coupled to another element, it is intended that no other element is interposed between the element and the other element. The terms first, second, third, etc. are used merely to describe various elements or components, but the elements/components themselves are not limited, so that the first element/component can be also referred to as the second element/component. And the combination of elements/components/mechanisms/modules herein is not a commonly known, conventional or existing combination in the art, and cannot be readily determined by one skilled in the art whether the combination is readily accomplished by determining whether the elements/components/mechanisms/modules themselves are present.

Referring to fig. 1, fig. 2, fig. 3, and fig. 4, fig. 1 is a schematic perspective view illustrating an electronic device dock 10 according to an embodiment of the invention, fig. 2 is a schematic exploded view illustrating the electronic device dock 10 according to the embodiment of fig. 1, fig. 3 is a schematic partially exploded view illustrating the electronic device dock 10 according to the embodiment of fig. 1, and fig. 4 is a schematic partially exploded view illustrating the electronic device dock 10 according to the embodiment of fig. 1. The electronic device dock 10 is used for placing an electronic device E1 (shown in fig. 12) and includes a base 200 and a telescopic transmission mechanism 100.

The base 200 includes a base frame 210, a lifting frame 220 and a linkage group 230, wherein the lifting frame 220 is movably disposed on the base frame 210, and the linkage group 230 is disposed between the base frame 210 and the lifting frame 220. The retractable transmission mechanism 100 is disposed on the base 200 and includes a central gear 110, a swing plate 120, a transmission gear 130, a rack 140 and a connecting portion 150. The central gear 110 is pivoted to a pivot point of the bottom frame 210; the swing plate 120 is pivoted to the pivot point and connected to the linkage set 230, and the swing plate 120 includes a tooth row 121 facing the central gear 110; the transmission gear 130 is engaged between the sun gear 110 and the tooth row 121; the rack 140 is engaged with the sun gear 110; the connecting portion 150 is driven by the rack 140 to be located at a first position or a second position. When the electronic device E1 is placed on the lifting frame 220, the lifting frame 220 is pressed downward toward the base frame 210 to drive the linkage group 230, the swing plate 120 is swung by the linkage group 230 to rotate the transmission gear 130, and the linkage central gear 110 drives the rack 140 to linearly displace to drive the connecting portion 150 to switch from the first position to the second position, and then to couple with the electronic device E1.

Therefore, the central gear 110, the transmission gear 130, the swing plate 120 and the rack 140 are driven by the gear transmission manner, and the horizontal stroke can be enlarged by the arrangement of the tooth pitch, thereby facilitating the combination of the connecting part 150 and the electronic device E1. Details of the electronic device dock 10 will be described later.

The bottom frame 210 includes a step portion 211, a bottom layer 212 and a side plate 213, the step portion 211 is higher than the bottom layer 212 and the side plate 213, the bottom layer 212 is connected to the front of the step portion 211 and is used for the linkage set 230 and the lifting frame 220 to be set, and the side plate 213 is connected to the side edges of the step portion 211 and the bottom layer 212 and is used for the telescopic transmission mechanism 100 to be set. The lifting frame 220 has a cover structure and comprises a front end pivoted to a front end of the bottom layer 212 and capable of pivoting relative to the bottom layer 212, three positioning protrusions 221 are protruded from the inner surface of the lifting frame 220, and the three positioning protrusions 221 are respectively inserted into the three positioning grooves 215 on the bottom layer 212 correspondingly to prevent the lifting frame 220 from shifting.

The linkage group 230 may be located between the inner surface of the lifting frame 220 and the bottom layer 212 and includes two pivot rods 231, a link 233, a slide rod 232 and a lanyard 234, the two pivot rods 231 are spaced apart from each other and one end of each pivot rod 231 is pivoted to the bottom layer 212, two ends of the link 233 are respectively pivoted to the other ends of the two pivot rods 231 to form a parallel link assembly, one end of the slide rod 232 is pivoted to the other end of one of the pivot rods 231, the other end of the slide rod 232 is limited by the guide hole 214 on the bottom layer 212, and the lanyard 234 is connected between the other end of the slide rod 232 and the swing plate 120.

Referring to fig. 5, fig. 6 and fig. 7, and fig. 1 to fig. 4, wherein fig. 5 illustrates a partial perspective view of the electronic device dock 10 of the embodiment of fig. 1, fig. 6 illustrates another partial perspective view of the electronic device dock 10 of the embodiment of fig. 1, and fig. 7 illustrates a partial top perspective view of the electronic device dock 10 of the embodiment of fig. 1. The central gear 110 and the swing plate 120 are pivoted on the pivot 216 of the side plate 213, and therefore can be pivoted on the same pivot point on the bottom frame 210, the swing plate 120 has a fan-shaped structure and includes a pivot section, a middle section and an arc section which are sequentially connected, the pivot section includes a containing cavity 122 and a pivot hole 123, the containing cavity 122 is used for placing the central gear 110, the pivot hole 123 penetrates through the body of the swing plate 120 and is used for being sleeved on the pivot 216, the gear row 121 is located on the arc section, and the transmission gear 130 is located in the middle section and can be simultaneously meshed with the central gear 110 and the gear row 121.

The telescopic mechanism 100 may further include a connecting plate 160 and a swing arm 170. The connecting plate 160 is pivoted to the pivot point, and the connecting plate 160 is pivoted to the transmission gear 130; swing arm 170 optionally retains attachment plate 160. When the connecting plate 160 is limited by the swing arm 170 and cannot move, the swing plate 120 swings to drive the connecting part 150 to switch from the first position to the second position; when the connection plate 160 is not restrained by the swing arm 170, the rack 140 is allowed to be pulled back to switch the connection part 150 from the second position to the first position.

More specifically, the connecting plate 160 is also pivoted to the pivot 216 and has the same pivot point as the sun gear 110. The connecting plate 160, the swinging plate 120 and the central gear 110 are sequentially sleeved on the pivot 216 from bottom to top and then locked by a locking member (not labeled). The connecting plate 160 may include a shaft body 162, the middle portion of the swing plate 120 includes an arc hole 124, the shaft body 162 protrudes upwards into the arc hole 124, the shaft body 162 is guided and limited by the arc hole 124 and is pivoted to the transmission gear 130, so that the sun gear 110, the transmission gear 130, the swing plate 120 and the connecting plate 160 may form a planetary gear structure, which is equivalent to a sun gear, a planetary gear, a ring gear and a planet carrier.

The swing arm 170 is rod-shaped and has one end pivoted to the bottom frame 210, and the pivot point of the swing arm 170 is different from the pivot point of the central gear 110. The telescopic driving mechanism 100 may further include a releasing set 180, and the swing arm 170 is linked by the releasing set 180 to selectively release or limit the connecting plate 160. The swing arm 170 may include a slope 172, a first limiting surface 173 and a pushing surface 171, the first limiting surface 173 is located at the other end of the swing arm 170, and the slope 172 and the pushing surface 171 are located at two opposite sides of the swing arm 170.

The release group 180 includes a button 181 and an actuation block 182. The button 181 is used for a user to operate; the actuating block 182 is driven by the button 181 to push the swing arm 170. The swing arm 170 is pushed to release the connecting plate 160 and pull back the rack 140, and the rack 140 may include a side portion 143, and the swing arm 170 is actuated to push the pushing surface 171 against the side portion 143 to pull back the rack 140.

In detail, the electronic device dock 10 may further include a protection cover 300, and the protection cover 300 is disposed on the side plate 213, so as to prevent the telescopic transmission mechanism 100 from being damaged by collision and achieve a dustproof effect. The button 181 is movably disposed outside the protection cover 300 and can be pressed by a user, the actuating block 182 is disposed in the protection cover 300 and pivotally disposed on the protection cover 300, the actuating block 182 includes a force-bearing end and a pushing end, the force-bearing end corresponds to a pressing portion 1811 of the button 181, the pushing end corresponds to the inclined surface 172, the button 181 is pressed down to drive the actuating block 182 to swing, and the inclined surface 172 is pushed by the actuating block 182 to pivot the swing arm 170 to release the connecting plate 160. In terms of structural configuration, the connecting plate 160 includes a second limiting surface 161, and the first limiting surface 173 and the second limiting surface 161 abut against each other to limit the swinging of the connecting plate 160, so that after the swinging arm 170 swings pivotally, the swinging arm leaves the limiting position, and the first limiting surface 173 and the second limiting surface 161 are separated, and at this time, the displacement of the connecting plate 160 is not limited.

The telescopic transmission mechanism 100 may further include a support assembly 190 including a fixing plate 191, a guiding hole 192, a sliding plate 194 and a limiting hole 195. The fixing plate 191 is connected to the lifting frame 220; the guide hole 192 penetrates the fixing plate 191; the sliding plate 194 is movably disposed above the fixed plate 191 and is connected to the connecting portion 150; the stopper hole 195 is located on the slide plate 194 and communicates with the guide hole 192. The rack 140 may include a protruding pin 142 protruding from the body of the rack 140, and the protruding pin 142 extends into the guiding hole 192 and the limiting hole 195. When the rack 140 is shifted, the protruding pin 142 moves in the guiding hole 192, so that the sliding plate 194 moves relative to the fixed plate 191, and the connecting portion 150 is switched from the first position to the second position.

The rack 140 is movably disposed on the protruding rail 217 of the side plate 213, the rack 140 includes a plurality of engaging teeth 141 protruding toward the central gear 110 and horizontally arranged in addition to the protruding pin 142, the engaging teeth 141 are engaged with the central gear 110, and the rack 140 can be driven by the central gear 110 or driven by the swing arm 170 to horizontally displace.

The support assembly 190 may include two rails 193 on the fixing plate 191, and the sliding plate 194 can be limited in movement within the two rails 193. The width of the guiding hole 192 is larger than that of the limiting hole 195 and has a sufficient horizontal space for the convex pin 142 to move, so that when the rack 140 moves to drive the convex pin 142 to move in the guiding hole 192, the fixing plate 191 is not moved, and the sliding plate 194 is driven by the rack 140 due to the coupling relationship between the convex pin 142 and the limiting hole 195, so that the connecting portion 150 can be horizontally switched from the first position to the second position.

In addition, since the support set 190 is horizontally positioned only by the protruding pin 142, but not longitudinally positioned, the fixing plate 191 connected to the lifting frame 220 can be lifted together with the lifting frame 220 while maintaining a parallel relationship with the lifting frame 220. Therefore, the sliding plate 194 disposed on the fixing plate 191 and the connecting part 150 connected to the sliding plate 194 can also be kept parallel to the lifting frame 220 during the lifting process of the lifting frame 220, so that the connecting part 150 can be inserted into the electronic device E1 in parallel. Furthermore, the fixing plate 191 may be pivoted to the lifting frame 220 and longitudinally limited and connected to the lifting frame 220 by a spring 196, so that when the connecting part 150 is inserted into the electronic device E1, even if the slight longitudinal alignment is not correct, the fixing plate 191 may be finely adjusted in height in the longitudinal direction by the pivot connection and the limiting structure of the spring 196, thereby facilitating the connection between the connecting part 150 and the electronic device E1.

Referring to fig. 8, fig. 11 and fig. 15, and fig. 1 to fig. 4, wherein fig. 8 illustrates a top operation schematic view of the telescopic transmission mechanism 100 of the electronic device dock 10 of the embodiment of fig. 1, fig. 11 illustrates a front view schematic view of the electronic device dock 10 of the embodiment of fig. 1, and fig. 15 illustrates a partial three-dimensional operation schematic view of the electronic device dock 10 of the embodiment of fig. 1. Initially, the electronic device E1 is not placed, the connecting plate 160 is limited by the swing arm 170, and the connecting portion 150 is located at the first position and does not protrude from the protective cover 300.

Referring to fig. 9, 12 and 16, and fig. 1 to 4, wherein fig. 9 illustrates another top operation schematic diagram of the telescopic transmission mechanism 100 of the electronic device docking station 10 in the embodiment of fig. 1, fig. 12 illustrates a front operation schematic diagram of a portion of the electronic device docking station 10 in the embodiment of fig. 1, and fig. 16 illustrates another partial perspective operation schematic diagram of the electronic device docking station 10 in the embodiment of fig. 1. When the electronic device E1 is placed on the lifting frame 220 to generate a downward gravity, the two pivot rods 231 of the linkage set 230 deflect, the slide rod 232 displaces along the guide hole 214 and the linkage lanyard 234 pulls the swing plate 120 to rotate towards a first direction R1, because the swing arm 170 still limits the connection plate 160 at this time, the transmission gear 130 can only rotate but can not move, and when the transmission gear 130 rotates, the transmission gear 130 links the central gear 110, so that the rack 140 displaces. When the rack 140 is displaced, the protruding pin 142 drives the sliding plate 194, and the connecting portion 150 can be pushed out to be located at the second position. Since the fixing plate 191 can keep the connection part 150 and the lifting frame 220 parallel when lifted, i.e. the connection part 150 and the electronic device E1 can keep parallel, when the electronic device E1 is placed on the lifting frame 220 and the telescopic transmission mechanism 100 is driven by its own weight to automatically operate, the connection part 150 can extend out and be inserted into the slot of the electronic device E1, and is electrically connected with the electronic device E1.

Referring to fig. 10, 13, 14 and 17, and referring to fig. 1 to 4 together, wherein fig. 10 illustrates a further top operation schematic diagram of the telescopic transmission mechanism 100 of the electronic device dock 10 in the embodiment of fig. 1, fig. 13 illustrates an elevation operation schematic diagram of the actuating block 182 and the swing arm 170 of the electronic device dock 10 in the embodiment of fig. 1, fig. 14 illustrates another partial elevation operation schematic diagram of the electronic device dock 10 in the embodiment of fig. 1, and fig. 17 illustrates a further partial perspective operation schematic diagram of the electronic device dock 10 in the embodiment of fig. 1. If the user wants to detach the electronic device E1, the button 181 is pressed, the button 181 causes the actuating block 182 to swing, as shown in fig. 13, the actuating block 182 pushes the inclined surface 172 of the swing arm 170, and after the swing arm 170 swings, as shown in fig. 10, the first limiting surface 173 and the second limiting surface 161 of the connecting plate 160 are immediately separated, and the connecting plate 160 is not limited and can swing freely. Subsequently, the swing arm 170 is pushed to swing continuously, the pushing surface 171 starts to push the side portion 143 of the rack 140, at this time, although the swing plate 120 is limited by the electronic device E1 and cannot swing, since the connecting plate 160 is released, after the rack 140 drives the central gear 110 to rotate, the driving gear 130 is driven to rotate, so that the driving gear 130 displaces along the rack row 121 to drive the connecting plate 160 to swing towards the first direction R1, and therefore, the rack 140 can smoothly drive the connecting portion 150 to retract to the first position.

The connecting part 150 retracts to the first position after the button 181 is pressed, and the connection relation with the electronic device E1 is released, so that the user can directly take the electronic device E1 away. It should be noted that, after the button 181 is released and the swing arm 170 returns to the limit position due to the restoring force of the spring 183, the swing arm 170 is no longer pressed by the actuating block 182 and can return to the limit position due to the restoring force of the spring 218, so that after the electronic device E1 is removed, the swing plate 120 can also return to the limit position due to the restoring force of the spring 219, so as to drive the transmission gear 130 to rotate and displace, so that the connecting plate 160 returns to the original position and is limited by the swing arm 170 again, and the telescopic transmission mechanism 100 can return to the original state. To achieve this actuation result, the swing arm 170 may be configured to limit the swing of the connecting plate 160 in the first direction R1 when in the limiting position, but not limit the swing of the connecting plate 160 in a second direction opposite to the first direction R1, and allow the connecting plate 160 to be reset.

Therefore, after the user only needs to place the electronic device E1 on the lifting rack 220 of the electronic device docking station 10, the connection part 150 can automatically extend out to connect to the electronic device E1; if the electronic device E1 is to be removed, the connecting portion 150 can be withdrawn by pressing the button 181, and the user does not need to continuously press the button 181 during the process of removing the electronic device E1, which is very convenient in operation. And the gear transmission manner of the telescopic transmission mechanism 100 can provide enough horizontal travel to effectively connect the electronic device E1.

In other embodiments, the retractable transmission mechanism may not be applied to the docking station of the electronic device, that is, when the connection portion is in other forms and needs to be extended again during use, the retractable transmission mechanism can be used for retractable transmission, which is not limited in this respect.

Although the present invention has been described with reference to the above embodiments, it should be understood that various changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope of the invention.

Claims

1. A telescopic transmission, comprising:

a central gear, which is pivoted on a pivot point;

a swing plate pivoted to the pivot point and including a tooth row facing the central gear;

a transmission gear engaged between the central gear and the gear row;

a rack engaged with the central gear; and

the connecting part is driven by the rack to be positioned at a first position or a second position;

the swing plate swings to enable the transmission gear to rotate, and the central gear is linked to drive the rack to linearly displace so as to drive the connecting part to switch from the first position to the second position.

2. The telescopic drive of claim 1, further comprising:

a connecting plate pivoted to the pivot point and pivoted to the transmission gear, the connecting plate including a second limiting surface; and

a swing arm including a first limiting surface;

when the first limiting surface of the swing arm abuts against the second limiting surface, the connecting plate is limited by the swing arm and cannot move, and the swing plate swings to drive the connecting part to be switched from the first position to the second position; when the swing arm swings relative to the connecting plate to separate the first limiting surface from the second limiting surface, the connecting plate is not limited by the swing arm, and the rack is allowed to be pulled back to switch the connecting part from the second position to the first position.

3. The telescopic transmission mechanism according to claim 2, wherein the rack comprises a side portion, and the swing arm comprises a pushing surface, and the swing arm is actuated to push the pushing surface against the side portion to pull back the rack.

4. An electronic device docking station for placing an electronic device, comprising a base and a retractable transmission mechanism, wherein:

the base comprises an underframe, a lifting frame and a linkage group;

the lifting frame is movably arranged on the bottom frame;

the linkage group is arranged between the bottom frame and the lifting frame; and

the telescopic transmission mechanism is arranged on the base and comprises a central gear, a swinging plate, a transmission gear, a rack and a connecting part:

the central gear is pivoted on a pivot point of the bottom frame;

the swinging plate is pivoted on the pivot point and is connected with the linkage group, and the swinging plate comprises a gear row facing to the central gear;

the transmission gear is engaged between the central gear and the gear row;

the rack is engaged with the central gear;

when the electronic device is placed on the lifting frame, the lifting frame presses downwards towards the bottom frame to drive the linkage group, the swinging plate swings by the linkage group to enable the transmission gear to rotate, the central gear is linked to drive the rack to linearly displace to drive the connecting part to be coupled with the electronic device after being switched from the first position to the second position.

5. The electronic device dock of claim 4, wherein the retractable transmission mechanism further comprises:

a swing arm, which is pivoted on the bottom frame and comprises a first limiting surface;

when the first limiting surface of the swing arm abuts against the second limiting surface, the connecting plate is limited by the swing arm and cannot move, the electronic device is placed on the lifting frame to swing the swing plate, so that the connecting part is driven to be switched from the first position to the second position, and the swing plate is limited by the lifting frame;

when the swing arm swings relative to the connecting plate to separate the first limiting surface from the second limiting surface, the connecting plate is not limited by the swing arm, the rack is pulled back to drive the connecting plate to move relative to the swing plate, and the connecting part is switched from the second position to the first position.

6. The electronic device dock of claim 5, wherein the retractable actuator further comprises a release assembly, the release assembly comprising:

a button for a user to operate; and

an actuating block linked by the button to push the swing arm;

wherein, this swing arm pushed and releases this connecting plate and pull back this rack.

7. The docking station as claimed in claim 6, wherein the swing arm includes a slope, the button is pushed to drive the actuator to swing, and the slope is pushed by the actuator to pivot the swing arm.

8. The electronic device dock of claim 6, wherein the rack comprises a side portion, and the swing arm comprises a pushing surface, the swing arm being actuated to push the pushing surface against the side portion to pull the rack back.

9. The electronic device dock of claim 5,

the telescopic transmission mechanism further comprises a support group, and the support group comprises:

a fixing plate connected to the lifting frame;

a guide hole penetrating the fixing plate;

a sliding plate movably arranged above the fixed plate and connected with the connecting part; and

a limiting hole which is positioned on the sliding plate and communicated with the guiding hole; and is

The rack includes:

the convex pin protrudes from the body of the rack and extends into the guide hole and the limiting hole;

when the rack is displaced, the protruding pin moves in the guiding hole, so that the sliding plate moves relative to the fixed plate, and the connecting part is driven to be switched from the first position to the second position.