Push handle assembly and stroller

Abstract

The utility model relates to the technical field of baby carriages, in particular to a push handle assembly and a baby stroller. The push handle assembly comprises a first pipe body, a second pipe body and a locking assembly, a plurality of locking holes are formed in the first pipe body at intervals in the length direction of the first pipe body, the second pipe body is inserted into the first pipe body and can slide relative to the first pipe body in the length direction, and the locking assembly comprises a fixing base, a locking piece and an unlocking piece. The fixing base is connected to the end, stretching into the first pipe body, of the second pipe body, the fixing base is provided with a guide groove extending in the direction perpendicular to the length direction, the locking piece is arranged in the guide groove, and the unlocking piece is connected with the locking piece and can drive the locking piece to move to the locking position and the unlocking position. Wherein the locking piece is configured to be in clearance fit with the guide groove at the unlocking position and to be in close fit with the guide groove at the locking position. The stroller comprises the push handle assembly. The push handle assembly and the baby stroller are stable in sliding and not prone to shaking.

Description

Technical Field

[0001] The utility model relates to the technical field of baby carriages, in particular to a push handle assembly and a baby carriage. Background Art

[0002] A baby carriage is a carriage structure for infants to ride out. Most of them are composed of a frame, wheels, a handle, a seat, etc. Due to the different sizes and heights of baby carriages, in order to adapt to the different pushing habits of users for baby carriages, the push handle assembly is often designed as a telescopic structure relative to the frame.

[0003] At present, the telescopic push handle assembly mainly includes an upper push rod and a lower push rod. The upper push rod is inserted into the lower push rod, and the upper push rod can slide relative to the lower push rod. The upper push rod is provided with a locking member, and the lower push rod is provided with a plurality of locking holes at intervals. When the length of the push handle assembly needs to be adjusted, the locking member will retract into the locking hole along the guide groove so that the upper push rod can slide relative to the lower push rod. When the push handle assembly needs to be locked, the locking member will extend out of the locking hole along the guide groove so that the upper push rod can be positioned relative to the lower push rod.

[0004] However, there is a certain clearance between the locking member and the guide groove of the current push handle assembly. When the locking member moves in the guide groove, it will shake, resulting in unstable sliding of the locking member during the process of extending or retracting into the locking hole, which easily causes the phenomenon of jitter when adjusting the push handle assembly and affects the adjustment feeling of the user for the push handle assembly. Summary of the Utility Model

[0005] The main purpose of the utility model is to provide a push handle assembly and a baby carriage, aiming to solve the technical problem that there is a certain clearance between the locking member and the guide groove in the existing push handle assembly, resulting in unstable sliding of the locking member during the process of extending or retracting into the locking hole, which easily causes the phenomenon of jitter when adjusting the push handle assembly.

[0006] To achieve the above purpose, the utility model provides a push handle assembly, including:

[0007] A first tube body, which is provided with a plurality of locking holes at intervals along its own length direction;

[0008] A second tube body, which is inserted into the first tube body and can slide relative to the first tube body along the length direction; and

[0009] The locking assembly includes a fixed seat, a locking member, and an unlocking member. The fixed seat is connected to one end of the second tube body extending into the first tube body. The fixed seat is provided with a guiding groove extending perpendicular to the length direction. The locking member is disposed in the guiding groove. The unlocking member is connected to the locking member and can drive the locking member to move to a locking position and an unlocking position. When the locking member is in the locking position, at least a part of the locking member extends out of the guiding groove and is inserted into the locking hole. When the locking member is in the unlocking position, the locking member extends into the guiding groove.

[0010] Wherein, the locking member is configured to have a clearance fit with the guiding groove when in the unlocking position and a tight fit with the guiding groove when in the locking position.

[0011] Specifically, in this embodiment, the locking assembly can be used to realize the sliding of the second tube body relative to the first tube body and the positioning of the second tube body relative to the first tube body. When the locking member in the locking assembly moves to the unlocking position, at this time the locking member will extend into the guiding groove and will not form a clamping connection with the locking hole, and the second tube body can slide relative to the first tube body to realize the length adjustment of the push handle assembly. When the locking member in the locking assembly moves to the locking position, at this time at least a part of the locking member extends out of the guiding groove and is inserted into the locking hole, and the locking member and the locking hole form a clamping connection, and the second tube body can be positioned relative to the first tube body to realize the length fixation of the push handle assembly.

[0012] When the length of the push handle assembly needs to be adjusted, the user can hold the second tube body and apply an upward pulling force or a downward pushing force to the second tube body (when the user applies an upward pulling force to the second tube body, it means that the user needs to lengthen the push handle assembly; when the user applies a downward pushing force to the second tube body, it means that the user needs to shorten the push handle assembly). When the force is transmitted to the position of the locking member, the contact edge between the locking hole and the locking member will apply a pressure to the locking member. As the force applied by the user to pull or push the second tube body becomes larger and larger, the pressure received by the locking member also gradually increases. At this time, the unlocking member is gradually compressed, and the locking member can move from the locking position to the unlocking position in the guiding groove, so that the second tube body can slide relative to the first tube body to realize the length adjustment of the push handle assembly. During the process of the locking member moving from the locking position to the unlocking position in the guiding groove, the fit between the locking member and the guiding groove changes from a tight fit to a clearance fit, so that after the locking member is stressed, it is easier for the locking member to extend into the guiding groove.

[0013] After determining the adjustment length of the push handle assembly, align the locking member with the corresponding locking hole. Since the locking member no longer abuts against the inner wall of the first tube, the unlocking member is no longer pressed at this time, and the unlocking member has a tendency to recover its elastic deformation. Driven by the unlocking member (exemplarily, for example, the unlocking member can elastically drive the locking member), the locking member can move from the unlocking position to the locking position within the guiding groove, so that the second tube can be positioned relative to the first tube to fix the length of the push handle assembly. During the process of the locking member moving from the unlocking position to the locking position within the guiding groove, the fit between the locking member and the guiding groove changes from a clearance fit to a tight fit, which can limit the wobbling of the locking member when it moves within the guiding groove, improve the sliding stability of the locking member within the guiding groove, avoid the phenomenon of jitter when adjusting the push handle assembly, and enhance the user's adjustment experience of the push handle assembly.

[0014] The push handle assembly provided by the present utility model changes the fit state between the locking member and the guiding groove at different positions, which is beneficial to restricting the freedom degree of the locking member during sliding, thereby improving the stability of the locking member during sliding, preventing the locking member from shifting during sliding, and avoiding the situation of jitter caused by the deflection of the locking member when adjusting the push handle assembly. In addition, since the locking member is stably connected within the guiding groove, no noise will be generated when the locking member slides.

[0015] In some embodiments, along the direction from the locking position to the unlocking position, the width of the locking member gradually increases, and the width of the guiding groove gradually increases.

[0016] Specifically, in this embodiment, the locking member and the guiding groove adopt the above structure, which is beneficial to ensuring the stability of the locking member when sliding within the guiding groove and preventing the locking member from wobbling when sliding within the guiding groove.

[0017] In some embodiments, along the direction from the locking position to the unlocking position, the locking member is sequentially provided with a first limiting section, a second limiting section, and a third limiting section. The width of the first limiting section gradually increases from the end far away from the second limiting section to the end close to the second limiting section. The second limiting section extends straight from the end close to the first limiting section to the end close to the third limiting section. The width of the third limiting section gradually increases from the end close to the second limiting section to the end far away from the second limiting section, and the overall width of the locking member gradually increases;

[0018] Along the direction from the locking position to the unlocking position, the guiding groove is sequentially provided with a first guiding section, a second guiding section, and a third guiding section. The width of the first guiding section gradually increases from the end far away from the second guiding section to the end close to the second guiding section. The second guiding section extends straight from the end close to the first guiding section to the end close to the third guiding section. The width of the third guiding section gradually increases from the end close to the second guiding section to the end far away from the second guiding section, and the overall width of the guiding groove gradually increases;

[0019] Wherein, the overall shape of the locking member corresponds to the overall shape of the guiding groove, and the locking member is slidably connected in the guiding groove.

[0020] Specifically, in this embodiment, the locking member and the guiding groove adopt the above structure, which can ensure that the locking member will not be stuck in the guiding groove, thereby facilitating to ensure the sliding flexibility of the locking member in the guiding groove.

[0021] In some embodiments, the average cross-sectional area of the third limiting section is greater than the average cross-sectional area of the second guiding section, the average cross-sectional area of the second limiting section is less than the average cross-sectional area of the second guiding section, and the average cross-sectional area of the second limiting section is greater than the average cross-sectional area of the first guiding section.

[0022] Specifically, in this embodiment, adopting the above structure is beneficial to realizing the tight fit between the locking member and the guiding groove when the locking member moves from the unlocking position to the locking position. At the same time, it is also beneficial to protect the stroke of the locking member and prevent the locking member from sliding out of the locking hole.

[0023] In some embodiments, the fixed seat has an outer side wall, a first sliding groove is formed in the outer side wall, a second sliding groove is formed in the guiding groove, and a connecting hole is formed in the locking member. A first connecting piece is sequentially inserted into the first sliding groove, the connecting hole, and the second sliding groove to connect the locking member and the fixed seat together.

[0024] Specifically, in this embodiment, the push handle assembly has a compact structure and stable connection. By limiting the locking member in the first sliding groove and the second sliding groove through the first connecting piece, when the locking member slides in the guiding groove, it can only slide along the first sliding groove and the second sliding groove, thereby restricting the degree of freedom of the locking member during sliding, improving the stability of the locking member during sliding, preventing the locking member from shifting during sliding, and avoiding the situation of jitter caused by the deflection of the locking member when adjusting the push handle assembly. In addition, because the locking member is stably connected in the guiding groove, the locking member will not generate noise during sliding.

[0025] In some embodiments, the fixed seat includes:

[0026] The first connecting seat is arranged at one end of the second pipe body extending into the first pipe body, and the first sliding groove is formed in the first connecting seat.

[0027] The second connecting seat is provided with the guiding groove, and the second connecting seat and the first connecting seat are connected together by the first connecting piece that sequentially passes through the first sliding groove, the connecting hole and the second sliding groove.

[0028] Specifically, in this embodiment, dividing the fixed seat into the first connecting seat and the second connecting seat connected together is beneficial to separately processing the first connecting seat and the second connecting seat, thereby reducing the processing difficulty of the fixed seat and improving the production efficiency of the fixed seat.

[0029] In some embodiments, the unlocking piece is connected to the locking piece along a direction perpendicular to the direction from the locking position to the unlocking position.

[0030] Specifically, in this embodiment, adopting the above structure is beneficial to reducing the overall occupied space of the locking piece and the unlocking piece, beneficial to reducing the volume of the fixed seat, and making the push handle assembly develop towards miniaturization.

[0031] In some embodiments, a third sliding groove is formed at one end of the second pipe body away from the first pipe body.

[0032] A driving rod is arranged in the second pipe body. One end of the driving rod is connected to the fixed seat, and the other end of the driving rod is connected to the third sliding groove through a second connecting piece.

[0033] Specifically, in this embodiment, the driving rod can be used to pull the fixed seat to move together with the second pipe body, which is beneficial to improving the connection stability of the fixed seat on the second pipe body and preventing the fixed seat from falling off the second pipe body, resulting in damage to the push handle assembly.

[0034] In some embodiments, one end of the locking piece close to the locking hole is set as a spherical head end.

[0035] Alternatively, a guiding portion is provided at one end of the locking piece close to the locking hole, and the width of the guiding portion gradually decreases along the direction from the unlocking position to the locking position.

[0036] Specifically, in this embodiment, adopting the above structure is beneficial to improving the flexibility of the locking piece to retract into the locking hole.

[0037] Correspondingly, the present invention also provides a baby stroller, which includes the push handle assembly described in any one of the above embodiments.

[0038] Specifically, in this embodiment, a baby stroller applying the push handle assembly described in the above embodiment is conducive to achieving smooth adjustment of the push handle assembly, avoiding jitter during the adjustment of the push handle assembly, and reducing the noise generated during the adjustment of the push handle assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative efforts.

[0040] Figure 1 FIG. 9 is a schematic diagram of the overall structure of a push handle assembly provided by an embodiment of the present invention;

[0041] Figure 2 FIG. 13 is a schematic diagram of the internal structure of the second tube body in the push handle assembly provided by an embodiment of the present invention;

[0042] Figure 3 FIG. 17 is a sectional view of the structure of the push handle assembly provided by an embodiment of the present invention;

[0043] Figure 4 FIG. 21 is an exploded sectional view of the internal structure of the second tube body of the push handle assembly provided by an embodiment of the present invention from a first perspective;

[0044] Figure 5 FIG. 25 is an exploded sectional view of the internal structure of the second tube body of the push handle assembly provided by an embodiment of the present invention from a second perspective;

[0045] Figure 6 FIG. 29 is a sectional view of the structure of the locking member of the push handle assembly provided by an embodiment of the present invention in the unlocked position;

[0046] Figure 7 FIG. 33 is a sectional view of the structure of the locking member of the push handle assembly provided by an embodiment of the present invention in the locked position;

[0047] Figure 8 FIG. 37 is a schematic diagram of the overall structure of a baby stroller provided by an embodiment of the present invention.

[0048] Explanation of the reference numerals in the drawings:

[0049] 100 - First tube body;

[0050] 110 - Locking hole;

[0051] 200 - Second tube body;

[0052] 210 - Third chute; 220 - Driving rod;

[0053] 300 - Locking assembly;

[0054] 310 - Fixed seat; 320 - Locking member; 330 - Unlocking member;

[0055] 311 - First connecting seat; 312 - Second connecting seat;

[0056] 321 - Connecting hole; 322 - First limiting section; 323 - Second limiting section; 324 - Third limiting section;

[0057] 3111 - First chute;

[0058] 3121 - Second chute; 3122 - Guide groove; 3123 - Abutting portion;

[0059] 31221 - First guiding section; 31222 - Second guiding section; 31223 - Third guiding section;

[0060] 400 - First connecting piece;

[0061] 500 - Second connecting piece;

[0062] 600 - Adjusting portion.

[0063] The realization, functional features and advantages of the purpose of the present utility model will be further described with reference to the embodiments and the accompanying drawings. Detailed implementation manners

[0064] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0065] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present utility model, the directional indications are only used to explain the relative position relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0066] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present utility model, such descriptions of "first", "second", etc. are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, if "and / or", "or / and", or "and / or" appear throughout the text, their meanings include three parallel scenarios. Taking "A and / or B" as an example, it includes Scenario A, or Scenario B, or the scenario where both A and B are satisfied simultaneously. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0067] A baby stroller is a stroller structure for infants to ride when going out. Most of them are composed of structures such as a frame, wheels, a handlebar, and a seat. Due to the different sizes and heights of baby strollers, in order to adapt to different pushing habits of users for baby strollers, the push handle assembly is often designed as a telescopic structure relative to the frame.

[0068] Currently, the telescopic push handle assembly mainly includes an upper push rod and a lower push rod. The upper push rod is inserted into the lower push rod, and the upper push rod can slide relative to the lower push rod. The upper push rod is provided with a locking member, and the lower push rod is provided with a plurality of locking holes at intervals. When the length of the push handle assembly needs to be adjusted, the locking member will retract into the locking hole along the guiding groove so that the upper push rod can slide relative to the lower push rod. When the push handle assembly needs to be locked, the locking member will extend out of the locking hole along the guiding groove so that the upper push rod can be positioned relative to the lower push rod.

[0069] However, there is a certain clearance between the locking member and the guiding groove of the current push handle assembly. When the locking member moves in the guiding groove, it will shake, making the sliding of the locking member unstable during the process of extending out or retracting into the locking hole, easily resulting in a jitter phenomenon when adjusting the push handle assembly and affecting the user's adjustment experience of the push handle assembly.

[0070] Based on this, with reference to Figures 1 to 7, an embodiment of the present application provides a push handle assembly, which can be applied to a baby stroller, and can also be applied to other stroller structures. The push handle assembly includes a first tube body 100, a second tube body 200, and a locking assembly 300. The first tube body 100 is provided with a plurality of locking holes 110 at intervals along its own length direction. The second tube body 200 is inserted into the first tube body 100 and can slide relative to the first tube body 100 along the length direction. The locking assembly 300 includes a fixed seat 310, a locking member 320, and an unlocking member 330. The fixed seat 310 is connected to one end of the second tube body 200 extending into the first tube body 100. The fixed seat 310 is provided with a guiding groove 3122 extending perpendicular to the length direction. The locking member 320 is arranged in the guiding groove 3122. The unlocking member 330 is connected to the locking member 320 and can drive the locking member 320 to move to a locking position and an unlocking position. When the locking member 320 is in the locking position, at least a part of it extends out of the guiding groove 3122 and is inserted into the locking hole 110. When the locking member 320 is in the unlocking position, it extends into the guiding groove 3122. Among them, the locking member 320 is configured to have a clearance fit with the guiding groove 3122 in the unlocking position and a tight fit with the guiding groove 3122 in the locking position. Exemplarily, for example, the unlocking member 330 can be a spring.

[0071] It should be noted that the clearance fit here means that there is a relatively large connection gap between the locking member 320 and the guiding groove 3122, that is, the width of this section of the guiding groove 3122 is larger than the width of this section of the locking member 320. The tight fit here means that there is a relatively small connection gap between the locking member 320 and the guiding groove 3122, that is, the width of this section of the guiding groove 3122 is approximately equal to the width of this section of the locking member 320.

[0072] Specifically, in this embodiment, the locking assembly 300 can be used to realize the sliding of the second tube body 200 relative to the first tube body 100 and the positioning of the second tube body 200 relative to the first tube body 100. When the locking member 320 in the locking assembly 300 moves to the unlocking position, at this time the locking member 320 will extend into the guiding groove 3122 and will not form a clamping connection with the locking hole 110, and the second tube body 200 can slide relative to the first tube body 100 to realize the length adjustment of the push handle assembly. When the locking member 320 in the locking assembly 300 moves to the locking position, at this time the locking member 320 will at least partially extend out of the guiding groove 3122 and be inserted into the locking hole 110, and the locking member 320 and the locking hole 110 form a clamping connection, and the second tube body 200 can be positioned relative to the first tube body 100 to realize the length fixation of the push handle assembly.

[0073] When the length of the push handle assembly needs to be adjusted, the user can hold the second tube body 200 and apply an upward pulling force or a downward pushing force to the second tube body 200 (when the user applies an upward pulling force to the second tube body 200, it means that the user needs to lengthen the push handle assembly; when the user applies a downward pushing force to the second tube body 200, it means that the user needs to shorten the push handle assembly). When the force is transmitted to the position of the locking member 320, the contact edge between the locking hole 110 and the locking member 320 will apply a pressure to the locking member 320. As the force applied by the user to pull or push the second tube body 200 increases, the pressure received by the locking member 320 also gradually increases. At this time, the unlocking member 330 is gradually compressed, and the locking member 320 can move from the locking position to the unlocking position within the guiding groove 3122, so that the second tube body 200 can slide relative to the first tube body 100 to achieve the length adjustment of the push handle assembly. During the process of the locking member 320 moving from the locking position to the unlocking position within the guiding groove 3122, the tight fit between the locking member 320 and the guiding groove 3122 changes to a clearance fit, so that after the locking member 320 is stressed, the locking member 320 can more easily extend into the guiding groove 3122.

[0074] After determining the adjusted length of the push handle assembly, align the locking member 320 with the corresponding locking hole 110. Since the locking member 320 no longer abuts against the inner wall of the first tube body 100, the unlocking member 330 is no longer stressed at this time, and the unlocking member 330 has a tendency to recover its elastic deformation. Driven by the unlocking member 330 (exemplarily, for example, the unlocking member 330 can elastically drive the locking member 320), the locking member 320 can move from the unlocking position to the locking position within the guiding groove 3122, so that the second tube body 200 can be positioned relative to the first tube body 100 to achieve the length fixation of the push handle assembly. During the process of the locking member 320 moving from the unlocking position to the locking position within the guiding groove 3122, the clearance fit between the locking member 320 and the guiding groove 3122 changes to a tight fit, so as to be able to limit the shaking of the locking member 320 when moving within the guiding groove 3122, improve the sliding stability of the locking member 320 within the guiding groove 3122, avoid the phenomenon of jitter when adjusting the push handle assembly, and enhance the adjustment experience of the user for the push handle assembly.

[0075] The push handle assembly provided in this embodiment is beneficial to restricting the freedom degree of the locking member 320 during sliding by changing the fitting state between the locking member 320 and the guiding groove 3122 at different positions, thereby improving the sliding stability of the locking member 320, preventing the locking member 320 from shifting during sliding, and avoiding the situation of jitter caused by the deflection of the locking member 320 when adjusting the push handle assembly. In addition, since the locking member 320 is stably connected within the guiding groove 3122, no noise will be generated when the locking member 320 slides.

[0076] In some embodiments, referring to Figure 5 , along the direction from the locked position to the unlocked position, the width of the locking member 320 gradually increases, and the width of the guiding groove 3122 gradually increases.

[0077] Specifically, in this embodiment, for the convenience of describing the movement process of the locking member 320 in the guiding groove 3122, it is assumed that the direction from the locked position to the unlocked position is the first direction, and the direction from the unlocked position to the locked position is the reverse direction of the first direction. When the locking member 320 slides in the guiding groove 3122 along the first direction after being stressed, that is, when the locking member 320 gradually retracts into the locking hole 110, since the guiding groove 3122 gradually widens along the first direction, it is convenient for the locking member 320 to slide in the guiding groove 3122 along the first direction (i.e., the "clearance fit" mentioned in the above embodiment), that is, after the locking member 320 is stressed, it is easier to retract into the locking hole 110. When the unlocking member 330 drives the locking member 320 to slide in the guiding groove 3122 along the reverse direction of the first direction, that is, when the locking member 320 gradually extends out of the locking hole 110 under the drive of the unlocking member 330, since the guiding groove 3122 gradually narrows along the reverse direction of the first direction, and the locking member 320 gradually widens along the first direction, as the locking member 320 continuously slides in the guiding groove 3122 along the reverse direction of the first direction, the wider end of the locking member 320 gradually slides to the narrower end of the guiding groove 3122 (i.e., the "tight fit" mentioned in the above embodiment), realizing the clamping of the locking member 320 in the guiding groove 3122, which is beneficial to restricting the shaking of the locking member 320 during the sliding process in the guiding groove 3122, and further reducing the jitter phenomenon generated when adjusting the relative position of the first pipe body 100 and the second pipe body 200, that is, reducing the jitter phenomenon generated when adjusting the length of the push handle assembly, and ensuring the smoothness of the push handle assembly when adjusting the length.

[0078] In some embodiments, referring to Figure 5 , along the direction from the locked position to the unlocked position, the locking member 320 is sequentially provided with a first limiting section 322, a second limiting section 323, and a third limiting section 324. The width of the first limiting section 322 gradually increases from the end far away from the second limiting section 323 to the end close to the second limiting section 323. The second limiting section 323 extends straight from the end close to the first limiting section 322 to the end close to the third limiting section 324. The width of the third limiting section 324 gradually increases from the end close to the second limiting section 323 to the end far away from the second limiting section 323, and the overall width of the locking member 320 gradually increases.

[0079] Similarly, in order to ensure that the width of the guiding groove 3122 is adapted to the width of the locking member 320, along the direction from the locking position to the unlocking position, the guiding groove 3122 is sequentially provided with a first guiding section 31221, a second guiding section 31222, and a third guiding section 31223. The width of the first guiding section 31221 gradually increases from the end far away from the second guiding section 31222 to the end close to the second guiding section 31222. The second guiding section 31222 extends straight from the end close to the first guiding section 31221 to the end close to the third guiding section 31223. The width of the third guiding section 31223 gradually increases from the end close to the second guiding section 31222 to the end far away from the second guiding section 31222, and the overall width of the guiding groove 3122 gradually increases.

[0080] Wherein, the overall shape of the locking member 320 corresponds to the overall shape of the guiding groove 3122, and the locking member 320 is slidably connected in the guiding groove 3122.

[0081] Specifically, in this embodiment, both the first limiting section 322 and the third limiting section 324 are widened sections, the second limiting section 323 is a straight section, and the second limiting section 323 is arranged between the first limiting section 322 and the third limiting section 324, which can play a transitional role in connecting the first limiting section 322 and the third limiting section 324 and ensure that the overall width change of the locking member 320 is not too large. Similarly, both the first guiding section 31221 and the third guiding section 31223 are widened sections, the second guiding section 31222 is a straight section, and the second guiding section 31222 is arranged between the first guiding section 31221 and the third guiding section 31223, which can play a transitional role in connecting the first guiding section 31221 and the third guiding section 31223 and ensure that the overall width change of the guiding groove 3122 is not too large. Since there is a tight fit between the locking member 320 and the guiding groove 3122 in the locking position, adopting the above structure for the locking member 320 and the guiding groove 3122 can ensure that the locking member 320 will not be stuck in the guiding groove 3122, which is beneficial to ensuring the sliding flexibility of the locking member 320 in the guiding groove 3122.

[0082] In some embodiments, referring to Figure 5 , the average cross-sectional area of the third limiting section 324 is larger than the average cross-sectional area of the second guiding section 31222, the average cross-sectional area of the second limiting section 323 is smaller than the average cross-sectional area of the second guiding section 31222, and the average cross-sectional area of the second limiting section 323 is larger than the average cross-sectional area of the first guiding section 31221.

[0083] Specifically, in this embodiment, with the above structure, when the locking member 320 moves from the unlocking position to the locking position, it is beneficial to achieve a tight fit between the locking member 320 and the guiding groove 3122, preventing the locking member 320 from wobbling within the guiding groove 3122.

[0084] In some embodiments, referring to Figures 2 to 7 , the fixed seat 310 has an outer sidewall, and a first sliding groove 3111 is formed in the outer sidewall. A second sliding groove 3121 is formed in the guiding groove 3122. A connecting hole 321 is formed in the locking member 320. A first connecting member 400 is sequentially inserted into the first sliding groove 3111, the connecting hole 321, and the second sliding groove 3121 to connect the locking member 320 and the fixed seat 310 together. Exemplarily, for example, the first connecting member 400 may be a pin.

[0085] Specifically, in this embodiment, during the process of the locking member 320 moving from the locking position to the unlocking position within the guiding groove 3122, or during the process of the locking member 320 moving from the unlocking position to the locking position within the guiding groove 3122, the first connecting member 400 slides within the first sliding groove 3111 and the second sliding groove 3121. Since the first connecting member 400 is also connected to the locking member 320, under the limiting action of the first connecting member 400, while the locking member 320 slides within the guiding groove 3122, it is restricted from sliding along the first sliding groove 3111 and the second sliding groove 3121. This is beneficial to improving the stability of the locking member 320 during sliding, preventing the locking member 320 from shifting during sliding, improving the alignment accuracy between the locking member 320 and the locking hole 110, avoiding the phenomenon of jitter when adjusting the push handle assembly, and enhancing the user experience.

[0086] The push handle assembly provided in this embodiment has a compact structure and stable connection. By limiting the locking member 320 within the first sliding groove 3111 and the second sliding groove 3121 through the first connecting member 400, when the locking member 320 slides within the guiding groove 3122, it can only slide along the first sliding groove 3111 and the second sliding groove 3121. Thus, the degree of freedom of the locking member 320 during sliding is restricted, improving the stability of the locking member 320 during sliding, preventing the locking member 320 from shifting during sliding, and avoiding the situation of jitter caused by the deflection of the locking member 320 when adjusting the push handle assembly. In addition, since the locking member 320 is stably connected within the guiding groove 3122, the locking member 320 does not generate noise during sliding.

[0087] In some embodiments, referring to Figures 2 to 7, the fixed seat 310 includes a first connection seat 311 and a second connection seat 312. The first connection seat 311 is disposed at one end of the second tube body 200 extending into the first tube body 100. The first connection seat 311 is provided with a first sliding groove 3111. The second connection seat 312 is provided with a guiding groove 3122. The second connection seat 312 and the first connection seat 311 are connected together by a first connecting member 400 that sequentially passes through the first sliding groove 3111, the connection hole 321, and the second sliding groove 3121. Among them, the second connection seat 312 is a structure made of plastic material.

[0088] Specifically, in this embodiment, dividing the fixed seat 310 into the connected first connection seat 311 and second connection seat 312 is beneficial to separately process the first connection seat 311 and the second connection seat 312, thereby reducing the processing difficulty of the fixed seat 310 and improving the production efficiency of the fixed seat 310. Moreover, through the first connecting member 400 passing through the first sliding groove 3111, the connection hole 321, and the second sliding groove 3121, the first connection seat 311 and the second connection seat 312 can be connected together. Its connection method is simple and is easy for the assembly and disassembly of the fixed seat 310.

[0089] Furthermore, in order to ensure the stability when the second tube body 200 slides relative to the first tube body 100 and prevent the second tube body 200 from wobbling between the first tube body 100 during sliding, the second connection seat 312 can abut against the inner wall of the first tube body 100. In this way, when the second tube body 200 slides, there is always contact between the second connection seat 312 and the first tube body 100, thereby ensuring the connection stability between the second tube body 200 and the first tube body 100, preventing the second tube body 200 from wobbling within the first tube body 100, and avoiding direct contact between the tube walls of the second tube body 200 and the first tube body 100 to generate noise when the second tube body 200 slides.

[0090] More preferably, the second connection seat 312 is made of plastic material. With such a structure, the second connection seat 312 has little wear on the inner wall of the first tube body 100, which is beneficial to ensuring the structural stability of the first tube body 100. Also, since the plastic material is wear-resistant, it is beneficial to extend the service life of the second connection seat 312. In addition, the plastic second connection seat 312 is beneficial to increasing the friction between the second tube body 200 and the first tube body 100, avoiding the second tube body 200 sliding too flexibly relative to the first tube body 100 and being unfavorable for positioning the second tube body 200, and ensuring the smoothness when the second tube body 200 slides.

[0091] In some embodiments, referring to Figures 2 to 7 , the unlocking member 330 is connected to the locking member 320 along a direction perpendicular to the direction from the locking position to the unlocking position.

[0092] Specifically, in this embodiment, it is assumed that the direction from the locked position to the unlocked position is the first direction, and the direction perpendicular to the direction from the locked position to the unlocked position is the second direction. Then, the direction from the unlocked position to the locked position is the reverse direction of the first direction. The locking member 320 slides in the guiding groove 3122 along the first direction or the reverse direction of the first direction. If the unlocking member 330 is arranged along the first direction on the fixed seat 310, then the unlocking member 330 is equivalent to being arranged in the same direction as the locking member 320. This will result in a relatively large overall occupied space of the locking member 320 and the unlocking member 330 in the first direction, which is not conducive to reducing the volume of the fixed seat 310. By arranging the unlocking member 330 on the fixed seat 310 along the second direction perpendicular to the first direction, the unlocking member 330 is equivalent to being perpendicularly arranged to the locking member 320. In this way, while the unlocking member 330 can drive the locking member 320 to slide in the guiding groove 3122 by using its component force, it is also conducive to reducing the overall occupied space of the locking member 320 and the unlocking member 330 in the first direction, which is beneficial to reducing the volume of the fixed seat 310 and enabling the push handle assembly to develop towards miniaturization.

[0093] In some embodiments, referring to Figures 2 to 7 , an abutting portion 3123 is provided at one end of the fixed seat 310 away from the second tube body 200, and the abutting portion 3123 contacts the inner wall of the first tube body 100. Exemplarily, for example, the abutting portion 3123 can be a structure made of silica gel material.

[0094] Specifically, in this embodiment, in order to save consumables and reduce the volume of the fixed seat 310, the fixed seat 310 does not need to integrally contact the inner wall of the first tube body 100. The fixed seat 310 only needs to extend outwards to be provided with the abutting portion 3123, and the abutting portion 3123 is used to contact the inner wall of the first tube body 100. When the second tube body 200 slides relative to the first tube body 100, the abutting portion 3123 always abuts against the inner wall of the first tube body 100, so as to ensure that the second tube body 200 can keep in contact with the first tube body 100 during sliding, prevent the second tube body 200 from wobbling relative to the first tube body 100 during sliding, and improve the smoothness of the second tube body 200 when sliding in the first tube body 100.

[0095] In some embodiments, referring to Figure 3 , a third sliding groove 210 is formed at one end of the second tube body 200 away from the first tube body 100. A driving rod 220 is arranged in the second tube body 200. One end of the driving rod 220 is connected to the fixed seat 310, and the other end of the driving rod 220 is connected to the third sliding groove 210 through a second connecting member 500 (exemplarily, for example, the second connecting member 500 can be a pin).

[0096] Specifically, in this embodiment, since the fixed seat 310 contacts the inner wall of the first tube body 100, there is a large frictional force between the fixed seat 310 and the inner wall of the first tube body 100. The fixed seat 310 is connected to the second tube body 200 through the driving rod 220. When the second tube body 200 slides, the driving rod 220 drives the fixed seat 310 to slide together with the second tube body 200. With such a structure, it is beneficial to improve the connection stability of the fixed seat 310 on the second tube body 200 and prevent the fixed seat 310 from falling off the second tube body 200, causing damage to the push handle assembly.

[0097] Further, one end of the driving rod 220 away from the fixed seat 310 is connected to the third sliding groove 210 of the second tube body 200 through the second connecting member 500. When the user pulls or pushes the second tube body 200, first, the driving rod 220 can slide in the third sliding groove 210, thereby consuming a part of the force. With such a structure, the driving rod 220 can provide a certain buffering effect for the fixed seat 310, and can avoid the sliding speed of the fixed seat 310 in the first tube body 100 being too fast when the initial force of the user pulling or pushing the second tube body 200 is too large, and missing the best positioning position of the second tube body 200 relative to the first tube body 100, thereby being beneficial to improving the positioning accuracy between the second tube body 200 and the first tube body 100.

[0098] In some embodiments, referring to Figures 1 to 7 , an adjusting portion 600 is provided at one end of the second tube body 200 away from the first tube body 100.

[0099] Specifically, in this embodiment, when the user needs to adjust the length of the push handle assembly, the adjusting portion 600 can be held by hand for adjustment, which is beneficial for the user to firmly hold the second tube body 200. More preferably, the adjusting portion 600 can be provided with friction patterns, and the friction patterns play an anti-slip role to facilitate the user to better hold the second tube body 200.

[0100] In some embodiments, one end of the locking member 320 close to the locking hole 110 is set as a ball head end.

[0101] Specifically, in this embodiment, one end of the locking member 320 close to the locking hole 110 is set as a ball head end. When the user pulls or pushes the second tube body 200, so that the contact edge between the locking hole 110 and the locking member 320 applies pressure to the ball head end of the locking member 320, since the surface of the ball head end is a smooth arc surface, the frictional force between the ball head end and the contact edge of the locking hole 110 is small. When the ball head end is stressed, the locking member 320 can relatively easily retract into the locking hole 110 along the first direction, so as to facilitate the sliding of the second tube body 200 relative to the first tube body 100.

[0102] In some embodiments, a guiding portion is provided at one end of the locking member 320 close to the locking hole 110, and the width of the guiding portion gradually decreases along the direction from the unlocking position to the locking position.

[0103] Specifically, in this embodiment, assuming that the direction from the locking position to the unlocking position is the first direction, then the direction from the unlocking position to the locking position is the reverse direction of the first direction. A guiding portion is provided at one end of the locking member 320 close to the locking hole 110, and the guiding portion gradually narrows along the reverse direction of the first direction, so that the locking member 320 contacts the edge of the locking hole 110 in the form of an inclined surface. When the user pulls or pushes the second tube body 200, such that the contact edge between the locking hole 110 and the locking member 320 applies pressure to the inclined surface of the locking member 320, a component force along the first direction will be formed on the inclined surface of the locking member 320, thereby driving the locking member 320 to retract into the locking hole 110 along the first direction, so as to facilitate the sliding of the second tube body 200 relative to the first tube body 100.

[0104] Correspondingly, another embodiment of the present application further provides a baby stroller, referring to Figure 8 , the baby stroller includes the push handle assembly in any of the above embodiments.

[0105] Specifically, in this embodiment, for the baby stroller applying the above push handle assembly, it is beneficial to achieve smooth adjustment of the push handle assembly, avoid the phenomenon of jitter when adjusting the push handle assembly, and reduce the noise generated when adjusting the push handle assembly.

[0106] Benefiting from the improvement of the above push handle assembly, the baby stroller in this embodiment has the same technical effects as the above push handle assembly, which will not be elaborated here.

[0107] It should be noted that other contents of the push handle assembly and the baby stroller disclosed in the present application can be referred to the prior art, which will not be elaborated here.

[0108] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. All equivalent structural transformations made under the inventive concept of the present invention by using the content of the specification and drawings of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. Push handle assembly, characterized in that, Comprising: A first tube body, which is provided with a plurality of locking holes at intervals along its own length direction; A second tube body, which is inserted into the first tube body and can slide relative to the first tube body along the length direction; And A locking assembly, including a fixed seat, a locking member and an unlocking member. The fixed seat is connected to one end of the second tube body extending into the first tube body. The fixed seat is provided with a guiding groove extending perpendicular to the length direction. The locking member is arranged in the guiding groove. The unlocking member is connected to the locking member and can drive the locking member to move to a locking position and an unlocking position. When the locking member is in the locking position, at least part of it extends out of the guiding groove and is inserted into the locking hole. When the locking member is in the unlocking position, it extends into the guiding groove; Wherein, the locking member is configured to have a clearance fit with the guiding groove when in the unlocking position and a tight fit with the guiding groove when in the locking position.

2. The push handle assembly according to claim 1, wherein, Along the direction from the locking position to the unlocking position, the width of the locking member gradually increases, and the width of the guiding groove gradually increases.

3. The push handle assembly according to claim 1, characterized in that, Along the direction from the locking position to the unlocking position, the locking member is sequentially provided with a first limiting section, a second limiting section and a third limiting section. The width of the first limiting section gradually increases from the end far away from the second limiting section to the end close to the second limiting section. The second limiting section extends straight from the end close to the first limiting section to the end close to the third limiting section. The width of the third limiting section gradually increases from the end close to the second limiting section to the end far away from the second limiting section, and the overall width of the locking member gradually increases; Along the direction from the locking position to the unlocking position, the guiding groove is sequentially provided with a first guiding section, a second guiding section and a third guiding section. The width of the first guiding section gradually increases from the end far away from the second guiding section to the end close to the second guiding section. The second guiding section extends straight from the end close to the first guiding section to the end close to the third guiding section. The width of the third guiding section gradually increases from the end close to the second guiding section to the end far away from the second guiding section, and the overall width of the guiding groove gradually increases; Wherein, the overall shape of the locking member corresponds to the overall shape of the guiding groove, and the locking member is slidably connected in the guiding groove.

4. The push handle assembly according to claim 3, wherein, The average cross-sectional area of the third limiting section is larger than the average cross-sectional area of the second guiding section. The average cross-sectional area of the second limiting section is smaller than the average cross-sectional area of the second guiding section, and the average cross-sectional area of the second limiting section is larger than the average cross-sectional area of the first guiding section.

5. The push handle assembly according to claim 1, wherein The fixed seat has an outer side wall, the outer side wall is provided with a first sliding groove, the guiding groove is provided with a second sliding groove, and the locking member is provided with a connecting hole. A first connecting piece is sequentially inserted through the first sliding groove, the connecting hole and the second sliding groove to connect the locking member and the fixed seat together.

6. The push handle assembly according to claim 5, characterized in that, The fixed seat includes: The first connecting seat is arranged at one end of the second pipe body extending into the first pipe body, and the first sliding groove is formed in the first connecting seat; The second connecting seat is provided with the guiding groove, and the second connecting seat and the first connecting seat are connected together by the first connecting member that sequentially passes through the first sliding groove, the connecting hole and the second sliding groove.

7. The push handle assembly according to claim 1, wherein, The unlocking member is connected to the locking member along a direction perpendicular to the direction from the locking position to the unlocking position.

8. The push handle assembly according to claim 1, wherein A third sliding groove is formed at one end of the second pipe body away from the first pipe body; A driving rod is arranged in the second pipe body. One end of the driving rod is connected to the fixed seat, and the other end of the driving rod is connected to the third sliding groove through a second connecting member.

9. The push handle assembly according to any one of claims 1 to 8, characterized in that, One end of the locking member close to the locking hole is provided with a spherical end portion; Alternatively, one end of the locking member close to the locking hole is provided with a guiding portion, and the width of the guiding portion gradually decreases along the direction from the unlocking position to the locking position.

10. A baby stroller, characterized in that, Comprising the push handle assembly according to any one of claims 1 to 9.

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