CN217100139U - Buffering and shock-proof wheel seat - Google Patents

Abstract

The utility model discloses a can cushion wheel seat of moving away to avoid possible earthquakes, include: the first seat body is fixed at the bottom of the frame of the baby carriage, and an accommodating chamber with an open bottom is arranged in the first seat body; the second seat body is provided with a top part and a bottom part which are opposite, wherein the top part extends into the accommodating chamber and is installed in a swinging mode, the bottom part is positioned outside the accommodating chamber and is used for installing wheels, and the second seat body is provided with an arc-shaped hole which extends around a swinging axis; the buffer component acts between the first seat body and the second seat body and restrains the swing of the second seat body; and the limiting rod is fixed in the accommodating chamber and penetrates into the arc-shaped hole to limit the swing limit position of the second seat body. The utility model provides a wheel seat simple structure is applied to and can plays fine effect of moving away to avoid possible earthquakes in the bassinet.

Description

Buffering and shock-proof wheel seat

Technical Field

The utility model relates to a bassinet technical field especially relates to a can cushion wheel seat of moving away to avoid possible earthquakes.

Background

A stroller is a type of vehicle for riding or playing and generally comprises a frame and wheels, wherein the wheels are mounted to the bottom of the frame by wheel mounts. The existing baby carriage basically has no shock absorbing function or weak shock absorbing function, and the ground shock can be directly transmitted to the frame, so that the use comfort is poor.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a but wheel seat of buffering to avoid possible earthquakes is applied to the bassinet, can effectively promote and use the comfort.

The utility model discloses in, can cushion the wheel seat of moving away to avoid possible earthquakes includes:

the first seat body is fixed at the bottom of the frame of the baby carriage, and an accommodating chamber with an open bottom is arranged in the first seat body;

the second seat body is provided with a top part and a bottom part which are opposite, wherein the top part extends into the accommodating chamber and is installed in a swinging mode, the bottom part is positioned outside the accommodating chamber and is used for installing wheels, and the second seat body is provided with an arc-shaped hole which extends around a swinging axis;

the buffer component acts between the first seat body and the second seat body and restrains the swing of the second seat body;

and the limiting rod is fixed in the accommodating chamber and penetrates into the arc-shaped hole to limit the swing limit position of the second seat body.

Several alternatives are provided below, but not as an additional limitation to the above general solution, but merely as a further addition or preference, each alternative being combinable individually for the above general solution or among several alternatives without technical or logical contradictions.

Optionally, at least one side chamber wall of the accommodating chamber in the swing direction of the second base is open.

Optionally, a transition step is arranged at a joint of the top and the bottom of the second seat body, and a bottom edge of the chamber wall of the accommodating chamber is attached to the adjacent transition step;

the bottom of the second seat body is provided with a wheel axle hole for mounting a wheel, and the axis direction of the wheel axle hole is parallel to the swing axis of the second seat body.

Optionally, the arcuate aperture is below the axis of oscillation.

Optionally, quick release structures matched with each other are arranged between the bottom of the second seat body and the wheel axle of the wheel.

Optionally, the buffer assembly includes:

one end of the pull rod is connected with the top of the second seat body, and the other end of the pull rod extends to the accommodating chamber;

the pressing cap is connected to one end, extending out of the accommodating chamber, of the pull rod;

and the buffer spring is sleeved on the pull rod, one end of the buffer spring is abutted against the outer side of the chamber wall of the accommodating chamber, and the other end of the buffer spring is abutted against the pressing cap.

Optionally, one end of the pull rod is installed between the second seat body in a swinging manner, and an avoidance window corresponding to the position where the pull rod penetrates out is formed in the chamber wall of the accommodating chamber;

the avoiding window is strip-shaped and corresponds to the swing amplitude of the pull rod.

Optionally, an edge of the avoiding window is provided with a convex positioning part, and one end of the buffer spring is sleeved on the positioning part;

the pressing cap is adjustable relative to the pull rod to change the pretightening force of the buffer spring.

Optionally, the positioning element is a pair of protruding columns respectively located on two opposite side edges of the avoiding window.

Optionally, a fixing head is arranged at one end of the pull rod extending out of the accommodating chamber, the pressing cap is movably sleeved on the pull rod in a penetrating manner, a guiding inclined plane which is matched with the fixing head is arranged between the fixing head and the pressing cap, and when the pressing cap is pulled relative to the pull rod, the relative position of the pressing cap and the pull rod is changed under the action of the guiding inclined plane;

the pressing cap is cup-shaped and covers the fixing head, and the guide inclined plane is arranged between the outer wall of the fixing head and the inner wall of the pressing cap.

Compared with the prior art, the wheel seat provided by the utility model achieves the effect of buffering and shock absorption by arranging the buffer component between the first seat body and the second seat body; the wheel seat is applied between the wheels and the frame, can effectively eliminate the vibration transmitted from the ground, and improves the use stability of the baby carrier.

Drawings

FIG. 1 is a schematic view of a stroller according to an embodiment;

FIG. 2 is a schematic view of a portion of the stroller;

FIG. 3 is a schematic view of a wheel seat structure capable of buffering and absorbing shock;

fig. 4 is a schematic structural view of the first seat;

FIG. 5 is a schematic structural view of the second base;

FIG. 6 is a schematic view of the structure of the pressing cap and the fixing head;

FIG. 7 is an exploded view of the brake configuration;

FIG. 8 is a partial schematic view of FIG. 7;

FIG. 9 is a partial cross-sectional view of the brake structure.

The reference numerals in the figures are illustrated as follows:

100. a frame; 110. a foot bar; 111. a front foot bar; 112. a rear foot bar; 120. a handle bar; 130. a joint site; 150. a cross bar; 151. a brake pin; 152. a transmission rod; 1521. mounting grooves; 1522. a guide hole; 1523. a first avoidance line hole; 1524. a second avoidance line hole; 153. a potential accumulating elastic member; 154. an end cap; 1541. an annular step; 155. a first fastener; 156. a first guide member; 157. a second guide member; 158. a return spring; 159. a guide hole; 160. a transmission sleeve; 161. a guide groove; 162. a drive section; 163. a clamping section; 170. a brake pedal; 171. a barrel; 172. a pedal; 191. an operating handle;

400. a wheel seat; 410. a coupling sleeve; 411. a second fastener; 420. a first seat body; 421. a housing chamber; 422. avoiding the window; 423. a positioning member; 430. a second seat body; 431. a top portion; 432. a bottom; 4321. a wheel axle hole; 433. a transition step; 434. an arc-shaped hole; 440. a buffer assembly; 441. a pull rod; 442. a fixed head; 4421. a chute; 4422. a guide slope; 4423. an end face; 443. pressing the cap; 4431. a guide slope; 4432. positioning ribs; 4433. a bottom wall; 4434. an axial end face; 444. a buffer spring; 450. a limiting rod;

500. a wheel; 510. a front wheel; 520. a rear wheel; 521. a brake clamping groove;

600. a seat;

700. an adapter.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1, a stroller according to an embodiment of the present invention includes a frame 100 and wheels 500, the frame 100 includes two leg rods 110 and a handle rod 120 connected in an intersection, the intersection of the two leg rods is a joint portion 130, one of the two leg rods is a front leg rod 111, and the other is a rear leg rod 112; the wheel 500 includes a front wheel 510 and a rear wheel 520 respectively mounted on the front leg 111 and the rear leg 112, wherein the front wheel 510 is a universal wheel, and the rear wheel 520 is a directional wheel. The removable seat 600 may be connected to the frame 100 through an adapter 700.

Referring to fig. 2 to 6, an embodiment of the present invention provides a wheel seat 400 capable of buffering and absorbing shock for connecting a frame 100 and a wheel 500, wherein the wheel seat 400 includes a first seat body 420, a second seat body 430, a buffering assembly 440 and a limiting rod 450, wherein the first seat body 420 is fixed at a bottom 432 of the frame 100 of a stroller, and a containing chamber 421 with an open bottom 432 is provided therein; the second seat 430 has a top 431 and a bottom 432 opposite to each other, wherein the top 431 extends into the accommodating chamber 421 and is installed in a swinging manner, and the bottom 432 is located outside the accommodating chamber 421 and is used for installing the wheel 500; the buffering assembly 440 acts between the first seat 420 and the second seat 430 to suppress the swing of the second seat 430; the second base 430 has an arc hole 434 extending around the swing axis, and the limiting rod 450 is fixed in the accommodating chamber 421 and penetrates through the arc hole 434 to limit the swing limit position of the second base 430.

At least one side chamber wall of the receiving chamber 421 of the first seat 420 in the swinging direction of the second seat 430 is open, so that the second seat 430 can be mounted on the first seat 420, see fig. 4.

In the specific structure of the second seat, corresponding to the installation of the wheel, the bottom 432 of the second seat is further provided with a wheel axle hole 4321 for installing the wheel 500, and the axis direction of the wheel axle hole 4321 is parallel to the swing axis of the second seat 430. The second seat body is also provided with a sealing cover for sealing the axle hole 4321.

The wheel 500 is connected with the second seat 430 through a rotating shaft, and a quick-release structure can be arranged between the wheel shaft hole 4321 and the internal rotating shaft, and comprises a locking piece matched with the rotating shaft, wherein the locking piece is of a sheet structure; at least a portion of the locking element extends out of the second housing and serves as a lever 191, which lever 191 is visible in FIG. 5.

In order to limit the swing limit position of the second seat 430, an arc-shaped hole 434 is provided below the swing axis.

Referring to fig. 5, in an embodiment, a transition step 433 is disposed at a joint portion of the top portion 431 and the bottom portion 432 of the second seat 430, and a bottom edge of a chamber wall of the accommodating chamber 421 is adjacent to and attached to the transition step 433, so that smooth transition can be achieved, and the assembly regularity of the two seat bodies can be ensured.

The buffering assembly 440 includes a rod 441, a pressing cap 443, and a buffering spring 444, wherein one end of the rod 441 extends into the second seat 430 and is connected to the second seat 430 in a swinging manner, and the other end of the rod extends into the accommodating chamber 421; a press cap 443 is attached to the end of the drawbar 441 extending out of the receiving chamber 421; the buffer spring 444 is sleeved on the pull rod 441, one end of the buffer spring 444 is abutted against the outer side of the chamber wall of the accommodating chamber 421, and the other end of the buffer spring 444 is abutted against the pressing cap 443.

Specifically, one end of the pull rod 441 is installed to swing with the second seat 430, and an escape window 422 corresponding to a position where the pull rod 441 penetrates is formed in a chamber wall of the accommodating chamber 421. The avoiding window 422 is strip-shaped and corresponds to the swing amplitude of the pull rod 441.

In order to fix the position of the buffer spring, the edge of the avoiding window 422 is provided with a convex positioning piece 423, and one end of the buffer spring 444 is sleeved on the positioning piece 423. Specifically, referring to fig. 3, the positioning element 423 is a pair of protruding pillars respectively disposed on two opposite sides of the avoiding window 422.

The compression cap 443 and the position relative to the tension rod 441 are generally required to be adjustable to vary the preload of the damping spring 444. There are many ways to realize the adjustment, for example, in an embodiment, a fixed head 442 is disposed at one end of the pull rod 441 extending out of the receiving chamber 421, a pressing cap 443 is movably sleeved on the pull rod 441, a guiding inclined surface 4422 and a guiding inclined surface 4431 are disposed between the fixed head 442 and the pressing cap 443, which cooperate with each other, and when the pressing cap 443 is pulled relative to the pull rod 441, the relative position of the pull rod 441 is changed by the action of the guiding inclined surface 4431.

Referring to fig. 6, the pressing cap 443 is cup-shaped and covers the fixed head 442, and the guide slope 4431 is disposed between the outer wall of the fixed head 442 and the inner wall of the pressing cap 443.

In one embodiment, the outer wall of the fixing head 442 has a sliding groove extending along the circumferential direction, and the inner wall of the pressing cap 443 has a positioning rib 4432 located in the sliding groove, and the sliding groove limits the rotation range of the pressing cap through the positioning rib 4432.

The guide ramp 4431 is provided by a castellated structure, both of which the press cap 443 is similar to the castellated structure of the retaining head 442, the outer edge of which comprises the guide ramp 4431 and the axial end surface 4434.

When the end surface 4423 of the fixed head 442 abuts against the bottom wall 4433 of the pressing cap 443, the pressing cap 443 is closer to the fixed head 442, and the buffer spring is stretched, i.e., the pre-tightening force is smaller.

After the pressing cap 443 rotates relative to the fixed head 442, the pressing cap 443 and the fixed head 442 are guided to each other by the inclined surfaces until the end surface 4423 of the fixed head 442 abuts against the end surface 4423 of the tooth-shaped structure of the pressing cap 443, and at this time, the pressing cap 443 is far away from the fixed head 442, and the buffer spring is compressed, i.e., the pretightening force is large. The buffer assembly can achieve the effect of buffering and shock absorption; the wheel seat is applied between the wheels and the frame, can effectively eliminate the vibration transmitted from the ground, and improves the use stability of the baby carrier.

The wheel seat provided by the utility model achieves the effect of buffering and shock absorption by arranging the buffer component between the first seat body and the second seat body; the wheel seat is applied between the wheels and the frame, can effectively eliminate the vibration transmitted from the ground, and improves the use stability of the baby carrier.

The bassinet need brake through the brake structure at the stopping of process of marcing, but the brake structure of present majority is comparatively complicated, and brake effect is relatively poor. With reference to fig. 2 and 7 to 8, an embodiment of the present invention provides a braking structure for a stroller, including a frame 100 and a wheel 500, wherein the wheel 500 is mounted at the bottom of the frame 100 through a wheel seat 400, and the wheel 500 is a rear wheel 520 of the stroller in this embodiment; the wheel 500 is annularly provided with a plurality of brake clamping grooves 521 at one side facing the frame 100, the frame 100 is fixed with a cross rod 150 extending along the width direction of the frame 100, the cross rod 150 is a hollow rod and is internally provided with a brake pin 151 matched with the brake clamping grooves 521, the cross rod 150 is rotated with a transmission sleeve 160, and the periphery of the transmission sleeve 160 is fixedly sleeved with a brake pedal 170. The brake pedal 170 is used as a force-bearing point of an external force to control the rotation of the driving sleeve 160, and the rotating driving sleeve 160 and the cross bar 150 rotate with each other, so that the brake pin 151 is matched with the brake slot 521.

The driving rod 152 is arranged in the cross bar 150, one end of the driving rod 152 is in abutting linkage with the driving sleeve 160, the end surface of the other end is provided with an installation groove 1521, one end of the brake pin 151 is slidably inserted into the installation groove 1521, and an accumulating elastic part 153 is abutted between the end surface of the brake pin and the bottom of the installation groove 1521. When the position of the brake pin 151 is not aligned with the position of the brake clamping groove 521, the elastic potential energy stored by the potential accumulating elastic part 153 can slow down the movement of the brake pin 151 towards the brake clamping groove 521, and the brake pin 151 can be accurately clamped into the brake clamping groove. The potential accumulating elastic member 153 in the present embodiment may be a coil spring or the like.

The side wall of the mounting groove 1521 is provided with a guide hole 1522 extending along the sliding direction of the brake pin 151, the brake pin 151 is fixed with a first guide member 156 extending into the guide hole 1522, and the deformation amount of the potential accumulating elastic member 153 is limited by the limit formation of the first guide member 156 in the wire guide hole.

In one embodiment, a strip-shaped guide hole 159 is formed in a side wall of the crossbar 150, a second guide 157 is fixed to one end of the transmission rod 152, which is away from the wheel 500, the second guide 157 extends to the outside of the crossbar 150 through the guide hole 159, and the extending position is a linkage end; the axial end face of the transmission sleeve 160 is provided with a guide groove 161, the linkage end is placed in the guide groove 161, and the transmission sleeve 160 abuts against the driven second guide member 157 through the groove wall of the guide groove 161 in the rotating process and drives the transmission rod 152.

The second guide 157 is a guide post, and the outer circumferential wall of the cylinder is engaged with the wall of the guide groove 161. The wall of the guide groove 161 has a driving section 162 for pushing the second guide member 157 to one side of the wheel 500, and the end of the driving section 162 has a bent engaging section 163, and the engaging section 163 is used for holding the transmission rod 152 in a state that the wheel 500 approaches to achieve braking.

For facilitating the braking, in one embodiment, two transmission rods 152 are disposed along the length direction of the cross bar 150 and in the middle region of the transmission sleeve 160 and the brake pedal 170, and are respectively disposed at two axial sides of the transmission sleeve 160; the two transmission rods are simultaneously controlled through the transmission sleeve 160, so that the wheels on the two sides of the frame can be simultaneously braked.

Referring to fig. 7, two end caps 154 are sleeved on the cross bar 150, and along the length direction of the cross bar 150, the two end caps 154 are respectively arranged at two sides of the transmission sleeve 160 to clamp and fix the transmission sleeve 160; each end cap 154 is secured to the cross-bar 150 by a first fastener 155 that extends radially through the cross-bar 150; in order to avoid the interference between the installation and the movement of each component, the transmission rod 152 is provided with a first avoidance bar hole 1523 extending along the length direction of the cross bar 150, and the first fastening member 155 penetrates through the first avoidance bar hole 1523 inside the cross bar 150.

Regarding the fixation between the end caps 154 and the transmission sleeve 160, in an embodiment, the opposite sides of the two end caps 154 are provided with annular steps 1541, and the two axial end surfaces of the rotating sleeve are abutted against the annular steps 1541 on the corresponding sides; after abutting, the two end caps 154 can effectively clamp the transmission sleeve 160, and promote the linkage of the transmission sleeve 160 and the cross bar 150.

In one embodiment, a coupling sleeve 410 is fixed on the wheel seat 400, one end of the cross bar 150 adjacent to the wheel 500 is inserted into the coupling sleeve 410, and the coupling sleeve 410 is fixed with the cross bar 150 through a second fastening member 411 radially penetrating through the cross bar 150; in order to avoid the second fastening piece 411, a second avoidance line hole 1524 extending along the length of the crossbar 150 is formed in the transmission rod 152, and the second fastening piece 411 passes through the second avoidance line hole 1524 inside the crossbar 150.

The first fastener and the second fastener in the above embodiments may be bolts, screws, rivets, pins, or the like.

To avoid interference, the first and second bypass bar holes 1523 and 1524 are perpendicular to each other in the direction of penetration.

To effect the return of the transmission rod and the brake pedal when the brake is released, in one embodiment, the transmission rod 152 extends into one end of the coupling sleeve 410 and presses against the wheel seat 400 with the return spring 158.

To facilitate braking by external force, in one embodiment, the brake pedal 170 includes a cylinder 171 disposed at the outer periphery of the driving sleeve 160, and a pedal 172 fixed to the outer wall of the cylinder 171; the inner wall of the cylinder 171 and the outer wall of the driving sleeve 160 are provided with a mutually matched tooth socket structure to keep rotating synchronously with each other.

The utility model provides a brake structure adopts the transfer line of integral type, has reduced the component, and overall structure is simpler, and can drive the rotation of transmission cover through brake pedal, and then the linkage transfer line reaches the purpose of brake. In addition, still set up on the transfer line and hold a trend elastic component, can guarantee the stability and the accuracy of brake, avoid the brake dynamics too big, lead to the damage of brake structure.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features. When technical features in different embodiments are represented in the same drawing, it can be seen that the drawing also discloses a combination of the embodiments concerned.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. But cushion wheel seat of moving away to avoid possible earthquakes, its characterized in that includes:

the first seat body is fixed at the bottom of the frame of the baby carrier, and an accommodating chamber with an open bottom is arranged in the first seat body;

the second seat body is provided with a top part and a bottom part which are opposite, wherein the top part extends into the accommodating chamber and is installed in a swinging mode, the bottom part is positioned outside the accommodating chamber and is used for installing wheels, and the second seat body is provided with an arc-shaped hole which extends around a swinging axis;

the buffer component acts between the first seat body and the second seat body and restrains the swing of the second seat body;

and the limiting rod is fixed in the accommodating chamber and penetrates into the arc-shaped hole to limit the swing limit position of the second seat body.

2. The wheel seat with shock absorbing function as claimed in claim 1, wherein at least one side wall of the accommodating chamber in the swinging direction of the second seat body is open.

3. The wheel seat with buffering and shock absorbing functions as claimed in claim 1, wherein a transition step is formed at the joint of the top and the bottom of the second seat body, and the bottom edge of the chamber wall of the accommodating chamber is closely attached to the transition step;

the bottom of the second seat body is provided with a wheel axle hole for mounting a wheel, and the axis direction of the wheel axle hole is parallel to the swing axis of the second seat body.

4. The cushioned shock wheel base of claim 3, wherein said arcuate aperture is located below said pivot axis.

5. The wheel seat with buffering and shock absorbing functions as claimed in claim 4, wherein the bottom of the second seat body and the axle of the wheel are provided with mutually matched quick release structures.

6. The cushioned shock wheel base of claim 4, wherein said cushion assembly comprises:

one end of the pull rod is connected with the top of the second seat body, and the other end of the pull rod extends to the accommodating chamber;

the pressing cap is connected to one end, extending out of the accommodating chamber, of the pull rod;

and the buffer spring is sleeved on the pull rod, one end of the buffer spring is abutted against the outer side of the chamber wall of the accommodating chamber, and the other end of the buffer spring is abutted against the pressing cap.

7. The wheel seat capable of buffering and avoiding shock according to claim 6, wherein one end of the pull rod is installed between the second seat body in a swinging manner, and an avoidance window corresponding to the position where the pull rod penetrates out is formed in the chamber wall of the accommodating chamber;

the avoiding window is strip-shaped and corresponds to the swing amplitude of the pull rod.

8. The wheel seat with buffering and shock absorbing functions as claimed in claim 7, wherein the edge of the avoiding window is provided with a positioning member protruding outward, and one end of the buffering spring is sleeved on the positioning member;

the position of the pressure cap relative to the pull rod is adjustable so as to change the pretightening force of the buffer spring.

9. The cushion and shock absorbing wheel seat as set forth in claim 8, wherein said positioning members are a pair of posts respectively disposed on opposite sides of said escape window.

10. The wheel seat with buffering and shock absorbing functions as claimed in claim 8, wherein a fixing head is disposed at one end of the pull rod extending out of the accommodating chamber, the pressing cap is movably sleeved on the pull rod, a guiding inclined plane is disposed between the fixing head and the pressing cap, and the pressing cap changes a relative position with the pull rod under the action of the guiding inclined plane when being pulled relative to the pull rod;

the pressing cap is cup-shaped and covers the fixing head, and the guide inclined plane is arranged between the outer wall of the fixing head and the inner wall of the pressing cap.

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