WO2018126712A1

WO2018126712A1 - Child safety seat support leg structure

Info

Publication number: WO2018126712A1
Application number: PCT/CN2017/099382
Authority: WO
Inventors: 赖威廷; 王季中; 时青; 加里多•尼古拉斯•冈萨雷斯
Original assignee: 苏州纪宝儿童用品有限公司
Priority date: 2017-01-09
Filing date: 2017-08-29
Publication date: 2018-07-12
Also published as: CN106740313B; CN106740313A

Abstract

A child safety seat support leg structure, comprising an outer tube (1), a first inner tube (2) and a second inner tube (3). Several first positioning holes (11) are arranged on the outer tube (1), the outer tube (1) is sleeved on the outside of the first inner tube (2) and slides with respect to the first inner tube (2), several second positioning holes (21) are arranged on the first inner tube (2), the first inner tube (2) is sleeved on the outside of the second inner tube (3) and slides with respect to the second inner tube (3), the inside of the first inner tube (2) is provided with a first sliding and positioning mechanism (22), a push button (4) is mounted on the second inner tube (3), the inside of the second inner tube (3) is provided with a second sliding and positioning mechanism (31) and a rotating mechanism (32), and the push button (4) controls the rotating mechanism (32) to rotate and thereby control the sliding and positioning of the first sliding and positioning mechanism (22) and the second sliding and positioning mechanism (31) on the outer tube (1) and the first inner tube (2). The present structure solves the problem of supporting a child safety seat, and has the advantages of being flexible in adjustment, simple in structure and low in cost.

Description

Child safety seat support leg structure

Technical field

The invention relates to the technical field of child safety seats, in particular to a child safety seat support leg structure.

Background technique

The car child safety seat, also known as the child restraint system, is a seat designed for children of different ages (or weights) and installed in the car to effectively improve the safety of children riding. It can be combined with additional devices such as portable cots, infant carriers, auxiliary seats or collision protection. In the event of a collision or sudden deceleration of the car, slow down the impact on the child and limit the child's body movement to reduce the damage to them and ensure the safety of the child.

In child safety seats, it is usually necessary to install support legs to support the seat. However, different seats are installed on different car seats and need to be supported by support legs of different heights. Therefore, an adaptation is needed. Support legs of different heights.

Summary of the invention

The object of the present invention is to overcome the deficiencies of the prior art and to provide a child safety seat support leg structure, which can conveniently adjust the height of the support legs to meet the needs of different support leg heights of the child seat.

In order to achieve the above object, the present invention provides the following technical solution: a child safety seat support leg structure, including an outer tube, a first inner tube, and a second inner tube;

The outer tube is provided with a plurality of first positioning holes on the same straight line, and the outer tube is sleeved outside the first inner tube and slides relative to the first inner tube;

The first inner tube is provided with a plurality of second positioning holes on the same straight line, and the first inner tube is sleeved outside the second inner tube and slides relative to the second inner tube;

a button is mounted on the second inner tube;

a first sliding positioning mechanism is disposed in the first inner tube, and a second sliding setting is disposed in the second inner tube The position mechanism and the rotating mechanism, the button controls the rotation of the rotating mechanism to control the first sliding mechanism and the second sliding mechanism such that the first inner tube is inside the outer tube and the second inner tube is slid and positioned in the first inner tube.

Preferably, the outer tube is further provided with a first locking pin positioning hole and a first limiting mechanism positioning hole, and the first locking pin positioning hole and the first limiting mechanism positioning hole are both disposed on the outer tube.

Preferably, the outer tube is further provided with a first limiting mechanism, and the first limiting mechanism is installed inside the lower end of the outer tube through the positioning hole of the first limiting mechanism and sleeved outside the first inner tube.

Preferably, the first sliding positioning mechanism includes a first body and a second body that are connected to each other, and a first limiting boss is formed between the first body and the second body, and the first limiting mechanism resists the A limit boss is described to prevent the first inner tube from falling out of the outer tube.

Preferably, the second body is provided with a first locking pin hole, and the first locking pin hole is provided with a first spring and a first locking pin, and the first locking pin can be inserted into the first locking The pin is positioned in the hole.

Preferably, the first inner tube is provided with a second locking pin positioning hole, and a second limiting mechanism positioning hole, wherein the second locking pin positioning hole and the second limiting mechanism positioning hole are both disposed in the first inner tube On the tube.

Preferably, the first inner tube is further provided with a second limiting mechanism, and the second limiting mechanism is installed inside the lower end of the first inner tube through the positioning hole of the second limiting mechanism and is sleeved in the second Outside the inner tube.

Preferably, the second sliding positioning mechanism comprises a third body and a fourth body connected together, a second limiting boss is formed between the third body and the fourth body, and the second limiting mechanism resists the The second limiting boss prevents the second inner tube from falling out of the first inner tube.

Preferably, the fourth body is provided with a second locking pin hole, the second locking pin hole is provided with a connected second spring and a second locking pin, and the second locking pin can be inserted into the second locking The pin is positioned in the hole.

Preferably, the rotating mechanism includes a rotating fixed seat, a rotating connecting member disposed on the rotating fixed seat, and a transmission mechanism disposed on the rotating connecting member, the transmission mechanism includes a first connecting rod and a second a connecting rod, the rotating connecting member comprising a first sleeve and a second sleeve connected, the first connecting rod penetrating the first sleeve and connected to the first sliding positioning mechanism, the second connection A rod extends through the second sleeve and is coupled to the second slide positioning mechanism.

Preferably, the first connecting rod includes a first connecting rod and a first positioning pin, the first connecting rod runs through the first sleeve, and the first positioning rod penetrates the first The sliding positioning mechanism can be inserted into the first positioning hole.

Preferably, the second connecting rod comprises a connected second transmission rod and a second positioning pin, the second transmission rod extends through the second sleeve, and the second positioning rod extends through the second The sliding positioning mechanism can be inserted into the second positioning hole.

The beneficial effects of the invention are:

The child safety seat supporting leg structure of the present invention drives the rotating mechanism to rotate by pressing a button, thereby unlocking the first inner tube and the second inner tube, so that the first inner tube is opposite to the outer tube and the second inner tube. The sliding of the first inner tube and the release of the button realize the positioning of the first inner tube relative to the outer tube and the second inner tube relative to the first inner tube, and have the advantages of flexible adjustment, simple structure and low cost.

DRAWINGS

Figure 1 is a schematic view showing the installation of the support legs of the present invention;

Figure 2 is a perspective view of a support body of the present invention;

Figure 3 is a schematic cross-sectional view of the support leg of the present invention;

Figure 4 is a schematic view of the end portion of the support leg of the present invention;

Figure 5 is a schematic exploded view of the support leg portion of the present invention;

Figure 6 is a perspective view showing the first limit mechanism of the present invention;

Figure 7 is a perspective view showing a second limit mechanism of the present invention;

Figure 8 is a perspective view showing the first sliding positioning mechanism of the present invention;

Figure 9 is a schematic view showing the exploded view of the rotating mechanism of the present invention;

Figure 10 is a perspective view showing a second sliding positioning mechanism of the present invention;

Figure 11 is a first embodiment of the support leg adjustment state of the present invention;

Figure 12 is a schematic view of the first lock pin and the second lock pin of the present invention;

Figure 13 is a second embodiment of the support leg adjustment state of the present invention;

Figure 14 is a third view of the support leg adjustment state of the present invention.

Reference numerals: 1, outer tube, 11, first positioning hole, 12, mounting pin hole, 121, stop positioning piece, 122, stop positioning groove, 13, first locking pin positioning hole, 14, first limit Positioning mechanism positioning hole, 15, first limiting mechanism, 151, first limiting protrusion, 152, first U-shaped groove, 153, second U-shaped groove, 2 An inner tube, 21, a second positioning hole, 22, a first sliding positioning mechanism, 221, a first body, 222, a second body, 223, a first limiting boss, 224, a first locking pin hole, 2241 First spring, 2242, first locking pin, 225, first sliding groove, 226, sliding bar, 227, second sliding groove, 228, third limiting protrusion, 23, first sliding positioning mechanism positioning hole, 24 Second limiting mechanism positioning hole, 25, second limiting mechanism, 251, second limiting

protrusion

251, 252, third U-shaped groove, 253, fourth U-shaped groove, 26, second locking pin positioning Hole, 3, second inner tube, 31, second sliding positioning mechanism, 311, third body, 312, fourth body, 3121, second locking pin hole, 31211, second spring, 31212, second locking pin, 313, second limiting boss, 32, rotating mechanism, 321, rotating fixed seat, 3210, receiving cavity, 3211, first through hole, 3212, second through hole, 322, rotating connection member, 3221, first set Tube, 3222, second sleeve, 3223, first rotating protrusion, 3224, second rotating protrusion, 323, transmission mechanism, 3231, first connecting rod, 32311, first transmission rod, 3231 2. First positioning pin, 32313, horizontal axis, 3232, second connecting rod, 32321, second transmission rod, 32322, second positioning pin, 33, rotating mechanism mounting hole, 34, bolt hole, 4, button .

detailed description

The technical solutions of the embodiments of the present invention will be clearly and completely described in the following with reference to the accompanying drawings.

The child safety seat support leg structure disclosed by the invention can freely adjust the height of the support leg to provide support for the child safety seat.

As shown in FIG. 1 , FIG. 2 and FIG. 3 , the child safety seat support leg structure comprises an outer tube 1 , a first inner tube 2 , and a second inner tube 3 , and the outer tube 1 is sleeved on the first inner tube 2 . And being slidable up and down with respect to the first inner tube 2, the first inner tube 2 is sleeved outside the second inner tube 3, and is slidable up and down with respect to the second inner tube 3; There are a plurality of first positioning holes 11 on the same straight line, and the first inner tube 2 is provided with a plurality of second positioning holes 21 on the same straight line.

The first inner tube 2 is further provided with a first sliding positioning mechanism 22, the second inner tube 3 is mounted with a button 4, and the second inner tube 3 is provided with a second sliding positioning mechanism 31 and rotating The mechanism 32 is connected to the first sliding positioning mechanism 22 and the second sliding positioning mechanism 31, and the button 4 is connected to the rotating mechanism 32. When the height of the support leg is adjusted, the button 4 controls the rotation mechanism 32 to rotate, The first sliding positioning mechanism 22 and the second sliding positioning mechanism 31 are further controlled to achieve sliding and positioning of the first inner tube 2 relative to the outer tube 1 and the second inner tube relative to the first inner tube.

In this embodiment, the outer tube 1 is a rounded rectangular tube, and of course other shapes, such as a circular tube, may be used. As shown in FIG. 4, the end portion of the outer tube 1 connected to the child safety seat base is provided with a mounting pin hole 12, and the mounting pin hole 12 is formed by upwardly protruding from the upper end portion of the outer tube 1, the mounting The pin hole 12 is provided with a plurality of stop positioning pieces 121 for positioning and preventing sliding. The stop positioning pieces 121 are evenly distributed on the mounting pin holes 12, and a stop is formed between the stop positioning pieces 121. Positioning slot 122. During installation, the outer tube 1 is positioned by the stop positioning piece 121 and the stop positioning groove 122 so that the pin penetrates the mounting pin hole 12, thereby mounting the outer tube 1 on the base of the child safety seat.

As shown in FIG. 2 and FIG. 5, further, the first positioning holes 11 provided on the outer tube 1 are located on the same straight line, and when the first inner tube 2 slides in the outer tube 1, the rotating mechanism passes the first sliding positioning mechanism. Cooperating with the first positioning hole, the sliding and positioning of the first inner tube in the outer tube is realized, and the height of the support leg is further adjusted. The outer tube 1 is further provided with a first locking pin positioning hole 13 and a first limiting mechanism positioning hole 14 , and the first locking pin positioning hole 13 and the first limiting mechanism positioning hole 14 are both disposed on the outer tube The lower end of 1.

As shown in FIG. 6 , the outer tube 1 is further provided with a first limiting mechanism 15 . The first limiting mechanism 15 has a tubular structure and is mounted on the lower end of the outer tube 1 through the first limiting mechanism positioning hole 14 . Internally and sleeved outside the first inner tube 2, the first inner tube 2 is slidable relative to the first limiting mechanism 15, and the first limiting mechanism 15 and the first inner tube 2 are first disposed The slide positioning mechanism 22 cooperates to prevent the first inner tube 2 from coming off the outer tube 1 when sliding inside the outer tube 1. A symmetric first limiting protrusion 151 is disposed on the left and right sidewalls of the first limiting mechanism 15 , and the first limiting protrusion 151 cooperates with the first limiting mechanism positioning hole 14 to achieve the first limit. The position mechanism 15 is fixedly mounted in the outer tube 1. In the embodiment, preferably, the first limiting protrusion 151 can be pressed and deformed to facilitate disassembly. Further, the rear wall of the first limiting mechanism 15 is further provided with two U-shaped slots with the first positioning hole 11 and the first locking pin positioning hole 13, that is, the first U-shaped groove 152 and the second U Shape groove 153.

As shown in FIG. 2 and FIG. 5, the second positioning holes 21 provided on the first inner tube 2 are located on the same straight line, and when the second inner tube 3 slides in the first inner tube 2, the rotating mechanism passes the second sliding. The positioning mechanism cooperates with the second positioning hole to realize sliding and positioning of the second inner tube in the first inner tube, and further adjusts The height of the support legs. The first inner tube 2 is provided with a first sliding positioning mechanism positioning hole 23 and a second limiting mechanism positioning hole 24, and the first sliding positioning mechanism positioning hole 23 is disposed at the upper end portion of the first inner tube 2, The second limiting mechanism positioning hole 22 is disposed at a lower end portion of the first inner tube 2 for mounting the second limiting mechanism 25, and the first inner tube 2 is further disposed There is a second locking pin positioning hole 26, and the second locking pin positioning hole 26 is disposed at an upper end portion of the first inner tube, and is in the same plane as the second positioning hole 21.

As shown in FIG. 7 , the second limiting mechanism 25 is a tubular structure. The second limiting mechanism positioning hole 24 is mounted inside the lower end of the first inner tube 2 and sleeved outside the second inner tube 3 . The second inner tube 3 is slidable relative to the second limiting mechanism 25, and the second limiting mechanism 25 cooperates with the second sliding positioning mechanism 31 disposed on the second inner tube 3 to prevent the second inner tube 3 from being in the second When the inner tube 2 slides inside, it is detached from the first inner tube 2. A symmetrical second limiting protrusion 251 is disposed on the left and right sidewalls of the second limiting mechanism 25, and the second limiting protrusion 251 cooperates with the second limiting mechanism positioning hole 24 to implement the second limit. The position mechanism 25 is fixedly mounted in the first inner tube 2. In the embodiment, preferably, the second limiting protrusion 251 can be pressed and deformed to facilitate disassembly. Further, the second limiting mechanism 25 is provided with two U-shaped grooves that cooperate with the second positioning hole 21 and the second locking pin positioning hole 26, that is, the third U-shaped groove 252 and the fourth U-shaped groove. 253.

As shown in FIG. 8 and FIG. 12, the first sliding positioning mechanism 22 is disposed in the first inner tube 3, and specifically, the first sliding positioning mechanism 22 is fixedly mounted on the upper end of the first inner tube 2, The first sliding positioning mechanism 22 enables sliding and positioning of the second inner tube 3 within the outer tube 1. The first sliding positioning mechanism 22 includes a first body 221 and a second body 222. The first body 221 and the second body 222 form a first limiting boss 223, the first limit. The mechanism 15 resists the first limiting boss 223 to prevent the first inner tube 2 from falling out of the outer tube 1 when the height of the supporting leg is adjusted. The first body 222 is provided with a first locking pin hole 224. The first locking pin hole 224 is provided with a first spring 2241 and a first locking pin 2242. The first spring 2241 is first. The elastic force of the locking pin 2242 is weak. When the first sliding positioning mechanism 22 slides to the lower end of the outer tube 1, the first locking pin 2242 passes through the first locking groove of the first U-shaped groove and the outer tube 1. 13 is matched to realize the positioning of the first sliding positioning mechanism 22 to prevent it from slipping from the inside of the outer tube 1. The lower end surface of the second body is recessed upward to form a first sliding groove 225, and the second body is provided with two sliding bars 226 having a certain gap, and the sliding bar is disposed on the first sliding A second sliding groove 227 is formed on both sides of the groove 225 and between the lower end surface of the second body. In this embodiment, the sliding bar 226 is preferably an L-shaped sliding bar.

Further, the two sidewalls of the first sliding positioning mechanism 22 are provided with symmetric third limiting protrusions 228, and the third limiting protrusions 228 and the first sliding positioning mechanism on the first inner tube 2 The positioning holes 23 cooperate to realize the fixed mounting of the first sliding positioning mechanism 22. Preferably, the third limiting protrusions 228 can be pressed and deformed for convenient disassembly.

The second inner tube 3 is provided with a rotating mechanism mounting hole 33 for mounting the rotating mechanism 32; the inner side of the upper end portion of the second inner tube 3 is provided with a bolt hole 34 for mounting the second sliding positioning mechanism 31, and the lower end A button 4 is provided for controlling the rotation mechanism 32.

As shown in FIG. 9, the rotating mechanism 32 includes a rotating fixed seat 321, a rotary connecting member 322 disposed on the rotating fixed seat, and a transmission mechanism 323 provided on the rotating connecting member.

Further, the rotating connector 322 includes a first sleeve 3221 and a second sleeve 3222 that are connected to each other. The length of the first sleeve 3221 is greater than the length of the second sleeve 3222. The first sleeve 3221 And two symmetrical protrusions on the side wall of the second sleeve 3222, namely a first rotation protrusion 3223 and a second rotation protrusion 3224, the first rotation protrusion 3223 and the second rotation protrusion The 3224 is on the same line.

The transmission mechanism 323 includes a first connecting rod 3231 and a second connecting rod 3232. Specifically, the first connecting rod 3231 includes a first connecting rod 32311 and a first positioning pin 32312 connected to each other, the first transmission The upper end of the rod 3231 is further provided with a horizontal shaft 32313, wherein the horizontal shaft 32313 can slide in the second sliding groove 227, the first transmission rod 32311 penetrates the first sleeve 3221, and can be The first sleeve 3212 is vertically slidable in the first sleeve 3221. The first positioning pin 32312 is disposed in the first sliding slot 225 of the first sliding positioning mechanism 22 and can be inserted into the first positioning hole 11 through the second body 222. When the rotary connecting member rotates, the first transmission rod rotates 3231, and the horizontal shaft 32313 of the first transmission rod 3231 slides along the second sliding groove 227, so that the first positioning pin 32312 can penetrate the second body and be inserted into the outer tube. a first positioning hole 11 on the first positioning hole 11 to achieve positioning; the second connecting rod 3232 includes a second connecting rod 32321 and a second positioning pin 32322 connected thereto, the second transmission rod 3232 extending through the second a sleeve 3222 capable of sliding up and down within the second sleeve 3222, the second positioning pin 32322 It is disposed in the second sliding positioning mechanism 31 and can be inserted into the second positioning hole on the first inner tube through the second sliding positioning mechanism.

The rotating fixing base 321 is provided with a receiving cavity 3210 for accommodating the rotating connecting member. The left and right side walls of the receiving cavity are provided with a first through hole 3211 matching the first rotating protrusion and the second rotating protrusion. And a second through hole 3212 (not shown), the front side wall of the rotating fixed seat 321 is provided with a fourth limiting protrusion 3123, and the fourth limiting protrusion 3123 and the rotation on the second inner tube 3 The mechanism mounting holes 33 are matched to realize that the rotating mechanism 32 is fixed in the second inner tube 3. The accommodating chamber is provided with a third spring (not shown), and the first rotating protrusion and the second rotating protrusion on the rotating connecting member are connected with the third spring, and the spring resists the inner wall of the accommodating chamber On the top, it is possible to give the rotating joint a restoring force.

As shown in FIG. 10 and FIG. 12, the second sliding positioning mechanism 31 includes a third body 311 and a fourth body 312 that are connected to each other, and a second limiting protrusion is formed between the third body 311 and the fourth body 312. The second limiting mechanism 25 abuts against the second limiting boss 313 to prevent the second inner tube 3 from falling out of the first inner tube 2 when the height of the supporting leg is adjusted. The second body 312 is provided with a second locking pin hole 3121. The second locking pin hole 3121 is provided with a second spring 31211 and a second locking pin 31212. The second spring 31211 is second. The lock pin 31212 has a weak forward elastic force. When the second slide positioning mechanism 31 slides to the lower end portion of the first inner tube 2, the second lock pin is opposite to the second lock pin hole on the first inner tube 2. With the cooperation, the positioning of the second sliding positioning mechanism 31 is realized to prevent it from slipping.

As shown in FIG. 11 and FIG. 12, when in the position shown in the figure, the button 4 is pressed, the button 4 further pushes the second connecting rod 3232, and the second connecting rod 3232 drives the rotating connecting member 322 to rotate. The rotating connecting member 322 rotates the first connecting rod 3231 to separate the first positioning pin 32312 from the first positioning hole 11 on the outer tube 1, thereby unlocking the outer tube 1 and the first inner tube 2, and simultaneously A locking pin 2241 is not in the first locking pin positioning hole 13 of the outer tube 1, but the second locking pin 31212 has a certain force in the second locking pin positioning hole 26 of the first inner tube 2, so that the second The inner tube 3 cannot slide freely within the first inner tube 2, so that the first inner tube 2 can slide inside the outer tube 1, and when the required height is reached, the button 4 is released, and the third spring gives the rotating link 322 a restoring force. The restoring force causes the first positioning pin to pass through the first positioning hole 11 for positioning.

As shown in FIG. 12 and FIG. 13, when the adjustment is as shown in FIG. 13, the button 4 is continuously pressed, and the pull-down state is maintained. Since the first sliding positioning mechanism 22 is limited by the first limiting mechanism 15, it cannot be pulled down. Therefore, the second locking pin 3112 installed in the second sliding positioning mechanism 31 can overcome the force given by the second locking pin positioning hole 26 on the first outer tube 1, and is separated from the second locking pin positioning hole 26, the second inner The tube 3 can slide freely in the first inner tube 2, and when the required height is reached, the button 4 is released, and the third spring gives a restoring force to the rotating connecting member, and the restoring force causes the second positioning pin 32322 to penetrate the second positioning hole 21 Positioning.

12 and FIG. 14, when in the position shown in FIG. 14, when the button 4 is pressed, the button 4 pushes the second connecting rod 3232, and the second connecting rod 3232 drives the rotating connecting member 322 to rotate, and the rotating connecting member further drives The first connecting rod 3231 rotates, the first connecting rod 3231 unlocks the outer tube 1 and the first inner tube 2, and the second connecting rod 3232 unlocks the first inner tube 2 and the second inner tube 3, at which time the second locking pin 31212 does not In the second lock pin positioning hole 26, the second inner tube 3 can slide in the first inner tube 2, since the first lock pin 2241 mounted on the first slide positioning mechanism 22 is in the first lock pin positioning hole 13, Therefore, the first inner tube 2 cannot slide in the outer tube 1; when the second inner tube 3 slides in the first inner tube 2, the second locking pin 31212 installed in the second sliding positioning mechanism 31 enters the second locking pin positioning. In the hole 26, when the upward adjustment is continued, the second inner tube 3 can no longer be adjusted upward, so the first locking pin 2241 installed in the first sliding positioning mechanism 22 overcomes the force given by the first locking pin positioning hole 13 on the outer tube 1. So that it can slide inside the outer tube 1.

The technical content and the technical features of the present invention have been disclosed as above, but those skilled in the art can still make various alternatives and modifications without departing from the spirit and scope of the present invention based on the teachings and disclosures of the present invention. Therefore, the scope of protection of the present invention should not be limited to The disclosure of the embodiments is intended to cover various alternatives and modifications of the inventions

Claims

A child safety seat support structure, comprising: an outer tube, a first inner tube, and a second inner tube;

The outer tube is provided with a plurality of first positioning holes on the same straight line, and the outer tube is sleeved outside the first inner tube and slides relative to the first inner tube;

The first inner tube is provided with a plurality of second positioning holes on the same straight line, and the first inner tube is sleeved outside the second inner tube and slides relative to the second inner tube;

a button is mounted on the second inner tube;

a first sliding positioning mechanism is disposed in the first inner tube, a second sliding positioning mechanism and a rotating mechanism are disposed in the second inner tube, and the button controls the rotation of the rotating mechanism to control the first sliding positioning mechanism and the second sliding positioning The mechanism slides and positions the first inner tube within the outer tube and the second inner tube at the first inner tube.
The child safety seat supporting leg structure according to claim 1, wherein the outer tube is further provided with a first locking pin positioning hole, and a first limiting mechanism positioning hole, the first locking pin positioning The hole and the first limiting mechanism positioning hole are all disposed on the outer tube.
The child safety seat support leg structure according to claim 2, wherein the outer tube is further provided with a first limiting mechanism, and the first limiting mechanism is installed outside the positioning hole of the first limiting mechanism. The lower end of the tube is internally and sleeved outside the first inner tube.
The child safety seat support leg structure according to claim 3, wherein the first slide positioning mechanism includes a first body and a second body that are connected, and the first body and the second body are formed The first limiting bosses, the first limiting mechanism resists the limiting bosses to prevent the first inner tube from falling out of the outer tube.
The child safety seat supporting leg structure according to claim 3, wherein the second body is provided with a first locking pin hole, and the first locking pin hole is provided with a first spring connected thereto and a first locking pin, the first locking pin being insertable into the first locking pin positioning hole.
The child safety seat supporting leg structure according to claim 1 or 5, wherein the first inner tube is provided with a second locking pin positioning hole, and the second limiting mechanism is positioned. The hole, the second locking pin positioning hole and the second limiting mechanism positioning hole are all disposed on the first inner tube.
The child safety seat supporting leg structure according to claim 6, wherein the first inner tube is further provided with a second limiting mechanism, and the second limiting mechanism is positioned by the second limiting mechanism The hole is installed inside the lower end of the first inner tube and sleeved outside the second inner tube.
The child safety seat support leg structure according to claim 7, wherein said second slide positioning mechanism comprises a third body and a fourth body that are connected, and said third body and said fourth body are formed a second limiting boss, the second limiting mechanism resisting the second limiting boss to prevent the second inner tube from falling out of the first inner tube.
The child safety seat supporting leg structure according to claim 7, wherein the fourth body is provided with a second locking pin hole, and the second locking pin hole is provided with a second spring connected thereto a second locking pin, the second locking pin being insertable into the second locking pin positioning hole.
The child safety seat support leg structure according to claim 1 or 9, wherein the rotation mechanism comprises a rotation fixing seat, a rotation connecting member provided on the rotation fixing seat, and the rotation connection a transmission mechanism on the piece, the transmission mechanism includes a first connecting rod and a second connecting rod, the rotating connecting member includes a first sleeve and a second sleeve connected, the first connecting rod penetrating the first A sleeve is coupled to the first slide positioning mechanism, and the second link rod extends through the second sleeve and is coupled to the second slide positioning mechanism.
The child safety seat support leg structure according to claim 10, wherein said first connecting rod comprises a first connecting rod and a first positioning pin connected, said first transmission rod penetrating said first a sleeve, the first positioning pin extends through the first sliding positioning mechanism and can be inserted into the first positioning hole.
A child safety seat support leg structure according to claim 10, wherein said second connecting rod includes a second connecting rod and a second positioning pin connected thereto, said second transmission rod extending through said first a second sleeve, the second positioning pin extends through the second sliding positioning mechanism and can be inserted into the second positioning hole.