CN110481620A - Tripper and perambulator - Google Patents

Abstract

The invention discloses an unlocking device and a baby carriage, wherein the unlocking device is used for unlocking a locking device arranged between an movably connected base frame and a movable frame, and the movable frame comprises a first rod and a second rod that are relatively sliding and telescopic along the length direction , the first rod is connected with the base frame, and the unlocking device includes an unlocking push rod slidingly arranged on the first rod, an unlocking push rod reset piece, and a rotating top block rotatably arranged on the second rod. In the out state, the unlocking push rod and the driving end of the rotating top block are separated from each other; when the movable frame is in the retracted state, the driving end of the rotating top block is connected to the unlocking push rod, and the unlocking can be driven when the rotating top block is driven to rotate. The push rod moves to unlock the locking device. When the unlocking device is used on a stroller, it does not affect the retraction function of the push rod assembly itself along the length direction, so that the stroller has a longer push height and a smaller folding size, and can make the unlocking operation simple and easy.

Description

Unlocking device and stroller

technical field

The invention relates to an unlocking device for a baby carriage and a baby carriage.

Background technique

Existing strollers typically include a bar and a locking device for locking the bar. For example, a stroller includes a push rod assembly, and in order to be able to fold to facilitate the storage and transportation of the stroller, the push rod assembly is usually rotatably connected to the bottom frame, which is mainly composed of a front wheel bracket provided with a front wheel assembly and a bottom frame. It is composed of a rear wheel bracket provided with a rear wheel assembly; in order to make the stroller stably unfold, a locking device is provided between the push rod assembly and the bottom frame to make the push rod stable in the unfolded state; The locking mechanism is unlocked to allow the push rod assembly to rotate when the stroller is folded.

In the prior art, mostly by disposing an unlocking handle on the top of the push rod and connecting it with the locking member in the locking device through a traction cable, when the unlocking handle is pressed to tighten the traction cable, the locking member can be moved so that the push rod assembly is connected to the bottom. The locking device between the brackets is unlocked, which results in that the length of the push rod assembly needs to be fixed, and the push rod assembly can no longer be retracted during the folding process to reduce the size of the folded frame.

SUMMARY OF THE INVENTION

The purpose of the present invention is to overcome the defects of the prior art and provide a novel unlocking device for unlocking the locking device in children's products such as baby carriages.

In order to achieve the above object, the technical solution adopted in the present invention is: an unlocking device for unlocking the locking device, and the locking device is arranged between the movably connected base frame and the movable frame for locking between the two , the movable frame includes a first rod and a second rod that are relatively sliding and telescopic along the length direction, the first rod is connected with the base frame, and the unlocking device includes:

an unlocking push rod, which is movably disposed on the first rod along the length direction of the first rod, and can unlock the locking device when moving toward the base frame;

an unlocking push rod reset part, used for providing the elastic force required for the unlocking push rod to move away from the base frame;

a rotating top block, the rotating top block is rotatably connected to the second rod around a rotating shaft, the rotating top block has a driving end, and there is a distance between the driving end and the axis line of the rotating shaft;

The movable frame has an extended state and a retracted state. When the movable frame is in the extended state, the unlocking push rod and the driving end of the rotating top block are disengaged from each other; when the movable frame is in the retracted state , the driving end of the rotating top block is connected to the unlocking push rod,

The unlocking device further includes an unlocking drive member for driving the rotating top block to rotate to push the unlocking push rod toward the base frame when the movable frame is in a retracted state.

Preferably, the rotating top block further has an unlocking end, the unlocking end and the driving end are respectively disposed on different sides of the axis line of the rotating shaft, and the unlocking driving member is connected with the unlocking end.

Further, the unlocking driving member includes an unlocking operation member movably arranged on the second rod, and a traction cable tensioned between the unlocking operation member and the unlocking end.

Further, the unlocking device further includes a rotating top block restoring member for driving the rotating top block to rotate so that the driving end moves away from the unlocking push rod with a required elastic force.

Preferably, the movable frame extends in the up-down direction, the lower part of the second rod is slidably inserted into the rod cavity of the first rod, and the rotating top block is rotatably disposed on the lower end of the second rod In the rod cavity of the first rod, the lower end of the second rod is located in the rod cavity of the first rod.

Further, the unlocking push rod is slidably disposed in the rod cavity of the first rod along the extending direction of its own length, and when the movable frame is in a retracted state, the top end of the unlocking push rod abuts against the on the drive end.

Preferably, the movable frame and the base frame are rotatably connected around a rotation axis, and the locking device at least includes a locking member, and the locking member can be linearly moved along an axial direction perpendicular to the rotation shaft, When the unlocking push rod moves toward the base frame, the unlocking push rod pushes the locking member to move so that the locking device is converted from a locked state to an unlocked state.

Further, the locking member has a pushing protrusion, and when the unlocking push rod moves toward the base frame, the end of the unlocking push rod abuts on the pushing protrusion.

Another object of the present invention is to provide a baby carriage with the above unlocking device.

In order to achieve the above purpose, the technical solution adopted in the present invention is: a baby carriage, which includes a base frame and a movable frame that are movably connected, and also includes the above-mentioned unlocking device.

Preferably, the movable frame is a push rod assembly, the base frame includes a front support with a front wheel assembly at the bottom and a rear support with a rear wheel assembly at the bottom, and the lower part of the push rod assembly is rotatably connected to the The upper part of the front bracket is either rotatably connected to the upper part of the rear bracket, or the lower part of the push rod assembly, the upper part of the front bracket and the upper part of the rear bracket are rotatably connected to each other and locked by the locking device.

Due to the application of the above technical solutions, the present invention has the following advantages compared with the prior art: the unlocking device of the present invention can be arranged on the movable frame with the function of changing the length, and when the movable frame is shortened, the unlocking device can be used for the movable frame and the movable frame. The unlocking of the locking device between the base frames has a simple structure, which does not affect the use of the length changing function of the movable frame itself during use, and can effectively unlock the locking device. When the unlocking device is used on a stroller, it does not affect the retraction function of the push rod assembly itself along the length direction, so that the stroller has a longer push height and a smaller folding size, and can make the unlocking operation simple and easy.

Description of drawings

Accompanying drawing 1 is the perspective view of the baby carriage of the present embodiment in the unfolded state;

2 is a schematic diagram of the internal structure of the stroller of the present embodiment in an unfolded state, wherein the push rod assembly is in an extended state;

3 is a schematic exploded view of the structure of the unlocking device in the stroller of the present embodiment;

Accompanying drawing 4 is the schematic diagram that the push rod assembly in the stroller in accompanying drawing 2 is converted to the retracted state;

5 is a schematic diagram of the unlocking principle of the unlocking device in the stroller of the present embodiment;

Figure 6 and Figure 7 show the connection and unlocking principle between the unlocking device and the locking device in the stroller of the present embodiment;

8 is a schematic diagram of the internal structure of the stroller of the present embodiment in a folded state;

9 is a schematic exploded view of the structure of the locking device used in this embodiment;

10 is a schematic structural diagram of the unlocking member in the locking device adopted in this embodiment;

11 is a schematic diagram of the internal structure of the locking device used in this embodiment, wherein the locking device is in a locked state;

12 is a schematic diagram of the internal structure of the locking device used in this embodiment, wherein the locking device is in an unlocked state;

Among them: 10, base frame; 101, front bracket; 101a, locking chute one; 102, rear bracket; 2, movable frame (push rod assembly); 201, lower push rod (first rod); 201a, locking chute Two; 202, upper push rod (second rod); 203, push rod locking piece; 30, front wheel assembly; 40, rear wheel assembly; 50, rotating shaft; 1, rotating top block; 11, driving end; 12, Unlocking end; 2. Rotating shaft; 3. Resetting part of rotating top block (torsion spring); 4. Unlocking push rod; 5. Unlocking push rod restoring part (spring); 6. Traction cable; 7. Unlocking operating part; 8. Locking piece; 81. Pushing projection; 82. Locking projection; 9. Locking piece return spring.

Detailed ways

The technical solutions of the present invention will be further elaborated below with reference to the accompanying drawings and specific embodiments.

Referring to the stroller shown in FIGS. 1 to 8 , it includes a base frame 10 and a movable frame 20 that are movably connected. The base frame 10 and the movable frame 20 are locked by a locking device, and the movable frame 20 includes a relatively sliding telescopic connection along the length direction. The first rod 201 and the second rod 202 are connected, wherein the first rod 201 is connected with the base frame 10 , and the locking device is arranged between the first rod 201 and the base frame 10 .

In the stroller of this embodiment, the base frame 10 includes a front support 101 with a front wheel assembly 30 at the bottom, and a rear support 102 with a rear wheel assembly 40 at the bottom; the movable frame 20 is a push rod assembly, and the first rod 201 is a push down rod The second rod 202 is an upper push rod. The upper push rod 202 and the lower push rod 201 are slidably arranged and locked by a push rod locking member 203, so that the push rod assembly can be locked in different positions. down the length. The lower part of the lower push rod 201 is rotatably connected with the upper part of the front bracket 101 and the upper part of the rear bracket 102 and is locked by a locking device.

The unlocking device of the present invention is used to unlock the above-mentioned locking device. Specifically, as shown in FIGS. 2 to 8 , the unlocking device includes:

The unlocking push rod 4 is arranged on the lower push rod 201 so as to be movable along the length direction of the lower push rod 201, and the unlocking push rod 4 can unlock the locking device when it moves downward toward the base frame 10;

The unlocking push rod reset member 5 is used to provide the elastic force required for the unlocking push rod 4 to move away from the base frame 10, and here specifically adopted is a spring sleeved on the unlocking push rod 4;

A rotating top block 1, the rotating top block 1 is rotatably connected to the upper push rod 202 around the rotating shaft 2, the rotating top block 1 has a driving end 11, and there is a distance between the driving end 11 and the axis line of the rotating shaft 2 set up.

The push rod assembly 20 has an extended state and a retracted state. Referring to FIG. 2 , the push rod assembly 20 is in an extended state. The driving ends 11 of the rotating top block 1 are disengaged from each other, and the rotation of the rotating top block 1 will not act on the unlocking push rod 4 . Referring to FIG. 4 and FIG. 5 , the push rod assembly 20 is converted into a retracted state, and the total length of the push rod assembly 20 is reduced. At this time, the driving end 11 of the rotating top block 1 is connected to the unlocking push rod 4, which drives the rotating top block. When 1 rotates, the driving end 11 will exert force on the unlocking push rod 4 to drive the unlocking push rod 4 to move downward along the lower push rod 201 , thereby unlocking the locking device.

The unlocking device further includes an unlocking drive member for driving the rotating top block 1 to rotate when the push rod assembly 20 is in a retracted state to push the unlocking push rod 4 to move toward the base frame 10 to unlock the locking device. Referring to the drawings, specifically, the rotating top block 1 also has an unlocking end 12, and the unlocking end 12 and the driving end 11 are respectively arranged on different sides of the axis line of the rotating shaft 2, and the unlocking driving member is connected with the unlocking end 12, It is used to drive the rotating top block 1 to rotate. In this embodiment, the unlocking driving member includes an unlocking operating member 7 movably arranged on the upper push rod 202, and a traction cable 6 tensioned between the unlocking operating member 7 and the unlocking end 12. Here, the unlocking operation Component 7 adopts an unlocking knob that is slidably arranged on the top of the upper push rod 202. By pressing the unlocking knob, the traction cable 6 can be pulled to move upward, and the unlocking end 12 can be driven to rotate upwardly around the rotating shaft 2, so that the driving end 11 Go down and push the unlocking push rod 4 downward, and then drive the unlocking push rod 4 to move downward toward the base frame 10 .

The unlocking device also includes a rotating top block restoring member 3 for driving the rotating top block 1 to rotate so that the driving end 11 moves away from the unlocking push rod 4 with the required elastic force. Here, the rotating top block restoring member 3 is sleeved on the rotating shaft. 2 on the torsion spring.

Referring to the drawings, in this embodiment, the lower part of the upper push rod 202 is slidably inserted into the rod cavity of the lower push rod 201 , and the rotating top block 1 is rotatably arranged in the rod cavity of the lower end of the upper push rod 202 , and the lower end of the upper push rod 202 is located in the rod cavity of the lower push rod 201; the length extension direction of the unlocking push rod 4 is consistent with the length direction of the lower push rod 201, and the unlocking push rod 4 is slidably arranged in the lower push rod 4 along its own length direction. In the rod cavity of the push rod 201 , the rod cavity of the lower push rod 201 is further provided with a guide structure for providing sliding guidance for the unlocking push rod 4 . When the push rod assembly 20 is in the retracted state, the top end of the unlocking push rod 4 abuts on the driving end 11 of the rotating top block 1 .

Referring to FIG. 6 and FIG. 7 , in this embodiment, the lower part of the lower push rod 201 is connected with the upper part of the front bracket 101 and the upper part of the rear bracket 102 to rotate together around the rotating shaft 50 , and the locking device is used between the above three lock. The locking device includes at least a locking member 8 which can be linearly moved along an axial direction perpendicular to the rotation axis 50 . When the unlocking push rod 4 moves towards the base frame 10 , the unlocking push rod 4 pushes the locking member 8 to move so as to move. The locking device is switched from the locked state to the unlocked state. The locking member 8 is provided with a pushing protrusion 81 . When the unlocking push rod 4 moves toward the base frame 10 , the lower end of the unlocking push rod 4 abuts on the pushing protrusion 81 to drive the locking member 8 to slide and unlock.

Referring to FIGS. 9 to 12 , in the locking device used in this embodiment, the locking member 8 is slidably disposed on the upper portion of the rear bracket 102 along the extending direction of its own length, and locking protrusions are provided on both ends of the locking member 8 From 82, the upper part of the front bracket 101 is provided with a locking chute 1 101a, and the lower part of the lower push rod 201 is provided with a second locking chute 201a. The lock groove portion of the cam, and the arc-shaped guide portion that provides the sliding of the locking protrusion 82 . When the locking device is in the locked state, under the action of the reset spring 9 of the locking member, the locking protrusion 82 is inserted into the locking groove and is in the locked state; when the unlocking push rod 4 moves downward, the locking member 8 moves downward. At this time, the locking protrusion 82 withdraws from the locking groove portion and reaches the arc-shaped guide portion. At this time, the locking device is converted into an unlocked state, so that the front bracket 101 , the rear bracket 102 and the lower push rod 201 can rotate relative to each other.

In this way, when the stroller is unfolded for use, the upper push rod 202 of the push rod assembly 20 is in an extended state relative to the lower push rod 201, so that the stroller has a higher push height; when the stroller needs to be folded, the push rod is first The upper push rod 202 of the assembly 20 is retracted relative to the lower push rod 201, and then the unlocking operating member is operated to drive the rotating top block 1 to rotate, so that the unlocking push rod 4 can be driven downward to unlock the locking device, and then the push rod assembly 20 is turned over to make the front block 1 rotate. The bracket 101, the rear bracket 102 and the push rod assembly 20 are folded together, and the push rod assembly 20 is basically the same length as the front bracket 101 and the rear bracket 102 after the contraction, so that the folding size of the stroller is small, and the setting of the unlocking device is relatively simple. Easy to operate.

Of course, in strollers used in other structural forms, the lower part of the lower push rod 201 is rotatably connected to the upper part of the front bracket 101 and the two are locked by a locking device, or the lower part of the lower push rod 201 is rotatably connected to the rear bracket The upper part of 102 is locked by a locking device between the two, and the above-mentioned unlocking device can be used to unlock the locking device without affecting the retraction function of the push rod assembly 20 itself along the length direction, so that the stroller has a longer push height. , and has a smaller folded size.

Likewise, the unlocking device can also be used for unlocking locking devices in other children's products.

The above-mentioned embodiments are only intended to illustrate the technical concept and characteristics of the present invention, and the purpose thereof is to enable those who are familiar with the art to understand the content of the present invention and implement them accordingly, and cannot limit the protection scope of the present invention. All equivalent changes or modifications made according to the spirit of the present invention should be included within the protection scope of the present invention.

Claims (10)

1. a kind of tripper, for the unlock of locking device, pedestal and the work of flexible connection is arranged in the locking device For locking between the two between moving frame, the adjustable shelf includes along its length with respect to the first bar of sliding extension and the Two bars, first bar are connect with the pedestal, it is characterised in that: the tripper includes:

Push rod is unlocked, can be arranged in moving on first bar along the length direction of first bar, and towards institute The locking device can be unlocked when stating pedestal movement；

Push rod return unit is unlocked, is used to provide the described unlock push rod far from elastic force needed for pedestal movement；

Rotary jacking block, the rotary jacking block are rotationally connected on second bar around rotation axis, and the rotary jacking block, which has, to be driven Moved end has spacing between driving end and the axial line of the rotation axis；

The adjustable shelf has elongation state and contraction state, when the adjustable shelf is in elongation state, the unlock push rod It is mutually disengaged with the driving end of the rotary jacking block；When the adjustable shelf is in contraction state, the rotary jacking block The driving end connects with the unlock push rod,

The tripper further includes for the rotary jacking block can be driven to rotate when the adjustable shelf is in contraction state And the unlock actuator for making it that the unlock push rod be pushed to move towards the pedestal.

2. tripper according to claim 1, it is characterised in that: the rotary jacking block also has solution lock end, described Solution lock end and the driving end are divided into the different two sides of the rotation axis axial line, the unlock actuator and the solution lock end Connection.

3. tripper according to claim 2, it is characterised in that: the unlock actuator includes being movably arranged as institute The hauling rope stating the unlock operating parts on the second bar, being arranged in tensioning between the unlock operating parts and the solution lock end.

4. tripper according to claim 2, it is characterised in that: the tripper further includes for driving the rotation Turn jacking block rotation and makes the driving end far from the rotary jacking block return unit of elastic force needed for the unlock pushrod movement.

5. tripper according to claim 1, it is characterised in that: the adjustable shelf vertically extends, and described It is plugged in the lower slide of two bars in the rod cavity of first bar, the rotary jacking block is rotatably arranged at second bar In the rod cavity of lower end, the lower end of second bar is in the rod cavity of first bar.

6. tripper according to claim 5, it is characterised in that: the unlock push rod is sliding along length extending direction Dynamicly in the rod cavity of first bar, when the adjustable shelf is in contraction state, the top of the unlock push rod is upward It is resisted against on the driving end.

7. tripper according to any one of claims 1 to 6, it is characterised in that: the adjustable shelf and the pedestal it Spaced winding rotary shaft rotationally connects, and the locking device includes at least locking piece, and the locking piece can be along perpendicular to the rotation The axial linear movement of shaft it is arranged, when the unlock push rod is moved towards the pedestal, the unlock push rod pushes institute It states locking piece movement and converts the locking device to unlocked state by lock state.

8. tripper according to claim 7, it is characterised in that: there is pushing tow protrusion, when described on the locking piece When unlock push rod is moved towards the pedestal, the end of the unlock push rod is resisted against in the pushing tow protrusion.

9. a kind of perambulator, pedestal and adjustable shelf including flexible connection, it is characterised in that: further include as claim 1 to 8 is any Tripper described in.

10. perambulator according to claim 9, it is characterised in that: the adjustable shelf is push-rod assembly, and the pedestal includes bottom Portion is equipped with the fore-stock of front component, bottom is equipped with the after-poppet of wheel assembly, connects to the lower rotational of the push-rod assembly The top of the after-poppet or the lower part of the push-rod assembly, institute are perhaps rotationally connected on the top of the fore-stock The top on the top and the after-poppet of stating fore-stock is mutually rotatablely connected and is locked by the locking device.