Support base for child safety seat

Abstract

The present invention discloses a support base for a child safety seat, comprising: a support leg, a first locking mechanism, a second locking mechanism and a connecting assembly. The support leg includes three segments, which are telescopically connected to each other through a first sliding joint portion and a second sliding joint portion. The first locking mechanism includes a first latch member and a first actuating member. The first latch member can lock and unlock the first sliding joint portion, and the first actuating member can urge the first latch member to move to unlock the first sliding joint portion. The second locking mechanism includes a second latch member and a second actuating member. The second latch member can lock and unlock the second sliding joint portion, and the second actuating member can urge the second latch member to move to unlock the second sliding joint portion. The connecting assembly couples the first locking mechanism to the second locking mechanism, so that the first sliding joint portion and the second sliding joint portion can be synchronously unlocked via a single operation step.

Description

[0001] This application is a divisional application of the invention patent application with the application date of May 24, 2019, the application number of 201910440476.X, and the invention name of "Support Base for Child Safety Seat". Technical Field

[0002] The present invention relates to the technical field of infant products, and in particular to a support base for a child safety seat. Background Art

[0003] Currently, the child safety seats visible on the market may include a child seat that can be fixed to a support base for easy installation on an automobile seat. In some existing products, the support base may be equipped with a latch device to connect the support base to the automobile seat, thereby restricting the support base on the automobile seat. In addition, the support base may have support feet that can be extended to contact the automobile floor. When an automobile accident occurs, the support feet can transfer energy to the automobile floor. Since the automobile floor may not have a uniform height, the support feet usually have multiple segments that can be adjusted as needed to shorten or extend the length of the support feet. However, the structure of multiple segments usually requires the operation of multiple buttons to adjust the length of the support feet, which is prone to confusion in operation and may cause the support base to be improperly installed in the automobile.

[0004] Therefore, there is a current need for a support base that is more convenient to operate and at least improves the above deficiencies. Summary of the Invention

[0005] To achieve the above object, the technical solution of the present invention is: to provide a support base for a child safety seat, including: a support leg that can be extended and retracted at the bottom of the support base, the support leg includes a plurality of segments, and the plurality of segments are telescopically connected to each other through a plurality of sliding joints, the plurality of sliding joints include a first sliding joint and a second sliding joint, and each of the first sliding joint and the second sliding joint couples adjacent segments among the plurality of segments; a first locking mechanism, including a first latch and a first actuator connected to each other, the first latch can lock the first sliding joint to prevent relative sliding of the adjacent segments of the first sliding joint, and the first latch can unlock the first sliding joint so that the adjacent segments of the first sliding joint can relatively slide and adjust, and the first actuator can cause the first latch to move to unlock the first sliding joint; a second locking mechanism, including a second latch and a second actuator connected to each other, the second latch can lock the second sliding joint to prevent relative sliding of the adjacent segments of the second sliding joint, and the second latch can unlock the second sliding joint so that the adjacent segments of the second sliding joint can relatively slide and adjust, and the second actuator can cause the second latch to move to unlock the second sliding joint; and a connection assembly that couples the first locking mechanism to the second locking mechanism, so that when the first actuator moves to cause the first latch to unlock the first sliding joint, it can drive the second actuator to move synchronously to cause the second latch to unlock the second sliding joint.

[0006] According to an embodiment, the first actuator and the second actuator can move in the same direction to cause the first latch and the second latch to unlock the first sliding joint and the second sliding joint respectively.

[0007] According to an embodiment, the first latch and the second latch slide parallel to each other to lock and unlock the first sliding joint and the second sliding joint respectively, and the first actuator and the second actuator can move in the same direction to cause the first latch and the second latch to unlock the first sliding joint and the second sliding joint respectively.

[0008] According to an embodiment, the first latch and the first actuator are assembled with one of the adjacent segments of the first sliding joint, so that the first latch and the first actuator can slide along a first axis and a second axis perpendicular to each other respectively.

[0009] According to an embodiment, the first actuator includes a guiding groove that is inclined at an angle with respect to the second axis, the first latch has a protruding pin, and the protruding pin can be guided to slide along the guiding groove.

[0010] According to one embodiment, the first actuating member is slidable in a first direction to urge the first latch member to lock the first sliding joint portion, and is slidable in a second direction opposite to the first direction to urge the first latch member to unlock the first sliding joint portion.

[0011] According to one embodiment, the first locking mechanism further includes a spring and an actuating button. The spring is connected to the first actuating member and can urge the first actuating member to slide in the first direction, while the actuating button can push the first actuating member to slide in the second direction.

[0012] According to one embodiment, the second latch member and the second actuating member are assembled with one of the adjacent segment portions of the second sliding joint portion in a manner similar to the first latch member and the first actuating member.

[0013] According to one embodiment, the connecting assembly is connected to the first locking mechanism, extends along the longitudinal axis of the support leg, bypasses the second locking mechanism after extending beyond it, and then returns and is connected to the second locking mechanism.

[0014] According to one embodiment, the first latch member and the first actuating member are assembled with the first segment portion of the support leg, the second latch member and the second actuating member are assembled with the second segment portion of the support leg, and the connecting assembly includes a sheath and a cable. The cable is slidably passed through the interior of the sheath. The first end portion and the second end portion of the sheath are respectively fixed to the first actuating member and the second segment portion, while the third end portion and the fourth end portion of the cable are respectively fixed to the first segment portion and the second actuating member.

[0015] According to one embodiment, the connecting assembly forms a loop portion between the first end portion and the second end portion of the sheath. When the first actuating member moves to urge the first latch member to unlock the first sliding joint portion, the length of the loop portion will be changed, thereby forcing the cable to move correspondingly relative to the sheath and pulling the second actuating member to slide, so as to urge the second latch member to move and unlock the second sliding joint portion.

[0016] According to one embodiment, the plurality of segment portions include a first segment portion, a second segment portion, and a third segment portion. The first sliding joint portion couples the first segment portion and the second segment portion, the second sliding joint portion couples the second segment portion and the third segment portion. The first latch member and the first actuating member are assembled with the first segment portion, and the second latch member and the second actuating member are assembled with the second segment portion.

[0017] According to one embodiment, the first actuating member is movable to urge the first latch member to move to unlock the first sliding joint portion.

[0018] According to one embodiment, the second actuator is movable to cause the second latch member to move to unlock the second sliding joint portion.

[0019] According to one embodiment, the first actuator is movable to cause the first latch member to move to unlock the first sliding joint portion and, at the same time, cause the second latch member to move to unlock the second sliding joint portion.

[0020] According to one embodiment, the support base further includes an actuator button. When the actuator button is pressed, it can cause the first locking mechanism and the second locking mechanism to be unlocked.

[0021] According to one embodiment, the plurality of segments includes a first segment, a second segment, and a third segment. The first segment is coupled to the second segment through the first sliding joint portion, and the second segment is coupled to the third segment through the second sliding joint portion. The third segment is pivotally connected to the housing of the support base. And the support base includes an actuator button that is assembled with the first segment near the distal end of the first segment, and the actuator button can be operated to actuate the first actuator. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 FIG. shows a side view of a support base for a child safety seat according to an embodiment of the present invention.

[0023] Figure 2 FIG. shows Figure 1 a perspective view of the support feet provided in the support base of.

[0024] Figure 3 FIG. shows an exploded view of the two locking mechanisms provided in the support feet. DETAILED DESCRIPTION

[0025] Figure 1 FIG. shows a side view of a support base 100 for a child safety seat according to an embodiment of the present invention. Refer to Figure 1 , the support base 100 may include a housing 102, a plurality of locking devices 104, and a support foot 106. The housing 102 may include one or more rigid housing portions fixedly connected to each other. Materials suitable for making the housing 102 include, for example, rigid plastics. The housing 102 may have a bottom 108 adapted to be placed on an automobile seat and an upper surface 110 adapted to mount a child seat (not shown). For example, the upper surface 110 of the housing 102 may include a plurality of grooves 112, and the grooves 112 may accommodate corresponding portions of the child seat to lock the child seat in a fixed position. According to some embodiments, the upper surface 110 of the housing 102 may be carried by a sliding platform, and the sliding platform may move back and forth relative to the lower portion of the housing 102 to adjust the child seat mounted on the support base 100.

[0026] The locking device 104 can be assembled with the housing 102 at an end 114A adjacent to the housing 102, and is respectively disposed on the left and right sides of the housing 102. The locking device 104 can be detachably engaged with an anchoring structure (such as an ISOFIX anchor) in the vehicle to facilitate fixing the support base 100 to the vehicle seat.

[0027] Refer to Figure 1 , the support leg 106 is connected to the housing 102 at an end 114B opposite to the end 114A, and can be extended and retracted at the bottom 108 of the support base 100. In use, the support leg 106 can protrude downward from the bottom 108 to contact the floor of the vehicle. When the support leg 106 is not in use, the support leg 106 can be retracted toward the bottom 108 of the housing 102.

[0028] Cooperate with Figure 1 , Figure 2 A perspective view showing the structure of the support leg 106 is illustrated. Refer to Figure 1 and Figure 2 , the support leg 106 has a longitudinal axis Z and includes a plurality of segments 116. Among them, the plurality of segments 116 can be telescopically connected to each other through a plurality of sliding joints 118. The segments 116 can be made of a rigid material, such as including a metal material. According to an embodiment, the support leg 106 can include three segments 116A, 116B, and 116C. The sliding joint 118A can couple two adjacent segments 116A and 116B. Another sliding joint 118B can couple two adjacent segments 116B and 116C. In addition, the segment 116C can be pivotally connected to the housing 102 about a pivot axis X. Thereby, the support leg 106 can rotate relative to the housing 102 to be folded toward the bottom 108 of the housing 102 or unfolded downward for use. And the segments 116A, 116B, and 116C can slide relative to each other along the longitudinal axis Z to extend or shorten the support leg 106. When the support leg 106 is extended for use, the segment 116B can form an intermediate segment extending between the segment 116A and the segment 116C, and the segments 116A and 116C respectively form the bottom segment and the top segment of the support leg 106. When the support leg 106 is shortened, the segment 116A can be indented into the interior of the segment 116B, and the segment 116B can be indented into the interior of the segment 116C to shorten the support leg 106.

[0029] Cooperate with Figure 1 and Figure 2 , Figure 3 An exploded view showing the locking mechanisms 120 and 122 provided in the support leg 106 is illustrated. Refer to Figures 1-3, the locking mechanism 120 can lock and unlock the sliding joint portion 118A (i.e., lock and unlock the segment portion 116A relative to the segment portion 116B), and the locking mechanism 122 can lock and unlock the sliding joint portion 118B (i.e., lock and unlock the segment portion 116B relative to the segment portion 116C).

[0030] Refer to Figures 1-3 , the locking mechanism 120 can be assembled with the segment portion 116A and can include two latch members 124, an actuator 126, a spring 128, and an actuator button 130.

[0031] The latch member 124 can lock the sliding joint portion 118A to prevent relative sliding between the adjacent segment portions 116A and 116B of the sliding joint portion 118A, and can unlock the sliding joint portion 118A so that the adjacent segment portions 116A and 116B of the sliding joint portion 118A can slide and adjust relative to each other. According to an embodiment, the latch member 124 can be assembled with the segment portion 116A so that each latch member 124 can move relative to the segment portion 116A to engage or disengage with any one of a plurality of openings 132 provided on the segment portion 116B, thereby locking or unlocking the sliding joint portion 118A respectively. For example, the segment portion 116A can be fixedly connected to a support mounting portion 134, and the latch member 124 can be assembled with the support mounting portion 134 of the segment portion 116A so that the latch member 124 can slide laterally along an axis Y1 that is substantially perpendicular to the longitudinal axis Z of the support leg 106. The latch members 124 can slide away from each other to engage with two openings 132 and lock the sliding joint portion 118A, and can slide towards each other to disengage from the openings 132 and unlock the sliding joint portion 118A.

[0032] Refer to Figure 3 , the actuator 126 can be assembled with the segment portion 116A so that the actuator 126 can slide relative to the segment portion 116A along the longitudinal axis Z of the support leg 106. According to an embodiment, the actuator 126 can be a single elongated member. The actuator 126 can have one or more guiding grooves 127, and the support mounting portion 134 can have one or more pins 129 that slide through the guiding grooves 127 correspondingly, so that the actuator 126 can be guided to slide along the longitudinal axis Z. In addition, the actuator 126 can be connected to the latch member 124 and can cause the latch member 124 to move to unlock the sliding joint portion 118A. For example, the actuator 126 can have two symmetric guiding grooves 136 that are inclined at an angle relative to the longitudinal axis Z. The latch members 124 can be fixedly connected to the protruding pins 138 respectively, and the protruding pins 138 are respectively guided to slide along the guiding grooves 136. The actuator 126 can thereby slide relative to the segment portion 116A in a first direction D1 to cause the latch member 124 to lock the sliding joint portion 118A, and can slide in a second direction D2 opposite to the first direction D1 to cause the latch member 124 to unlock the sliding joint portion 118A.

[0033] Refer toFigure 3 The spring 128 can be connected to the segment portion 116A and the actuator 126 respectively. The spring 128 can urge the actuator 126 to slide in the first direction D1, so as to urge the latch member 124 to lock the sliding connection portion 118A.

[0034] Refer to Figure 2 and Figure 3 The actuating button 130 can be exposed on the segment portion 116A for operation, and can push the actuator 126 to slide in the second direction D2, so as to urge the actuator 124 to unlock the sliding connection portion 118A. For example, the actuating button 130 can be slidably connected to the segment portion 116A near the distal end of the segment portion 116A, and can contact the inclined surface 140 of the actuator 126 to push the actuator 126 to slide in the second direction D2.

[0035] Refer to Figure 3 The locking mechanism 122 can be assembled with the segment portion 116B, and can include two latch members 144, an actuator 146 and a spring 148. The latch members 144 and the actuator 46 can be assembled with the segment portion 116B in a manner similar to the aforementioned latch member 124 and actuator 126.

[0036] Refer to Figure 3 The latch member 144 can lock the sliding connection portion 118B to prevent the adjacent segment portions 116B and 116C of the sliding connection portion 118B from sliding relative to each other, and can unlock the sliding connection portion 118B so that the adjacent segment portions 116B and 116C of the sliding connection portion 118B can slide and adjust relative to each other. The latch member 144 can be assembled with the segment portion 116B so that each latch member 144 can move relative to the segment portion 116B to engage or disengage with any one of a plurality of openings 152 provided on the segment portion 116C, thereby locking or unlocking the sliding connection portion 118B respectively. For example, the segment portion 116B can be fixedly connected to a support mounting portion 154, and the latch member 144 can be assembled with the support mounting portion 154 of the segment portion 116B so that the latch member 144 can slide laterally along an axis Y2 that is substantially perpendicular to the longitudinal axis Z of the support leg 106. The axis Y2 along which the latch member 144 moves can be parallel to the axis Y1 along which the latch member 124 moves. Similarly, the latch members 144 can slide away from each other to engage with the two openings 152 and lock the sliding connection portion 118B, and can slide towards each other to disengage from the openings 152 and unlock the sliding connection portion 118B.

[0037] The actuator 146 can be assembled with the segment 116B such that the actuator 146 can slide relative to the segment 116B along the longitudinal axis Z of the support leg 106. According to an embodiment, the actuator 146 can be a single elongated component. The actuator 146 can have one or more guiding slots 147, and the support mounting portion 154 can have one or more pins 149 that slide correspondingly through the guiding slots 147, enabling the actuator 146 to be guided to slide along the longitudinal axis Z. In addition, the actuator 146 can be connected to the latch 144 and can cause the latch 144 to move to unlock the sliding joint portion 118B. For example, the actuator 146 can have two symmetrical guiding slots 156 that are inclined at an angle with respect to the longitudinal axis Z. The latch 144 can be fixedly connected to the protruding pins 158 respectively, and the protruding pins 158 are respectively guided to slide along the guiding slots 156. Thereby, the actuator 146 can slide relative to the segment 116B in the first direction D1 to cause the latch 144 to lock the sliding joint portion 118B, and can slide in the second direction D2 opposite to the first direction D1 to cause the latch 144 to unlock the sliding joint portion 118B.

[0038] Referring to Figure 3 , the spring 148 can be connected to the segment 116B and the actuator 146 respectively. The spring 148 can urge the actuator 146 to slide in the first direction D1 to cause the latch 144 to lock the sliding joint portion 118B.

[0039] With the above structure, the latch 124 of the locking mechanism 120 and the latch 144 of the locking mechanism 122 can slide parallel to each other to lock and unlock the two sliding joint portions 118A and 118B respectively, and the actuators 126 and 146 can move in the same direction D2 to cause the latches 124 and 144 to unlock the two sliding joint portions 118A and 118B respectively.

[0040] Referring to Figure 3 , the two locking mechanisms 120 and 122 are coupled to each other via a connecting assembly 160 such that when the actuator 126 moves to cause the latch 124 to unlock the sliding joint portion 118A, it can drive the actuator 146 to move synchronously to cause the latch 144 to unlock the sliding joint portion 118B. Therefore, the two locking mechanisms 120 and 122 can be unlocked simultaneously by a single operation step. According to an embodiment, the connecting assembly 160 can include a sheath 162 and a cable 164. The sheath 162 has two opposite ends 162A and 162B, and the cable 164 also has two opposite ends 164A and 164B. The cable 164 is slidably passed through the interior of the sheath 162, and the two ends 164A and 164B of the cable 164 extend out of the two ends 162A and 162B of the sheath 162 respectively. In the connecting assembly 160, the cable 164 and the sheath 162 can slide relative to each other.

[0041] The connecting assembly 160 can be connected to the locking mechanism 120, extend along the longitudinal axis Z of the support leg 106 beyond the locking mechanism 122 and then loop back and be connected to the locking mechanism 122. More specifically, the end 162A of the sheath 162 can be fixedly connected to the coupling structure 166 provided on the actuator 126, and the end 162B of the sheath 162 can be fixedly connected to the section 116B (for example, the end 162B can be fixedly connected to the support mounting portion 154). The end 164A of the cable 164 can be fixedly connected to the section 116A (for example, the end 164A can be fixedly connected to the support mounting portion 134 of the section 116A), and the end 164B of the cable 164 can be fixedly connected to the actuator 146. Therefore, the end 162A of the sheath 162 and the actuator 126 move synchronously relative to the section 116A, the end 164B of the cable 164 and the actuator 146 move synchronously relative to the section 116B, and the end 162B of the sheath 162 and the end 164A of the cable 164 are movably coupled to the section 116B and 116A respectively. After the connecting assembly 160 is connected to the locking mechanisms 120 and 122, the connecting assembly 160 can form a loop portion 168 between the two ends 162A and 162B of the sheath 162 and between the two ends 164A and 164B of the cable 164. According to an embodiment, the connecting assembly 160 can pass through the channel provided in the support mounting portion 154, the end 162B of the sheath 162 can be fixedly connected to the coupling structure 170 provided on the support mounting portion 154, and the loop portion 168 can be formed by a part of the connecting assembly 160 that extends between the channel of the support mounting portion 154 and the coupling structure 170 to the outside of the support mounting portion 154. The loop portion 168 formed by the connecting assembly 160 can protrude in the support leg 106 in a direction away from the two locking mechanisms 120 and 122.

[0042] With the above structure, the caregiver can unlock the two locking mechanisms 120 and 122 by pressing the actuation button 130 to adjust the length of the support leg 106. When the actuation button 130 is pressed, the actuation button 130 can push the actuator 126, causing the actuator 126 to slide in the direction D2 to prompt the latch 124 to move and unlock the sliding joint portion 118A. The sliding of the actuator 126 in the direction D2 can drive the actuator 146 to slide in the same direction D2 via the connecting assembly 160 to prompt the latch 144 to move and unlock the sliding joint portion 118B. More specifically, when the actuator 126 and the end portion 162A of the sheath 162 slide in the direction D2 relative to the segment portion 116A, the length of the loop portion 168 can be changed, increasing the length of the loop portion 168, thereby forcing the cable 164 to move correspondingly relative to the sheath 162 and pulling the actuator 146 to slide in the same direction D2 to prompt the latch 144 to move and unlock the sliding joint portion 118B. Therefore, the two sliding joint portions 118A and 118B can be unlocked by a single operation step to adjust the support leg 106. After the support leg 106 is adjusted to the desired length, the elastic forces of the springs 128 and 148 can respectively prompt the latches 124 and 144 to move and lock the sliding joint portions 118A and 118B.

[0043] The advantages of the support base for a child safety seat described herein include a support leg having a plurality of segment portions, wherein the plurality of segment portions can be locked by two locking mechanisms and unlocked by a single operation step for adjustment. Therefore, the support leg is more convenient to operate for adjustment.

[0044] Certain embodiments of the support base for a child safety seat have been described above. These embodiments are only the preferred embodiments of the present invention and, of course, cannot be used to limit the scope of the rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention still fall within the scope covered by the present invention.

[0045] The above-disclosed are only the preferred embodiments of the present invention and, of course, cannot be used to limit the scope of the rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention still fall within the scope covered by the present invention.

Claims

1. A support base for a child safety seat, characterized in that, comprising: A support leg that can be extended and retracted at the bottom of the support base, the support leg includes a plurality of segments, the plurality of segments are telescopically connected to each other through a plurality of sliding joints, the plurality of sliding joints include a first sliding joint and a second sliding joint, and each of the first sliding joint and the second sliding joint couples adjacent segments among the plurality of segments that are adjacent to each other; A first locking mechanism, including a first latch and a first actuator connected to each other, the first latch can lock the first sliding joint to prevent relative sliding of the adjacent segments of the first sliding joint, and the first latch can unlock the first sliding joint so that the adjacent segments of the first sliding joint can relatively slide and adjust, and the first actuator can urge the first latch to move to unlock the first sliding joint; A second locking mechanism, including a second latch and a second actuator connected to each other, the second latch can lock the second sliding joint to prevent relative sliding of the adjacent segments of the second sliding joint, and the second latch can unlock the second sliding joint so that the adjacent segments of the second sliding joint can relatively slide and adjust, and the second actuator can urge the second latch to move to unlock the second sliding joint; and A connecting assembly that couples the first locking mechanism to the second locking mechanism, so that when the first actuator moves to urge the first latch to unlock the first sliding joint, it can drive the second actuator to move synchronously to urge the second latch to unlock the second sliding joint; wherein the first latch, the first actuator are assembled with the first segment of the support leg, the second latch, the second actuator are assembled with the second segment of the support leg, and the connecting assembly includes a sheath and a cable, the cable can slide through the interior of the sheath, the first end and the second end of the sheath are respectively fixed to the first actuator and the second segment, and the third end and the fourth end of the cable are respectively fixed to the first segment and the second actuator, the first segment is fixed to the support mounting portion, and the first latch is assembled with the support mounting portion of the first segment, so that the first latch can slide transversely along an axis substantially perpendicular to the longitudinal axis of the support leg.

2. The support base according to claim 1, characterized in that: The first actuator and the second actuator can move in the same direction to urge the first latch and the second latch to unlock the first sliding joint and the second sliding joint respectively.

3. The support base according to claim 1, characterized in that: The first latch and the second latch slide parallel to each other to lock and unlock the first sliding joint and the second sliding joint respectively, and the first actuator and the second actuator can move in the same direction to urge the first latch and the second latch to unlock the first sliding joint and the second sliding joint respectively.

4. The support base according to claim 1, wherein: the first latch member, the first actuating member are assembled with the first section, enabling the first latch member and the first actuating member to slide along a first axis and a second axis perpendicular to each other respectively.

5. The support base according to claim 4, wherein: the first actuating member includes a guiding groove which is inclined at an angle with respect to the second axis, the first latch member has a protruding pin, and the protruding pin can be guided to slide along the guiding groove.

6. The support base according to claim 5, wherein: the first actuating member can slide in a first direction to urge the first latch member to lock the first sliding connection part, and can slide in a second direction opposite to the first direction to urge the first latch member to unlock the first sliding connection part.

7. The support base according to claim 6, wherein: the first locking mechanism further includes a spring and an actuating button, the spring is connected to the first actuating member and can urge the first actuating member to slide in the first direction, and the actuating button can push the first actuating member to slide in the second direction.

8. The support base according to claim 6, wherein: the second latch member and the second actuating member are assembled with the second section in a manner similar to that of the first latch member and the first actuating member.

9. The support base according to claim 1, wherein: the connecting assembly is connected to the first locking mechanism, extends along the longitudinal axis of the support leg and extends beyond the second locking mechanism and then turns back and is connected to the second locking mechanism.

10. The support base according to claim 1, wherein: the connecting assembly forms a loop between the first end and the second end of the sheath, and when the first actuating member moves to urge the first latch member to unlock the first sliding connection part, it will change the length of the loop, thereby forcing the cable to move correspondingly relative to the sheath and pulling the second actuating member to slide, so as to urge the second latch member to move and unlock the second sliding connection part.

11. The support base according to claim 1, wherein: the first sliding connection part couples the first section and the second section, and the second sliding connection part couples the second section and a third section of one of the support legs.

12. The support base according to claim 1, wherein: the first actuating member can move to urge the first latch member to move and unlock the first sliding connection part.

13. The support base according to claim 12, wherein: the second actuating member can move to urge the second latch member to move and unlock the second sliding connection part.

14. The support base according to claim 1, wherein: the first actuating member can move to urge the first latch member to move and unlock the first sliding connection part, and at the same time urge the second latch member to move and unlock the second sliding connection part.

15. The support base according to claim 1, wherein: It further includes a uniform actuating button, which can prompt the unlocking of the first locking mechanism and the second locking mechanism when pressed.

16. The support base according to claim 1, characterized in that: The first section is coupled to the second section through the first sliding connection section, and the second section is coupled to a third section through the second sliding connection section; The third section is pivotally connected to the housing of the support base; and The support base includes a uniform actuating button, which is assembled with the first section near the distal end of the first section, and the actuating button can actuate the first actuating member through operation.

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