Brake mechanism of baby carriage

Abstract

The utility model discloses a brake mechanism of a baby carriage, which comprises a wheel seat, a wheel component with a brake part, a brake part slidably arranged in the wheel seat, a rotatable brake handle and a ratchet wheel arranged on the wheel seat on one side, a first reset part arranged between the brake handle and the corresponding wheel seat, and a plurality of ratchet grooves arranged on the peripheral surface of one end of the ratchet wheel, the brake handle is rotationally connected with a pawl which always presses the ratchet wheel and can drive the ratchet wheel to do one-way intermittent motion; a linkage piece capable of sliding relative to the side wheel seat is arranged in the side wheel seat, and a brake piece and the linkage piece in the side wheel seat are respectively matched with the ratchet wheel and can reversely slide along with the rotation of the ratchet wheel; the brake piece in the wheel seat on the other side is connected with the linkage piece through a traction cable; when the brake handle rotates once in the forward direction, the ratchet rotates once along with the brake handle, the brake pieces on the two sides can slide outwards or inwards at the same time along with rotation of the ratchet, and therefore the brake pieces on the two sides are controlled to be matched with the brake parts for braking or not, and simultaneous braking or braking releasing on the two sides is achieved.

Description

Technical Field

[0001] The utility model relates to the field of baby carriages, and in particular to a brake mechanism of a baby carriage. Background Art

[0002] There are many kinds of baby carriages on the market. In order to ensure the safety performance of baby carriages, brake mechanisms are generally provided on baby carriages to prevent accidents when children are riding in the baby carriages.

[0003] The brake mechanism of an existing stroller typically includes a connecting tube extending left and right along the stroller and having a hollow cavity formed therein, wheel seats located on either side of the connecting tube, a wheel assembly rotatably mounted on the wheel seat, a brake portion disposed on the wheel assembly and rotating therewith, a brake handle disposed in the middle of the connecting tube and rotatable relative thereto, brake members slidably disposed within the wheel seats on either side and cooperating with the corresponding brake portions, and a transmission mechanism located on either side that transmission-connects the brake handles to the brake members on either side. The brake members can slide as the brake handles rotate, thereby controlling whether the brake members cooperate with the brake portions for braking. This type of stroller brake mechanism has the following two main drawbacks: 1. The overall structure is relatively complex, and the coordination between the various components is also relatively complex, resulting in high costs and cumbersome assembly. 2. Braking is generally achieved by stepping on the brake handle, and to release the brake, the brake handle must be lifted upward with the foot, which can stain the shoe surface and even scratch the toes. Summary of the Invention

[0004] The purpose of the utility model is to provide a brake mechanism for a baby carriage, which utilizes the cooperation between the pawl on the brake handle and the ratchet to realize the unidirectional intermittent movement of the ratchet, and through the special structural design and cooperation between the ratchet and the corresponding brake parts and linkage parts, each rotation of the ratchet drives the brake parts on both sides to move laterally outward or inward, so that the brake parts enter and remain in the braking state or the released state, and the use is safe and reliable.

[0005] The technical solution of the utility model is: a brake mechanism of a baby carriage, comprising wheel seats located on both sides of the frame, wheel assemblies mounted on the wheel seats, brake parts arranged on the wheel assemblies and rotating therewith, brake members slidably arranged in the wheel seats on both sides and cooperating with the corresponding brake parts, a brake handle and a ratchet wheel which can rotate relative to the wheel seat are provided on one side, a first reset member for rotating and resetting the brake handle is provided between the brake handle and the corresponding wheel seat, a plurality of ratchet grooves are provided on the outer peripheral surface of the ratchet wheel, and a ratchet wheel which is always pressed against the ratchet wheel is rotatably connected to the brake handle. The pawl and the brake handle can drive the ratchet to move intermittently in one direction; the side wheel seat is provided with a linkage part that can slide relative to it, and the brake part and the linkage part therein respectively cooperate with the ratchet, and the two can slide in the opposite direction as the ratchet rotates; the brake part in the other side wheel seat is connected to the linkage part through a traction rope; the brake handle is rotated in the forward direction once, and the ratchet rotates once accordingly, and the brake parts on both sides can slide outward or inward at the same time as the ratchet rotates, thereby controlling whether the brake parts on both sides cooperate with the brake part to brake or not, so as to achieve simultaneous braking or releasing of the brakes on both sides.

[0006] As a preferred technical solution, the brake handle and ratchet are installed on the side of the corresponding wheel seat away from the wheel assembly, and the end face of the ratchet close to the wheel seat is formed with a plurality of inclined guide grooves connected end to end, and a limited step is formed between the high end of the previous inclined guide groove and the low end of the rear inclined guide groove; the brake part and the linkage part in the wheel seat corresponding to the ratchet are arranged to slide left and right, and their inner ends are simultaneously slidably engaged with different inclined guide grooves of the ratchet; each rotation of the ratchet can drive the brake part on the same side to move laterally outward or inward, and the linkage part to move laterally inward or outward, thereby making the brake parts on both sides enter and remain in the braking state or the released state.

[0007] As a preferred technical solution, a third reset member is provided between the brake member cooperating with the ratchet and the corresponding wheel seat, and the third reset member enables the corresponding brake member to always press inward toward the ratchet; a fourth reset member is provided between the brake member connected to the linkage member and the corresponding wheel seat, and the fourth reset member enables the corresponding brake member to always press outward toward the braking part of the wheel assembly.

[0008] As a preferred technical solution, the wheel seat on which the brake handle and ratchet are installed includes a seat body with an outer opening and a cover seat cooperating therewith, the cover seat having a first slide groove and a second slide groove for sliding the brake part and the linkage part cooperating with the ratchet respectively; the seat body and the cover seat respectively have openings for extending the brake part and the linkage part.

[0009] As a preferred technical solution, the end of the base away from the wheel assembly is provided with a boss for mounting the ratchet; the brake handle sleeve is arranged outside the ratchet and can rotate relative to it; the side of the brake handle away from the base is provided with an inner cover plate fixed relative to the base.

[0010] As a preferred technical solution, a second reset member is provided between the pawl and the brake handle, which enables the pawl to always press against the outer peripheral surface of the ratchet wheel having the ratchet groove.

[0011] As a preferred technical solution, the brake handle has a pedal portion extending outward. Preferably, the pawl is rotatably connected below the pedal portion of the brake handle, and the second reset member is provided between the pawl and the pedal portion.

[0012] In order to avoid slipping when stepping on the brake handle, the stepping surface of the stepping portion is preferably provided with an anti-slip strip.

[0013] Compared with the prior art, this application has the following advantages:

[0014] 1. The utility model has a novel structure. It utilizes the pawl on the brake handle to cooperate with the ratchet to realize the unidirectional intermittent movement of the ratchet. Through the special structural design and cooperation between the ratchet and the corresponding brake member and linkage member, each rotation of the ratchet drives the brake members on both sides to move laterally outward or inward, so that the brake members enter and remain in the braking state or the released state, which is safe and reliable to use.

[0015] 2. The braking operation and the releasing operation of the utility model are both pedaling operations, and are performed alternately, that is, stepping on the brake lever once is braking, and stepping on the brake lever again is releasing the brake, which is more convenient and quick to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. The drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] The structures, proportions, sizes, etc. depicted in the drawings of this specification are only used to match the contents disclosed in this specification so as to facilitate understanding and reading by those familiar with this technology. They are not intended to limit the conditions under which the present invention can be implemented, and therefore have no substantive technical significance. Any structural modifications, changes in proportional relationships, or adjustments in size, without affecting the efficacy and objectives that can be achieved by the present invention, should still fall within the scope of the technical contents disclosed in the present invention.

[0018] Figure 1 This is a schematic structural diagram of the utility model when it is used for a baby carriage and is in a brake-released state;

[0019] Figure 2 for Figure 1 Schematic diagram of the local structure between the two side wheel seats;

[0020] Figure 3 This is a schematic diagram of the structure of the utility model when it is used for a baby carriage and is in a braking state;

[0021] Figure 4 for Figure 3 Schematic diagram of the local structure between the two side wheel seats;

[0022] Figure 5 This is a schematic diagram of the assembly structure of a wheel seat on one side of the present invention;

[0023] Figure 6 This is a schematic diagram of the assembly structure of the wheel seat on one side of the utility model at another angle;

[0024] Figure 7 This is a schematic structural diagram of a wheel seat on one side of the present invention;

[0025] Figure 8 This is a structural diagram of another angle of the wheel seat on one side of the utility model;

[0026] Figure 9 This is a schematic structural diagram of the brake seat in the utility model;

[0027] Figure 10 This is a structural diagram of the brake seat in the utility model from another angle;

[0028] Figure 11 This is a schematic diagram of the structure of the utility model when it is used for a baby carriage and the brake handle is not stepped on;

[0029] Figure 12 This is a structural schematic diagram of the utility model when the utility model is used in a baby carriage and the brake handle is stepped on.

[0030] Wherein: 1, 1a, 1b wheel seat; 101 seat body; 102 cover seat; 1021 first slide slot; 1022 second slide slot;

[0031] 2 wheel assembly; 201 brake unit;

[0032] 3, 3a, 3b brake parts;

[0033] 4 brake handle; 401 pedal; 402 anti-slip strip;

[0034] 5 ratchet; 501 ratchet groove; 502 inclined guide groove;

[0035] 6. First reset member;

[0036] 7 pawls;

[0037] 8 linkage parts;

[0038] 9 traction rope;

[0039] 10 third reset member;

[0040] 11 fourth restoration member;

[0041] 12 inner cover;

[0042] 13. Second reset member. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions of the embodiments of the present application will be clearly and completely described below in conjunction with the drawings of the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the described embodiments of the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application. It is understood that, in the absence of conflict, some technical means of the various embodiments described herein can be replaced or combined with each other.

[0044] In the description and claims of this application, the terms "first," "second," etc., if used, are used solely to distinguish the objects being described and do not convey any sequential or technical meaning. Thus, a term defined as "first," "second," etc. may explicitly or implicitly include one or more of such objects. Furthermore, "a," "an," and similar terms do not indicate a limitation on quantity, but rather indicate the presence of at least one, and "plurality" means at least two.

[0045] In the description of the specification and claims of this application, if there are terms such as "connect", "install", "fix", "accommodate", etc., unless otherwise specified, they should be understood in a broad sense. For example, "connection" can be a separate connection or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a non-detachable connection or a detachable connection. For another example, "accommodate" does not necessarily mean complete accommodation of the entire body. This concept also includes the accommodation of a part that protrudes from the outside. For those skilled in the art, the specific meanings of the aforementioned terms in this application can be understood according to the specific circumstances.

[0046] In the description and claims of this application, if there are terms such as "upper," "lower," and "horizontal" indicating orientations or positional relationships, these are based on the orientations or positional relationships shown in the accompanying drawings. They are used only to facilitate a clear and simplified description of this application and are not intended to indicate or imply that the elements referred to must have a specific orientation, be constructed, or operate in a specific orientation. These directional terms are relative concepts and are used for relative description and clarification. They may change accordingly depending on the orientation of the components in the drawings. For example, if the device in the figure is turned over, elements described as "below" other elements would be positioned "above" the other elements.

[0047] In the description of the specification and claims of this application, if the term "if" is present, it can generally be interchanged with "when" or "at" or "in response to determining" or "in response to detecting", depending on the context.

[0048] In the description of the specification and claims of this application, if there is a "direction" of movement, including movement with a directional component, the term "in the direction" is not necessarily understood as movement only in that one direction. For those skilled in the art, the specific meaning of the aforementioned terms in this application can be understood according to the specific circumstances.

[0049] like Figures 1 to 12 The present invention illustrates a brake mechanism for a children's stroller, comprising wheel seats 1 located on either side of the frame, wheel assemblies 2 mounted on the wheel seats 1, brake components 201 disposed on the wheel assemblies 2 and rotating therewith, and brake members 3 slidably disposed within the wheel seats 1 on either side and cooperating with the corresponding brake components 201. The brake components are generally brake pins, and the brake components 201 are brake discs having multiple locking slots into which the brake pins engage. The brake engagement between the two refers to the locking of the brake pins into the brake disc's locking slots. This is conventional technology in the art and is not specifically limited or elaborated upon here.

[0050] The first reset member 6 for rotating the brake handle 4 is provided between the brake handle 4 and the corresponding wheel seat 1a, and the outer peripheral surface of one end of the ratchet 5 is provided with a plurality of ratchet grooves 501. The brake handle 4 is rotatably connected to a pawl 7 which always presses against the ratchet 5, and the brake handle 4 can drive the ratchet 5 to move intermittently in one direction; a linkage member 8 which can slide relative to the side wheel seat 1a is provided therein, and the brake member 3a and the linkage member 8 therein cooperate with the ratchet 5 respectively, and the two can slide in opposite directions as the ratchet 5 rotates; the brake member 3b in the other side wheel seat 1b is connected to the linkage member 8 by a traction rope 9; the brake handle 4 rotates forward once, and the ratchet 5 rotates accordingly, and the brake members 3a and 3b on both sides can slide outward or inward at the same time as the ratchet 5 rotates, thereby controlling whether the brake members 3a and 3b on both sides cooperate with the braking part 201 for braking, so as to achieve simultaneous braking or releasing of the brakes on both sides.

[0051] In this embodiment, the brake handle 4 and the ratchet 5 are installed on the side of the corresponding wheel seat 1a away from the wheel assembly 2, and the end face of the ratchet 5 close to the wheel seat 1a is formed with a plurality of inclined guide grooves 502 connected end to end, and a limited step is formed between the high end of the previous inclined guide groove 502 and the low end of the rear inclined guide groove 502; the brake part 3a and the linkage part 8 in the wheel seat 1a corresponding to the ratchet 5 are arranged to slide left and right, and their inner ends are simultaneously slidably engaged with different inclined guide grooves 502 of the ratchet 5; each rotation of the ratchet 5 can drive the brake part 3a on the same side to move laterally outward or inward, and the linkage part 8 to move laterally inward or outward, thereby making the brake parts 3a and 3b on both sides enter and remain in the braking state or the released state. Among them, the lower end of the inclined guide groove 502 refers to the end with a larger groove depth, which can be interpreted as the end axially farther away from the wheel seat 1a in the figure of this embodiment; the high end of the inclined guide groove 502 refers to the end with a shallower groove depth, which can be interpreted as the end axially closer to the wheel seat 1a in the figure of this embodiment.

[0052] In this embodiment, a third reset member 10 is provided between the brake member 3a cooperating with the ratchet 5 and the corresponding wheel seat 1a, and the third reset member 10 enables the corresponding brake member 3a to always press inward toward the ratchet 5; a fourth reset member 11 is provided between the brake member 3b connected to the linkage member 8 and the corresponding wheel seat 1b, and the fourth reset member 11 enables the corresponding brake member 3b to always press outward toward the braking part 201 of the corresponding wheel assembly 2.

[0053] In this embodiment, the wheel base 1a, on which the brake handle 4 and ratchet 5 are mounted, comprises a base 101 with an outer opening and a cover 102 mating therewith. The cover 102 has a first slot 1021 and a second slot 1022, respectively, for sliding the brake member 3a and the linkage member 8 mating with the ratchet 5. Both the base 101 and the cover 102 have openings for extending the brake member 3a and the linkage member 8. The separate design of the base 101 and the cover 102 facilitates assembly of internal components.

[0054] In this embodiment, a boss 1011 is provided on the end of the base body 101 away from the wheel assembly 2 for mounting the ratchet 5; the brake handle 4 is mounted outside the ratchet 5 and can rotate relative to it; an inner cover plate 12 is provided on the side of the brake handle 4 away from the base body 101 and is fixed relative to the base body 101.

[0055] In this embodiment, a second reset member 13 is provided between the pawl 7 and the brake handle 4 , which enables the pawl 7 to always press against the outer peripheral surface of the ratchet 5 having the ratchet groove 501 .

[0056] In this embodiment, the brake handle 4 has an outwardly extending pedal portion 401. Preferably, the pawl 7 is rotatably connected below the pedal portion 401 of the brake handle 4, and the second reset member 13 is provided between the pawl 7 and the pedal portion 401.

[0057] In order to avoid slipping when stepping on the brake handle 4 , the stepping surface of the stepping portion 401 preferably has an anti-slip strip 402 .

[0058] The working principle of this embodiment is:

[0059] Assuming that the initial state is the released brake state, the brake member 3a cooperating with the ratchet 5 is at the lower end of the inclined guide groove 502 of the ratchet 5, that is, the innermost movement position, and the brake member 3a is in the unlocked position; at the same time, the linkage member 8 is at the highest position of the inclined guide groove 502 of the ratchet 5, that is, the outermost movement position, and the brake member 3b on the other side connected to the linkage member 8 is also in the unlocked position; therefore, the brake members 3a and 3b on both sides and the braking part 201 are not cooperating with each other for braking, and are in a double released brake state.

[0060] When braking is required, the brake lever 4 is stepped on, causing it to rotate forward. The pawl 7 hooks onto the ratchet 5 and drives it to rotate. The brake member 3a, engaged with the ratchet 5, slides from the lower end of the ratchet 5's inclined guide slot 502 to the upper end, reaching its outermost position and pressing against the brake portion 201 of the ipsilateral wheel assembly 2 to achieve braking engagement. The linkage member 8 slides from the upper end of the ratchet 5's inclined guide slot 502 to the lower end, reaching its innermost position. The traction cable 8 is now released. The brake member 3b on the other side, under the reset action of the fourth reset member 11, moves outward, pressing against the brake portion 201 of the ipsilateral wheel assembly 2 to achieve braking engagement. Consequently, both brake members 3a and 3b engage the brake portion 201, achieving a dual braking state. Simultaneously, the pawl 7 disengages the ratchet 5, no longer driving the ratchet 5. The brake lever 4 is released, and under the action of the first reset member 6, the brake lever 4 returns to its initial position.

[0061] To release the brake, the brake lever 4 is stepped on again, causing it to rotate forward again from its initial position. Similarly, the pawl 7 engages the ratchet 5 and drives it to rotate. The brake member 3a, engaged with the ratchet 5, now slides from the upper end of the ratchet 5's inclined guide slot 502 to the lower end, reaching its innermost position and disengaging the brake portion 201 of the ipsilateral wheel assembly 2. The linkage member 8 slides from the lower end of the ratchet 5's inclined guide slot 502 to the upper end, reaching its outermost position. The traction cable 9 is now tensioned, and the brake member 3b on the other side, pulled by the traction cable 9, moves inward, disengaging the brake portion 201 of the ipsilateral wheel assembly 2. Consequently, neither brake member 3a, 3b engages the brake portion 201, resulting in a double-released state. Simultaneously, the pawl 7 disengages the ratchet 5, no longer driving its rotation. The brake lever 4 is released, and the first return member 6 causes the brake lever 4 to return to its initial position.

[0062] The utility model has a novel structure. It utilizes the pawl 7 on the brake handle 4 to cooperate with the ratchet 5 to achieve unidirectional intermittent movement of the ratchet 5. Through the special structural design and cooperation between the ratchet 5 and the corresponding brake member 3a and the linkage member 8, each rotation of the ratchet 5 drives the brake members 3a and 3b on both sides to move laterally outward or inward, so that the brake members 3a and 3b enter and remain in the braking state or the released state, which is safe and reliable to use. In addition, the braking operation and the release operation of the utility model are both stepped on and performed alternately. That is, stepping on the brake handle once is braking, and stepping on the brake handle again is releasing the brake, which is more convenient and quick to operate.

[0063] In the description of this specification, the use of terms such as "preferred" or "optional" as preferred embodiments of the present invention indicates that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0064] The above embodiments are merely illustrative of the detailed embodiments of the present invention. The present invention is not limited to the detailed embodiments described above, nor does it necessarily rely on the detailed embodiments to be implemented. Those skilled in the art will appreciate that any improvements to the present invention, equivalent replacements of raw materials for the products of the present invention, addition of auxiliary ingredients, and selection of specific methods, etc., fall within the scope of protection and disclosure of the present invention.

Claims

1. A brake mechanism for a baby stroller, comprising wheel seats located on both sides of a frame, wheel assemblies mounted on the wheel seats, brake components disposed on the wheel assemblies and rotating therewith, and brake members slidably disposed within the wheel seats on both sides and cooperating with the corresponding brake components, characterized in that: A brake handle and a ratchet which can rotate relative to each other are provided on the wheel seat on one side, and a first reset member for rotating and resetting the brake handle is provided between the brake handle and the corresponding wheel seat, and the outer peripheral surface of the ratchet is provided with a plurality of ratchet grooves, and the brake handle is rotatably connected to a pawl which always presses against the ratchet, and the brake handle can drive the ratchet to move intermittently in one direction; a linkage member which can slide relative to the side wheel seat is provided inside the side wheel seat, and the brake member and the linkage member inside the linkage member cooperate with the ratchet respectively, and both can slide in opposite directions as the ratchet rotates; the brake member in the wheel seat on the other side is connected to the linkage member through a traction rope; the brake handle rotates forward once, and the ratchet rotates accordingly, and the brake members on both sides can slide outward or inward at the same time as the ratchet rotates, thereby controlling whether the brake members on both sides cooperate with the braking part for braking, so as to achieve simultaneous braking or releasing of the brakes on both sides.

2. The brake mechanism of a baby carriage according to claim 1, characterized in that: The brake handle and ratchet are installed on the side of the corresponding wheel seat away from the wheel assembly, and the end face of the ratchet close to the wheel seat is formed with a plurality of inclined guide grooves connected end to end, and a limited step is formed between the high end of the previous inclined guide groove and the low end of the rear inclined guide groove; the brake part and the linkage part in the wheel seat corresponding to the ratchet are arranged to slide left and right, and their inner ends are simultaneously slidably matched with different inclined guide grooves of the ratchet; each rotation of the ratchet can drive the brake part on the same side to move laterally outward or inward, and the linkage part to move laterally inward or outward, thereby making the brake parts on both sides enter and remain in the braking state or the released state.

3. The brake mechanism of a baby carriage according to claim 1, characterized in that: A third reset member is provided between the brake member that cooperates with the ratchet and the corresponding wheel seat, and the third reset member enables the corresponding brake member to always press inward toward the ratchet; a fourth reset member is provided between the brake member connected to the linkage member and the corresponding wheel seat, and the fourth reset member enables the corresponding brake member to always press outward toward the braking part of the wheel assembly.

4. The brake mechanism of a baby carriage according to claim 1, characterized in that: The wheel seat on which the brake handle and ratchet are installed includes a seat body with an outer opening and a cover seat cooperating therewith, wherein the cover seat has a first slide groove and a second slide groove for sliding a brake member and a linkage member cooperating with the ratchet respectively; the seat body and the cover seat respectively have openings for extending the brake member and the linkage member.

5. The brake mechanism of a baby carriage according to claim 4, characterized in that: The end of the seat away from the wheel assembly is provided with a boss for mounting the ratchet; the brake handle sleeve is arranged outside the ratchet and can rotate relative to it; the side of the brake handle away from the seat is provided with an inner cover plate fixed relative to the seat.

6. The brake mechanism of a baby carriage according to claim 1, characterized in that: A second reset member is provided between the pawl and the brake handle, which enables the pawl to always press against the outer peripheral surface of the ratchet wheel having the ratchet groove.

7. The brake mechanism of a baby carriage according to claim 1, characterized in that: The brake handle is provided with a pedal portion extending outwards.

8. The brake mechanism of a baby carriage according to claim 7, characterized in that: The treading surface of the treading portion is provided with an anti-slip strip.

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