Shock absorption mechanism for stroller
By setting shock-absorbing grooves at the wheel joints between the double rows of wheels of the stroller, and using shock-absorbing seats and spring structures, the problem of existing shock-absorbing mechanisms being too bulky to be suitable for thin-sheet baby strollers is solved, achieving stable shock absorption and space saving.
Patent Information
- Application Number
- CN202422611371.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-29
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2034-10-29
AI Technical Summary
The shock absorption mechanisms of existing strollers are too bulky and not suitable for strollers made of thin sheet metal, causing discomfort to infants and young children on bumpy roads.
A wheel joint is set between the two rows of wheels of the stroller. A shock-absorbing groove is opened on the wheel joint. The shock-absorbing mechanism includes a shock-absorbing seat and a spring. The shock-absorbing seat and the shock-absorbing groove are slidably connected. Axial limiting is achieved by a limiting structure. The wheel joint is designed as a flat structure to reduce space occupation.
It achieves stable shock absorption on thin-plate baby strollers, with good shock absorption effect, compact structure, high connection strength, wide range of applications, and reduced space occupation.
Smart Images
Figure CN223508326U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a shock absorbing mechanism field, concretely relates to a shock absorbing mechanism for children's push car. BACKGROUND
[0002] In prior art, the shock absorbing mechanism is usually arranged on the wheel of children's push car to avoid the uncomfortable feeling of the baby in the push car caused by the shaking vibration from the wheel of the push car when passing the bumpy road.
[0003] The shock absorbing mechanism in the market is too large to be used on some thin plate baby push cars, such as wooden baby push car.
[0004] Therefore, how to solve the above-mentioned problems in prior art has become the subject to be studied and solved by the utility model. UTILITY MODEL CONTENT
[0005] The utility model aims at providing a shock absorbing mechanism for children's push car.
[0006] In order to achieve the above-mentioned purpose, the utility model adopts the technical scheme of:
[0007] A shock absorbing mechanism for children's push car, the double-row wheels of the children's push car are provided with a wheel joint, the double-row wheels are rotatably connected with the wheel joint through the shaft sleeve on the wheel shaft, a shock absorbing groove is arranged on the wheel joint, and the shock absorbing mechanism is arranged in the shock absorbing groove.
[0008] The shock absorbing mechanism comprises a shock absorbing seat, the shock absorbing seat is sleeved outside the shaft sleeve and axially limited by the limiting structure, the shock absorbing seat and the shock absorbing groove are relatively up and down slidable, and a spring is arranged between the shock absorbing seat and the shock absorbing groove, and the extension direction of the spring is the relative sliding direction of the shock absorbing seat and the shock absorbing groove.
[0009] Preferably, the wheel joint is arranged as a flat structure, the two wheels of the double-row wheels are arranged on the left and right sides of the flat structure, and the wheel shaft penetrates the shock absorbing groove and is rotatably connected with the two wheels.
[0010] Preferably, the shock absorbing groove extends to the lower part of the wheel joint and forms an opening on the lower surface of the wheel joint.
[0011] The two ends of the spring abut against the lower part of the shock absorbing seat and the upper groove bottom of the shock absorbing groove respectively.
[0012] Preferably, the shock absorbing seat comprises an inner sliding part, and the inner sliding part is sleeved outside the shaft sleeve.
[0013] The inner sliding part is provided with a positioning seat on each of the front and back sides of the lower end, the positioning seat is in sliding fit with the front and back groove walls of the shock-absorbing groove, the lower end of the spring is in abutment with the positioning seat, and the upper end is in abutment with the upper groove bottom of the shock-absorbing groove.
[0014] Preferably, the middle part of the groove bottom of the shock-absorbing groove is upwardly protruded to form a groove, and the groove is in fit with the upper end of the inner sliding part.
[0015] Preferably, the shock-absorbing seat further comprises two outer shaft connecting parts which are coaxially arranged with the wheel shaft and are arranged on the left and right sides of the inner sliding part, the outer shaft connecting part is in a cylindrical shape, is sleeved on the outside of the shaft sleeve, and is in rotational fit with the circular hole on the wheel.
[0016] Preferably, the shock-absorbing groove is provided with a stop groove outside the edges of the left and right side walls of the wheel joint, and the limiting structure is detachably installed in the stop groove and axially limits the inner sliding part in the shock-absorbing groove.
[0017] Preferably, the limiting structure comprises a gland which is sealed on the outside of the positioning seat, a through hole is formed in the middle part of the gland for passing through the outer shaft connecting part, guide holes are formed in the upper and lower parts of the through hole, and the outer shaft connecting part is relatively slidably arranged in the guide holes.
[0018] Preferably, the gland is further sealed on the outside of the spring.
[0019] Preferably, the edges of the left and right side walls of the inner sliding part are in fit with the inner wall of the gland, and the left and right side walls of the inner sliding part are outwardly protruded to form bosses, and the front and back side walls of the bosses are in sliding fit with the front and back hole walls of the guide holes.
[0020] The working principle and advantages of the utility model are as follows:
[0021] The utility model discloses a shock-absorbing mechanism is arranged in the shock-absorbing groove of the wheel joint between the double-row wheels, and the shock-absorbing mechanism is coaxially connected with the double-row wheels on the wheel shaft, which can ensure stable shock absorption, avoid occupying more space, and be suitable for being installed on baby strollers made of various materials, and has wide application range.
[0022] The utility model discloses a wheel joint is arranged as a flat structure, the shock-absorbing mechanism is simple and compact, is connected with the wheel joint and the wheel shaft skillfully, can ensure the stability of shock absorption, can further reduce the space occupation, and can make the wheel joint be connected on thinner plate.
[0023] The outer shaft connecting part of the shock-absorbing mechanism is connected with the shaft sleeve, wheel shaft and round hole on the wheel, and the connection strength between the wheel, wheel joint and shock-absorbing mechanism is increased, so that the overall structure of the shock-absorbing mechanism combined with the double-row wheels is compact and centralized, the stability is high, and the shock-absorbing effect is better.
[0024] The utility model discloses a double-spring shock-absorbing, and the shock-absorbing effect is better. BRIEF DESCRIPTION OF DRAWINGS
[0025] BRIEF DESCRIPTION OF DRAWINGS Figure 1 It is the left view axis measurement exploded view of the utility model embodiment;
[0026] BRIEF DESCRIPTION OF DRAWINGS Figure 2 It is the right view axis measurement exploded view of the utility model embodiment;
[0027] BRIEF DESCRIPTION OF DRAWINGS Figure 3 It is the wheel and wheel joint exploded view of the utility model embodiment;
[0028] BRIEF DESCRIPTION OF DRAWINGS Figure 4 It is the wheel joint sectional view of the utility model embodiment;
[0029] BRIEF DESCRIPTION OF DRAWINGS Figure 5 It is the shock-absorbing seat axis measurement drawing of the utility model embodiment.
[0030] In the above drawing:
[0031] 100 wheel joint;
[0032] 101 shock-absorbing groove;
[0033] 102 opening;
[0034] 103 recess;
[0035] 104 stop groove;
[0036] 200 wheel shaft;
[0037] 300 wheel;
[0038] 301 shaft sleeve;
[0039] 302 wheel cover plate;
[0040] 303 round hole;
[0041] 1 shock-absorbing seat;
[0042] 11 inner sliding part;
[0043] 111 positioning seat;
[0044] 112 boss;
[0045] 12 outer shaft connecting part;
[0046] 2 spring;
[0047] 3 gland;
[0048] 31 perforation;
[0049] 32 guide hole. DETAILED DESCRIPTION
[0050] The utility model will be further described below in combination with the drawings and examples:
[0051] Examples: the following will be described in detail with figures and the present case is clearly explained, any person skilled in the art can be changed and modified by the technology taught by the present case after understanding the examples of the present case, which does not deviate from the spirit and scope of the present case.
[0052] The language in this paper is only for describing specific embodiments and is not intended to limit the present case. The singular form, such as "one", "this", "this", "this" and "this", as used herein, also includes the plural form.
[0053] As used herein, "connected" or "positioned" can mean that two or more components or devices are in direct physical contact with each other or indirectly in physical contact with each other, or can mean that two or more components or devices operate or act on each other.
[0054] As used herein, "contain", "include", "have" and the like are open terms, that is, they mean to include but not limited to.
[0055] As used herein, "front", "back", "up", "down", "left", "right" and the like are directional words, which are only used to illustrate the positional relationship between the structures in the present case, and are not used to limit the protection scheme and the specific direction of the actual implementation of the present case.
[0056] Referring to the accompanying Figures 1-5 A shock absorption mechanism for a child stroller, a wheel joint 100 is provided between the double-row wheels of the child stroller, the double-row wheels are rotatably connected to the wheel joint 100 through the shaft sleeve 301 of the wheel shaft 200, a shock absorption groove 101 is formed on the wheel joint 100, and the shock absorption mechanism is arranged in the shock absorption groove 101.
[0057] The shock absorption mechanism comprises a shock absorption seat 1, which is sleeved outside the shaft sleeve 301 and axially limited by a limiting structure, the shock absorption seat 1 can slide up and down relative to the shock absorption groove 101, and a spring 2 is arranged between the shock absorption seat 1 and the shock absorption groove 101, the extension direction of the spring 2 is the relative sliding direction of the shock absorption seat 1 and the shock absorption groove 101. When the child sits on the stroller and moves, the spring 2 can absorb the bidirectional vibration from the stroller frame and the wheel 300, play a buffering role, and realize shock absorption.
[0058] The wheel joint 100 is arranged in a flat structure, the two wheels 300 of the double-row wheel are arranged on the left and right sides of the flat structure, and the wheel shaft 200 penetrates the shock absorbing groove 101 and is rotationally connected with the two wheels 300. The flat wheel joint 100 can make the two wheels 300 more concentrated, the whole double-row wheel smaller in size, and facilitate installation on a thinner plate.
[0059] In this embodiment, the shock absorbing groove 101 extends to the lower part of the wheel joint 100 and forms an opening 102 on the lower surface of the wheel joint 100; the two ends of the spring 2 abut against the lower part of the shock absorbing seat 1 and the upper groove bottom of the shock absorbing groove 101, respectively. In other embodiments, the shock absorbing groove 101 can also be arranged in a closed manner (not open), that is, the opening is in the middle of the wheel joint 100, so that the shock absorbing seat 1 and the upper and lower groove bottoms of the shock absorbing groove 101 need to be provided with springs 2 (not shown in the figure).
[0060] In this embodiment, the shock absorbing seat 1 includes an inner sliding part 11 and two outer shaft connecting parts 12 coaxially arranged with the wheel shaft 200 and arranged on the left and right sides of the inner sliding part 11.
[0061] Among them:
[0062] The inner sliding part 11 is sleeved outside the shaft sleeve 301, and the outer shaft connecting part 12 is arranged in a cylindrical shape, which is sleeved outside the shaft sleeve 301 and rotationally matched with the circular hole 303 on the wheel 300, and the wheel shaft 200 is rotationally connected with the shaft sleeve 301. The circular hole 303 is arranged on the hub of the wheel 300, the shaft sleeve 301 is fixed on the wheel cover plate 302 in the middle of the wheel 300, and the wheel cover plate 302 is detachably connected with the hub of the wheel 300 through a screw. The wheel cover plate 302 drives the shaft sleeve 301 to penetrate the circular hole 303 and insert into the outer shaft connecting part 12, and when the shaft sleeve 301 is inserted into the outer shaft connecting part 12, the outer shaft connecting part 12 is also inserted into the circular hole 303, so that the radial position of the outer shaft connecting part 12 is limited, and the connection strength between the shock absorbing mechanism and the wheel joint 100 and the wheel 300 is strengthened. The T-shaped head at one end of the wheel shaft 200 abuts against the end face of the shaft sleeve 301, and the other end of the wheel shaft 200 is connected with a screw (not shown in the figure), and the nail cap of the screw abuts against the end face of the shaft sleeve 301 on the other wheel cover plate 302.
[0063] The inner sliding part 11 is provided with a positioning seat 111 on each of the front and back sides of the lower end, which is in sliding fit with the front and back groove walls of the shock absorption groove 101. The positioning seat 111 comprises a base and a positioning column integrally arranged on the upper surface of the base. The lower end of the spring 2 is in abutment with the positioning seat 111, specifically, the lower end of the spring 2 is sleeved outside the positioning column and is in abutment with the upper surface of the base. The upper end of the spring 2 is in abutment with the upper groove bottom of the shock absorption groove 101. Correspondingly, the middle part of the groove bottom of the shock absorption groove 101 is upwardly protruded to form a groove 103, which is in fit with the upper end of the inner sliding part 11.
[0064] The wheel shaft 200 rotates in the inner sliding part 11 and the shaft sleeve 301. When the double-row wheels are walking, the inner sliding part 11 drives the positioning seat 111 to slide up and down in the shock absorption groove 101, and the positioning seat 111 compresses the spring 2, so as to realize shock absorption. In addition, the upper end of the inner sliding part 11 can be guided and limited by the groove 103, and the lower end can be guided and limited by the cooperation of the positioning seat 111 and the shock absorption groove 101, so as to realize the stable sliding of the inner sliding part 11, and further realize the stable compression of the spring 2, thereby ensuring the shock absorption effect and prolonging the service life of the spring 2.
[0065] In the embodiment, the shock absorption groove 101 is provided with a stop groove 104 outside the edges of the left and right side walls of the wheel joint 100. The limiting structure is detachably installed in the stop groove 104 and axially limits the inner sliding part 11 in the shock absorption groove 101, so as to avoid the movement of the inner sliding part 11 along the axial direction of the rotating shaft, and ensure that it can only slide up and down.
[0066] The limiting structure comprises a gland 3 which is blocked outside the positioning seat 111. The middle part of the gland 3 is provided with a through hole 31 for passing through the outer shaft connecting part 12. The through hole 31 is in communication with a guide hole 32. The outer shaft connecting part 12 and the guide hole 32 can slide up and down relative to each other. The setting of the through hole 31 can facilitate the installation of the whole shock absorption seat 1 in the shock absorption groove 101. The setting of the guide hole 32 enables the outer shaft connecting part 12 to slide up and down with the inner sliding part 11. The gland 3 is blocked outside the two sides of the positioning seat 111. The through hole 31 and the guide hole 32 can only expose the inner sliding part 11. Therefore, the positioning seat 111 can be blocked in the shock absorption groove 101 by the gland 3 in the whole sliding stroke, so as to realize the axial limitation of the whole shock absorption seat 1.
[0067] In order to avoid the exposure of the spring 2, the gland 3 is also blocked outside the spring 2, so as to protect the spring 2 and reduce the influence of dust, rain and the like on the service life of the spring 2.
[0068] In the embodiment, the left and right side wall edges of the inner sliding part 11 are attached to the inner wall of the cover 3, so that the cover 3 limits the axial direction of the inner sliding part 11. The left and right side walls of the inner sliding part 11 are provided with protrusions 112, and the front and rear walls of the protrusions 112 are slidably connected to the front and rear walls of the guide hole 32. The protrusions 112 can limit the front and rear directions of the inner sliding part 11, so that the shock-absorbing seat 1 can only stably slide up and down, and stable shock absorption is achieved.
[0069] The above embodiment is only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and to implement it, and it cannot limit the protection scope of the present application. Any equivalent changes or modifications made in accordance with the spirit and essence of the present application shall be covered within the protection scope of the present application.
Claims
1. A shock-absorbing mechanism for a stroller, wherein a wheel joint is provided between the two rows of wheels of the stroller, and the two rows of wheels are rotatably connected to the wheel joint via bushings on the wheel axles, characterized in that: The wheel joint is provided with a shock-absorbing groove, and the shock-absorbing mechanism is located in the shock-absorbing groove; The shock absorption mechanism includes a shock absorption seat, which is sleeved on the outside of the bushing and is axially limited by a limiting structure. The shock absorption seat and the shock absorption groove can slide up and down relative to each other, and a spring is provided between them. The extension and retraction direction of the spring is the relative sliding direction of the shock absorption seat and the shock absorption groove.
2. The shock absorption mechanism for a children's stroller according to claim 1, characterized in that: The wheel joint is configured as a flat structure, and the two wheels of the double-row wheel are arranged on the left and right sides of the flat structure. The wheel axle passes through the shock-absorbing groove and is rotatably connected to the two wheels.
3. A shock-absorbing mechanism for a stroller according to claim 2, characterized in that: The shock-absorbing groove extends to the lower part of the wheel joint and forms an opening on the lower surface of the wheel joint; The two ends of the spring abut against the lower part of the shock absorber seat and the bottom of the upper groove of the shock absorber groove, respectively.
4. A shock-absorbing mechanism for a stroller according to claim 3, characterized in that: The shock absorber includes an inner sliding part, which is sleeved on the outside of the bushing. The inner sliding part has a positioning seat on each of the front and rear sides at the lower end. The positioning seat slides in cooperation with the front and rear groove walls of the shock-absorbing groove. The lower end of the spring abuts against the positioning seat, and the upper end abuts against the bottom of the upper groove of the shock-absorbing groove.
5. A shock-absorbing mechanism for a stroller according to claim 4, characterized in that: The bottom of the shock-absorbing groove protrudes upward to form a groove, which mates with the upper end of the inner sliding part.
6. A shock-absorbing mechanism for a stroller according to claim 4, characterized in that: The shock absorber also includes two outer shaft connecting parts connected to the left and right sides of the inner sliding part and coaxially arranged with the wheel axle. The outer shaft connecting parts are cylindrical, sleeved on the outside of the bushing, and rotatably engaged with the round hole on the wheel.
7. A shock-absorbing mechanism for a stroller according to claim 6, characterized in that: The shock-absorbing groove is provided with a stop groove on the outer edge of the left and right side walls of the wheel joint. The limiting structure can be detachably installed in the stop groove and axially limits the inner sliding part in the shock-absorbing groove.
8. A shock-absorbing mechanism for a stroller according to claim 7, characterized in that: The limiting structure includes a pressure cap that seals the outside of the positioning seat. The pressure cap has a through hole in its middle for the outer shaft connecting part to pass through. The through hole is connected to a guide hole at the top and bottom. The outer shaft connecting part and the guide hole can slide up and down relative to each other.
9. A shock-absorbing mechanism for a stroller according to claim 8, characterized in that: The cap also seals the outside of the spring.
10. A shock-absorbing mechanism for a stroller according to claim 8, characterized in that: The left and right side wall edges of the inner sliding part are in contact with the inner wall of the pressure cap, and the left and right side walls of the inner sliding part are provided with protrusions, the front and rear side walls of the protrusions are in sliding cooperation with the front and rear hole walls of the guide hole.