CN208198549U - A kind of orienting mechanism for wheel and children trolley of children trolley - Google Patents

Abstract

The utility model relates to a wheel orientation mechanism of a children's stroller. The wheels have a free state that can be freely turned and an orientation state with a fixed direction. The children's stroller includes a connecting piece and a connecting seat. The orientation pin on the connecting seat and the orientation groove provided on the connecting piece for the orientation pin to be locked after being mated and inserted, the orientation pin has a first position for locking with the orientation groove and a second position for disengaging from the orientation groove, the wheel orientation mechanism It also includes an operating piece, a return piece, and a locking mechanism for locking the orientation pin at the first position. In the wheel orientation mechanism of the utility model, the wheel can be oriented once the cover is pressed, and the wheel can turn freely when the cover is pressed again. The orientation operation of the orientation mechanism is very convenient, the structure is simple, the design is compact and reasonable, and the practicability is strong.

Description

A wheel orientation mechanism of a stroller for a child and the stroller for a child

technical field

The utility model relates to a wheel orientation mechanism of a child's pushcart and the child's pushcart.

Background technique

With the continuous improvement of people's living standards, at present, children's strollers have become a very common children's appliance. When going out to play, putting children on the cart and being pushed by adults can not only greatly facilitate the adult's care, but also greatly reduce the need for adults. Physical exertion makes children and adults more comfortable and at the same time safer. Generally, in order to facilitate pushing, the front wheels of the stroller are generally designed to be 360-degree steerable, and the wheels can be turned freely. However, in some special cases, the 360-degree free-steering front wheels are not easy for the user to push and operate. Based on this, some children's strollers in the prior art are provided with an orienting mechanism to orient the wheels to ensure certain special cases. Next, the need for wheel orientation. However, the orientation mechanism of the children's stroller in the prior art is complicated to set and difficult to operate. For example, Chinese patent CN203876802U discloses a front wheel orientation and release structure of a trolley, including a fixed seat, a front fork and a front wheel seat, the fixed seat is docked with the front fork, and the front fork is connected with the front wheel seat; The directional jack and the horizontal return jack, the directional jack and the return jack are vertical and connected to each other, the directional pin is provided in the directional jack, and the return pin matching the directional pin is provided in the return jack , the lower end of the directional bolt is provided with a directional spring, and the tail end of the return bolt is provided with a return spring; the lower end of the directional spring is provided with a positioning iron support, and the upper end of the positioning iron support is fixed on the positioning telescopic spring, and the positioning iron support is connected to the front fork. Fork hole butt. When switching between free steering and orientation, it needs to be realized by locking and unlocking the orientation pin and the return pin. The structure is complicated, and the orientation pin and the return pin need to be operated, so the operation is not easy enough.

In addition, the wheel orientation mechanism of some carts in the prior art is a push-type orientation mechanism. Due to its structural configuration, the gland cannot float up after being pressed, so that the front wheel seat will accumulate dust, and the user experience effect is poor. .

Contents of the invention

The technical problem to be solved by the utility model is to provide a wheel orientation mechanism of a children's stroller, which has a simple and compact structure and is easy to operate.

In order to solve the above technical problems, a kind of technical scheme that the utility model adopts is:

A wheel orientation mechanism for a stroller, the wheels have a free state that can turn freely and an orientation state with a fixed direction, the stroller includes a connecting piece for installing the wheel, fixedly connected to the frame of the stroller and connected to the connecting piece The connecting seat connected by rotation, the wheel orientation mechanism is used to prevent the connecting piece from rotating with the connecting seat so that the wheel is in an oriented state. Orientation slot for locking after the alignment pin is mated and inserted. The alignment pin has a first position for locking with the alignment slot and a second position for disengaging from the alignment slot. An operating member for the downward movement of the directional pin, a return member that tends to slide the directional pin to the second position, a locking mechanism for locking the directional pin at the first position, the locking mechanism is drive-connected between the operating member and the directional pin, When the operating member is operated and driven by the locking mechanism, the directional pin can slide down to the first position. When the directional pin slides to the first position, the locking mechanism can interfere with and lock the directional pin at the first position, and the wheel is in the directional state. When the operating part is operated again, the locking mechanism is unlocked after being stressed, and the directional pin can slide upward to the second position under the force of the restoring part, the directional pin is separated from the directional groove, and the wheel is in a free state.

Preferably, the locking mechanism includes a rotor that can slide in the upward direction and can rotate around its own axis. The rotor has a locking position in the up-down direction that can interfere with and lock the orientation pin in the first position, and an unlocking position above the locking position. The locking mechanism also includes a locking part fixed on the connecting seat for locking the rotor at the locking position. When the operating member is operated, the rotor slides down and drives the orientation pin to slide down to the first position, and the rotor can rotate At the locked position, the orientation pin is locked at the first position; when the operating member is operated again, the rotor is disengaged from the clamping portion, and the rotor can slide upwards to the unlocked position, and then the orientation pin slides upwards to the second position.

Preferably, the locking mechanism further includes a push button that is transmission-connected between the operating member and the rotor, a guide sleeve sleeved on the outer periphery of the rotor and fixedly connected to the connecting seat, protrusions are formed on the rotor, and a plurality of edges along the guide sleeve are provided. The guide grooves extending in the up and down direction and capable of engaging with the protrusions respectively, the engaging parts have multiple forms and are sequentially divided into the bottom of the guide sleeve;

When the operating part is operated, the push button pushes the rotor, and when the protrusion slides down along a guide groove until it breaks away from a guide groove, the push button can force the rotor to rotate until the protrusion collides with the clamping part, and the orientation pin is locked in the first position. position; when the operating part is operated again, the push button pushes the rotor to slide down until the projection is disengaged from the locking part, the push button can force the rotor to rotate, and when the projection moves to another adjacent guide groove, The rotor can slide upwards to the unlocking position, the orientation pin slides upwards to the second position under the force of the return member, and the locking mechanism is unlocked.

Preferably, the lower end surface of the push button that is in contact with the rotor is serrated, and the contact surface of the rotor that is in contact with the push button is in a sawtooth shape. When the rotor slides down until the protrusion disengages from the guide groove, the saw-toothed slope on the lower end of the push button slides relative to the saw-toothed slope on the rotor's contact surface, and then the rotor rotates to the locking part.

Preferably, a plurality of protrusions are sequentially distributed along the circumferential direction of the rotor, and the plurality of protrusions can be engaged with the plurality of guide grooves correspondingly.

Preferably, the wheel orientation mechanism further includes a first elastic member that interferes between the rotor and the orientation pin along the vertical direction, and the orientation pin and the rotor are in contact with each other through the first elastic member.

Preferably, the operating part is a sliding cover arranged on the connecting seat, the upper surface of the operating part is for people to press, and the lower surface of the operating part is in conflict with the push button. When the operating part is pressed, the operating part drives the push button to move downward .

Preferably, the wheel alignment mechanism further includes a second elastic member that interferes between the operating member and the connecting seat. When the operating member is pressed, the operating member slides downward. force, moves upward and returns to its original position.

Preferably, an upside down extension is formed on the lower surface of the operating part, and a limiting groove cooperating with the upside down is opened in the connecting seat. When the limiting surfaces on the bit slots are in contact, the operating part returns to its initial position.

The utility model also relates to a children's stroller, which includes a connecting piece for installing wheels, a connecting seat fixedly connected to the frame of the stroller and rotatably connected with the connecting piece, and the children's stroller also includes the connecting piece of the utility model. Described wheel alignment mechanism.

Due to the application of the above-mentioned technical solutions, the utility model has the following advantages compared with the prior art:

The wheel orientation mechanism of the children's stroller of the utility model can easily lock the orientation pin in the first position through the locking mechanism, and the matching and coordination between the locking mechanism and other parts of the wheel orientation mechanism make the wheel of the utility model Orientation mechanism, once the cover is pressed, the wheels can be oriented, and the wheels can be turned freely when the cover is pressed again. The orientation operation of the orientation mechanism is very convenient, the structure is simple, the design is compact and reasonable, and the practicability is strong; in addition, through the wheel orientation mechanism The setting of the second elastic member in the utility model makes the gland of the utility model float up quickly under the force of the second elastic member after being pressed and floated down, so as to prevent the position of the gland from sinking relative to the connecting seat after floating downwards, resulting in an empty space. Dust accumulation behind the pit.

Description of drawings

Fig. 1 is a schematic cross-sectional structure diagram of the wheel orientation mechanism of the present invention (the connecting piece and the connecting seat are exploded);

Figure 2 is a schematic diagram of the cooperation structure of the locking mechanism and the directional pin of the present invention (not including the guide sleeve);

Fig. 3 is a schematic cross-sectional structure diagram of the wheel orientation mechanism of the present invention (not including the rotor and the push button);

Among them: 1. Connecting seat; 11. Orientation pin; 12. Rotor; 120. Protrusion; 13. Push button; 14. First elastic part; 15. Replying part; 16. Operating part; Position groove; 17. Secondary component; 2. Connecting piece; 20. Orientation groove; 31. Guide groove; 32. Clamping part.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail.

As shown in Fig. 1, Fig. 2 and Fig. 3, the utility model relates to a wheel orientation mechanism of a child's stroller and the child's stroller. The connecting seat 1 on the vehicle frame and connected with the connecting piece 2 in rotation, the wheel has a free state that can be turned freely and an orientation state with a fixed direction, and the wheel orientation mechanism is used to prevent the connecting piece 2 from rotating with the connecting seat 1 so that the wheel is in In the orientation state, the wheel orientation mechanism includes an orientation pin 11 that slides in the up and down direction on the connecting seat 1, an orientation groove 20 that is provided on the connecting piece 2 for locking after the orientation pin 11 is mated and inserted, and is movably arranged on the connecting seat. 1, the operating member 16 used to control the downward movement of the directional pin 11, the return member 15 that tends to slide the directional pin 11 to the second position, and the locking mechanism used to lock the directional pin 11 at the first position, the orientation The pin 11 has a first position locked with the orientation groove 20 and a second position disengaged from the orientation groove 20. The locking mechanism is connected between the operation member 16 and the orientation pin 11. When the operation member 16 is operated, it will be driven by the locking mechanism. , the directional pin 11 can slide down to the first position, when the directional pin 11 slides to the first position, the locking mechanism can interfere with the directional pin 11 and lock it in the first position, and the wheel is in the directional state; when the operating member 16 is operated again , the locking mechanism is unlocked after being stressed, the directional pin 11 can slide upward to the second position under the force of the return member 15, the directional pin 11 is disengaged from the directional groove 20, and the wheel is in a free state.

Specifically, the locking mechanism includes a rotor 12 that can slide upward and can rotate around its own axis, a push button 13 that is transmission-connected between the operating member 16 and the rotor 12, sleeved on the outer periphery of the rotor 12 and fixedly connected to the connection. The guide sleeve on the seat 1, the rotor 12 has a locking position in the up and down direction that can interfere with the orientation pin 11 and lock it in the first position, and an unlocking position above the locking position. In addition, a protrusion 120 (in this example) is formed on the rotor 12 The middle protrusions 120 are distributed in sequence along the circumferential direction of the rotor 12), and the guide sleeve is provided with a plurality of guide grooves 31 extending in the up and down direction and capable of engaging with the protrusions 120 respectively. The guide groove 31 can be snapped correspondingly, and the bottom of the guide sleeve is formed with a plurality of snapping parts 32 distributed sequentially along the circumferential direction, and the snapping parts 32 are used for snapping the rotor 12 at the locking position; moreover, the push button 13 and the rotor 12. The lower end surface of the contact surface of the rotor 12 is serrated, and the contact surface of the rotor 12 and the push button 13 is in a serrated shape. In contrast, when the rotor 12 slides down until the projection 120 disengages from the guide groove 31 , the sawtooth slope on the lower end of the push button 13 slides relative to the sawtooth slope on the contact surface of the rotor 12 , and then the rotor 12 rotates to the clamping portion 32 .

Further, the wheel alignment mechanism also includes a first elastic member 14 that interferes between the rotor 12 and the orientation pin 11 along the vertical direction, and the orientation pin 11 and the rotor 12 are in contact with each other through the first elastic member 14 . (The orientation groove 20 on the connector 2 is provided with one or more than one, when the orientation pin 11 moves downward, it may not be able to be directly inserted into the orientation groove 20, it may be in the same position as the notch of the orientation groove 20 If the planes are against each other, then the operation piece 16 (gland) cannot be pressed down. It is necessary to align the orientation pin 11 with the orientation groove 20 by feeling before pressing the operation piece 16 to allow the orientation mechanism to orient, that is, the operation piece 16 is not in the Any situation can be pressed, and only when the orientation pin 11 is aligned with the orientation groove 20, can it be pressed; however, through the setting of the first elastic member 14, the above-mentioned problems can be avoided, even if the orientation pin 11 is not aligned with the orientation groove 20 , the operating member 16 can also be normally pressed down (the first elastic member 14 is compressed) so that the rotor 12 of the locking mechanism can move to the locked position, so that the wheel (or the rotating connecting member 2) can be rotated again and when the orientation pin 11 and the orientation groove 20 When aligning, the orientation pin 11 will be automatically inserted into the orientation groove 20 under the force of the elastic member.

In this example, the operating part 16 is a sliding gland located on the connecting seat 1, the upper surface of the operating part 16 is for people to press, the lower surface of the operating part 16 is in conflict with the push button 13, and the operating part 16 is connected to the connecting seat 1. There is also a second elastic piece 17 between them. In addition, an upside down 161 extending downward is formed on the lower surface of the operating piece 16, and a limit groove 162 is provided in the connecting seat 1 to cooperate with the upside down 161. When the operating piece 16 is pressed , the operating piece 16 drives the push button 13 to move downward. When the pressing force on the operating piece 16 is released, the operating piece 16 moves upward under the force of the second elastic piece 17, and the hook portion of the upside down 161 and the limit groove 162 When the limit surface on the top touches, the operating member 16 returns to its initial position.

Situation when the wheel orientation mechanism of the children's stroller of the present utility model is in use is as follows:

The wheel changes from the free state to the directional state, press the operating part 16, the operating part 16 presses the push button 13, the push button 13 will press and push the rotor 12 to slide down, and the orientation pin 11 is pressed down by the rotor 12 Sliding; specifically: when the rotor 12 slides downward, the protrusion 120 on it slides downward along one of the guide grooves 31, and when the protrusion 120 slides in the up and down direction, it is aligned with the guide groove When 31 disengages, the apex of the sawtooth on the lower end of the push button 13 and the apex of the sawtooth on the contact surface of the rotor 12 are in contact with each other, and then the inclined surface of the sawtooth on the lower end of the push button 13 and the inclined surface of the sawtooth on the contact surface of the rotor 12 slide relative to each other, and then push the button 13 can force the rotor 12 to rotate until the protrusion 120 is in contact with the locking part 32, so that the rotor 12 rotates to the locking position. At this time, the orientation pin 11 can be locked in the orientation groove 20, that is, the wheel is in the orientation state.

The wheel is converted from the directional state to the free state, and the operating member 16 is pressed again, and the rotor 12 will move down a small distance until it is disengaged from the locking part 32. At this time, the push button 13 can force the rotor 12 again. Rotate, when the protrusion 120 on which the rotor 12 rotates moves into another adjacent guide groove 31, the rotor 12 can return to the unlocked position, and the orientation pin 11 slides upwards under the force of the return member 15 to In the second position, the locking mechanism is unlocked.

In summary, the wheel orientation mechanism of the children's stroller of the utility model can easily lock the orientation pin in the first position through the locking mechanism, and the coordination between the locking mechanism and other components of the wheel orientation mechanism makes In the wheel orientation mechanism of the utility model, once the cover is pressed, the wheel can be oriented, and once the cover is pressed again, the wheel can turn freely. The orientation operation of the orientation mechanism is very convenient, the structure is simple, the design is compact and reasonable, and the practicability is strong; in addition , through the setting of the second elastic member in the wheel orientation mechanism, after the gland of the utility model is pressed and floated down, it can quickly float up under the force of the second elastic member, so as to avoid the position of the gland being relatively connected after floating downward. The sinking of the seat causes dust accumulation after the empty pit is formed.

The utility model has been described in detail above, and its purpose is to allow those familiar with the technology in this field to understand the content of the utility model and implement it, and can not limit the protection scope of the utility model, and the utility model is not limited to the above-mentioned All equivalent changes or modifications made according to the spirit of the present utility model shall fall within the protection scope of the present utility model.

Claims (10)

1. A wheel orientation mechanism of a children's stroller, the wheels have a free state that can turn freely and an orientation state of a fixed direction, and the children's stroller includes a connecting piece for installing wheels, a car that is fixedly connected to the stroller A connecting seat mounted on the frame and rotatably connected with the connecting piece, the wheel orientation mechanism is used to prevent the connecting piece from rotating with the connecting seat so that the wheels are in an oriented state, and the wheel orientation mechanism includes sliding in the up and down direction The directional pin provided on the connecting seat, the directional slot provided on the connecting piece for the directional pin to be locked after mating insertion, the directional pin has a first position to be locked with the directional slot and a second position disengaged from said orientation slot, characterized by: The wheel alignment mechanism also includes an operating element movably arranged on the connecting seat for controlling the downward movement of the alignment pin, a return element tending to slide the alignment pin to the second position, and an operating element for moving the alignment pin to the second position. The directional pin is locked in the locking mechanism at the first position, and the locking mechanism is connected between the operating member and the directional pin by transmission. When the operating member is operated and driven by the locking mechanism, the The directional pin can slide down to the first position. When the directional pin slides to the first position, the locking mechanism can interfere with the directional pin and lock it in the first position, and the wheel is in the directional state; Operate the operating member again, the locking mechanism is unlocked after being stressed, the directional pin can slide upward to the second position under the force of the restoring member, the directional pin is disengaged from the directional groove, and the The wheels are free. 2. The wheel orientation mechanism of a children's stroller according to claim 1, wherein the locking mechanism includes a rotor that can slide in the upward direction and can rotate around its own axis, and the rotor can rotate in the up and down direction. The orientation pin is opposed and locked at the first locked position and the unlocked position above the locked position, and the locking mechanism also includes a locking mechanism fixed on the connecting seat for clamping the rotor on the When operating the operating member, the rotor slides down and drives the orientation pin to slide down to the first position, and the rotor can rotate to the locking position. The directional pin is locked at the first position; when the operating member is operated again, the rotor is disengaged from the locking part, the rotor can slide upward to the unlocked position, and then the directional pin slides upward to the second position. Location. 3. The wheel orientation mechanism of a children's stroller according to claim 2, wherein the locking mechanism further comprises a push button that is drive-connected between the operating member and the rotor, sleeved on the rotor The outer periphery is fixedly connected to the guide sleeve on the connecting seat, the rotor is formed with protrusions, and the guide sleeve is provided with a plurality of guide grooves extending in the up and down direction and capable of engaging with the protrusions respectively, The clamping portion has multiple forms and is sequentially divided into the bottom of the guide sleeve; When the operating member is operated, the push button pushes the rotor, and when the protrusion slides down along one of the guide grooves to disengage from the one guide groove, the push button can force the rotor to rotate to the The protrusion is in contact with the engaging part, and the orientation pin is locked at the first position; when the operating member is operated again, the push button pushes the rotor to slide down until the protrusion and the When the locking part is disengaged from the locking, the push button can force the rotor to rotate, and when the protrusion moves into another adjacent guide groove, the rotor can slide upward to the unlocked position, and the directional pin The locking mechanism is unlocked by sliding upward to the second position under the action force of the restoring member. 4. The wheel orientation mechanism of the stroller according to claim 3, characterized in that: the lower end surface of the push button that conflicts with the rotor is serrated, and the bottom surface of the rotor that conflicts with the push button The contact surface is serrated. When the operating member is operated, the tip of the sawtooth on the lower end of the push button will be against the tip of the sawtooth on the contact surface of the rotor. When the rotor slides down to the point where the protrusion and the The guide groove is disengaged, and the sawtooth slope on the lower end surface of the push button slides relative to the sawtooth slope on the contact surface of the rotor, and then the rotor rotates to the clamping part. 5. The wheel orientation mechanism of a children's stroller according to claim 3, wherein a plurality of said protrusions are sequentially distributed along the circumferential direction of said rotor, and a plurality of said protrusions are connected with a plurality of said guides. The slots can be snapped in correspondingly. 6. The wheel orientation mechanism of a children's stroller according to claim 2, characterized in that: the wheel orientation mechanism further comprises a first elastic member that interferes between the rotor and the orientation pin along the up and down direction, so that The orientation pin is in conflicting connection with the rotor through the first elastic member. 7. The wheel orientation mechanism of a children's stroller according to claim 3, characterized in that: the operating member is a sliding cover arranged on the connecting seat, the upper surface of the operating member is for people to press, The lower surface of the operating member is in conflicting connection with the push button, and when the operating member is pressed, the operating member drives the push button to move downward. 8. The wheel orientation mechanism of a children's stroller according to claim 5, characterized in that: the wheel orientation mechanism further comprises a second elastic member that interferes between the operating member and the connecting seat. The operating member slides downward, and when the pressing force on the operating member is released, the operating member acts on the second elastic member to move upward and return to its original position. 9. The wheel orientation mechanism of a children's stroller according to claim 5, characterized in that: the lower surface of the operating member is formed with an upside down extending downwards, and the connecting seat is provided with a hole that cooperates with the upside down. The limiting groove, when the second elastic member pushes the operating member to move upward, and when the upside-down hook portion abuts against the limiting surface on the limiting groove, the operating member returns to its initial position. 10. A stroller for children, comprising a connecting piece for installing wheels, a connecting seat fixedly connected to the frame of the stroller and rotatably connected with the connecting piece, characterized in that: the child The stroller also includes a wheel orientation mechanism as recited in any one of claims 1-9.