A pet stroller folding linkage mechanism

Abstract

This utility model discloses a pet stroller folding linkage mechanism, including a handle tube, front leg tubes, and rear leg tubes. The handle tube, front leg tubes, and rear leg tubes are connected by a joint assembly to achieve mutual rotation and folding. The mechanism further includes a seat frame and a connecting rod. The seat frame is hinged to the front leg tubes, and the connecting rod is hinged to both the seat frame and the handle tube. A sliding sleeve is provided on the rear leg tube, and the seat frame is fixedly connected to the sliding sleeve. When the seat frame rotates to fold, the sliding sleeve can slide along the rear leg tube. When the joint assembly is unlocked, the handle tube rotates clockwise to fold. Simultaneously, the rotation of the handle tube drives the seat frame to rotate and fold via the connecting rod. The seat frame, through the sliding sleeve, moves along the rear leg tube, simultaneously driving the rear leg tube to rotate and fold. This achieves coordinated folding of the handle tube, seat frame, and rear leg tubes, facilitating user operation, meeting higher user needs, and enhancing product competitiveness.

Description

Technical Field

[0001] This utility model relates to a pet stroller, and more particularly to a pet stroller folding linkage mechanism. Background Technology

[0002] One-button folding structure is used in many baby strollers or pet strollers. The one-button unlocking component set on the handlebar tube is connected to the joint structure between the handlebar tube, front leg tube and rear leg tube by steel cable, so as to realize the folding of the seat frame, handlebar tube, front leg tube and rear leg tube.

[0003] However, after the baby stroller or pet stroller with the above structure is unlocked by the one-button unlocking component, the rotation of the handle tube cannot simultaneously drive the seat frame and the rear leg tube to rotate and fold, thus achieving linkage. This results in a lack of convenience in operation. Therefore, the applicant has designed a pet stroller folding linkage mechanism to solve the above problems. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, this utility model provides a pet stroller folding linkage mechanism.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A pet stroller folding linkage mechanism includes a handle tube, front leg tubes, and rear leg tubes. The handle tube, front leg tubes, and rear leg tubes are connected by a joint assembly to achieve mutual rotation for folding and unfolding. The mechanism further includes a seat frame and a connecting rod. The seat frame is hinged to the front leg tubes, and the connecting rod is hinged to both the seat frame and the handle tube. A sliding sleeve is provided on the rear leg tubes, and the seat frame is fixedly connected to the sliding sleeve. When the seat frame rotates, the sliding sleeve can slide along the rear leg tubes, thereby realizing the folding and unfolding of the stroller.

[0007] The seat frame is provided with a connecting pipe, and the sliding sleeve is provided with a sleeve, the end of the connecting pipe being inserted into the sleeve.

[0008] The joint assembly includes three joint housings arranged in sequence: joint housing 1, joint housing 2, and joint housing 3. Joint housing 3 is connected to the rear leg tube, joint housing 2 is connected to the handle tube, joint housing 1 is connected to the front leg tube, and joint housing 3 is rotatably connected to joint housing 2. A plug-in locking structure is provided between joint housing 3, joint housing 2, and joint housing 1. Joint housing 3 can rotate or lock relative to joint housing 2 and joint housing 1 through the plug-in locking structure. A sliding tooth locking structure is provided between joint housing 2 and joint housing 1. Joint housing 2 and joint housing 1 can rotate or lock each other through the sliding tooth locking structure.

[0009] The plug-in locking structure includes a locking rod disposed on the joint housing three, a locking groove disposed on the joint housing one, and a locking hole disposed on the joint housing two. The locking rod is located in the locking groove and the locking hole, and when locked, the tail end of the locking groove overlaps with the end end of the locking hole, and the locking rod is located in the tail end and the end end.

[0010] The sliding tooth locking structure includes a locking member, an unlocking member, a toothed groove 1 disposed in a joint housing 1, and a toothed groove 2 disposed in a joint housing 2. The locking member is disposed in the toothed groove 2 and has protruding teeth that can engage with the toothed groove 1 and the toothed groove 2. A spring is provided between the locking member and the joint housing 2 to push the locking member to move while engaging with the toothed groove 1 and the toothed groove 2. A rotation lifting structure is provided between the unlocking member and the locking member. When the unlocking member is pulled, it can squeeze the locking member to move through the rotation lifting structure, so that the locking member is completely embedded in the toothed groove 2 and disengaged from the toothed groove 1, thereby realizing the mutual rotation of the joint housing 1 and the joint housing 2.

[0011] The second tooth groove is provided with a rotating shaft, the first tooth groove is provided with a shaft hole, the locking member is provided with a sliding cylinder, the sliding cylinder is provided with a sliding hole that slides with the rotating shaft, and the unlocking member is provided with an inner hole that rotates with the sliding cylinder.

[0012] The rotating lifting structure includes a guide block disposed on the locking member and a guide groove disposed on the unlocking member. The guide block is provided with a first guide slope, and the guide groove is provided with a second guide slope that can be pressed against the guide slope.

[0013] The bottom of the groove of the second tooth protrudes outward to form a shaft tube, the spring is set in the tube hole of the shaft tube, and the joint housing three is provided with a tube hole that rotatably cooperates with the shaft tube.

[0014] Both the lock groove and the lock hole are elongated arc-shaped holes.

[0015] The guide block is an arc-shaped plate and includes a vertical surface, and the guide inclined surface intersects the vertical surface at an acute angle.

[0016] The beneficial effects of this utility model are as follows: After the joint assembly of this utility model is unlocked, the handle tube will rotate clockwise and fold. While the handle tube is rotating, it will drive the seat frame to rotate and fold through the connecting rod. At the same time, the seat frame moves along the rear leg tube through the sliding sleeve and drives the rear leg tube to rotate and fold. This realizes the linkage folding of the handle tube, the seat frame, and the rear leg tube, which facilitates the user's operation, meets the user's higher needs, and improves the competitiveness of the product. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a view of a pet stroller with a basket;

[0019] Figure 2 This is a view of a pet stroller without a carrying basket;

[0020] Figure 3 This is an exploded view of the joint assembly;

[0021] Figure 4 This is an exploded view of joint shell two;

[0022] Figure 5 This is an exploded view of the joint assembly from another direction;

[0023] Figure 6 This is a structural view of the unlocking component;

[0024] Figure 7 This is an exploded view of the joint assembly from another direction;

[0025] Figure 8 This is the view in its collapsed state. Detailed Implementation

[0026] The advantages and features of this disclosure, as well as its implementation methods, will be illustrated by the following embodiments described with reference to the accompanying drawings. However, this disclosure may be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be comprehensive and complete, and will fully convey the scope of this disclosure to those skilled in the art. Furthermore, this disclosure is limited only by the scope of the claims.

[0027] The shapes, dimensions, scales, angles, and numbers disclosed in the accompanying drawings used to describe embodiments of this disclosure are merely examples, and therefore this disclosure is not limited to the details shown. Throughout this specification, the same reference numerals refer to the same elements. In the following description, detailed descriptions of relevant known functions or configurations will be omitted where it is determined that such detailed descriptions would unnecessarily obscure the focus of this disclosure. Where the terms “comprising,” “having,” and “including” are used in this specification, additional components may be added unless “only” is used. Unless otherwise indicated, singular terms may include plural forms.

[0028] When interpreting components, even if not explicitly described, the components are understood to include a range of tolerances.

[0029] When describing positional relationships, such as "on," "above," "below," and "adjacent to," one or more parts may be arranged between two other parts unless "immediately following" or "directly" is used.

[0030] When describing temporal relationships, such as when time sequence is described as “after,” “following,” “next,” and “before,” discontinuous cases may be included unless “exactly” or “directly” is used.

[0031] It should be understood that although the terms “first,” “second,” etc., may be used herein to describe various elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from other elements. For example, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element, without departing from the scope of this disclosure.

[0032] As will be fully understood by those skilled in the art, the features of the different embodiments of this disclosure may be coupled or combined with each other in part or in whole, and may cooperate with each other and be technically driven in various ways. The embodiments of this disclosure may be implemented independently of each other, or may be implemented together in an interdependent relationship.

[0033] Reference Figures 1 to 8 This utility model discloses a folding linkage mechanism for a pet stroller, including a handle tube 1, a front leg tube 2, and a rear leg tube 3. The handle tube 1, front leg tube 2, and rear leg tube 3 are connected by a joint assembly 4 to achieve mutual rotation and folding. The connection structure between the handle tube 1, front leg tube 2, and rear leg tube 3 and the joint assembly 4 is a conventional plug-in and screw-fixed method, and therefore will not be described in detail.

[0034] As shown in the figure, it also includes a seat frame 5 and a connecting rod 6. The seat frame 5 is hinged to the front leg tube 2, and the connecting rod 6 is hinged to both the seat frame 5 and the handle tube 1. The rear leg tube 3 is provided with a sliding sleeve 7, and the seat frame 5 is fixedly connected to the sliding sleeve 7. When the one-button unlocking component 8 on the handle tube 1 unlocks the joint component 4 through the steel cable, the handle tube 1 rotates clockwise downwards by gravity. At the same time as the handle tube 1 rotates, it will drive the seat frame 5 to rotate counterclockwise and fold through the connecting rod 6. The seat frame 5 rotates around its hinge point with the front leg tube 2, and the seat frame 5 moves along the rear leg tube 3 through the sliding sleeve 7 while driving the rear leg tube 3 to rotate clockwise and fold. This realizes the linkage folding of the handle tube 1, the seat frame 5, and the rear leg tube 3, which facilitates the user's operation.

[0035] As shown in the figure, the seat frame 5 is provided with a connecting tube 9, and the sliding sleeve 7 is provided with a sleeve 10. The end of the connecting tube 9 is inserted into the sleeve 10. The seat frame 5 of this application is a square frame made of iron pipe. The connecting tube 9 is fixedly connected to the seat frame 5 through the seat tube swivel 11, which not only improves the strength of the seat frame 5, but also allows both ends of the sliding sleeve 7 to be inserted into the sleeve 10 and fixed with screws, which is convenient for manufacturing and assembly. The sleeve 10 can preferably be made of plastic, which has low friction. Of course, in order to prevent it from unfolding after being folded, an elastic locking plate 12 is fixed on the sliding sleeve 7, and a T-shaped washer 13 is fixed with screws on the front leg tube 2. After folding, the T-shaped washer 13 can be locked in the locking hole on the elastic locking plate 12, thereby maintaining the folded state.

[0036] like Figures 3 to 5 As shown, the joint assembly 4 includes joint housing 1 401, joint housing 2 402, and joint housing 3 403 arranged sequentially. Joint housing 1 401, joint housing 2 402, and joint housing 3 403 are locked together by screws and cannot be separated, but can rotate relative to each other. This structure is a common method and therefore will not be described in detail. Joint housing 3 403 is connected to the rear leg tube 3, joint housing 2 402 is connected to the handle tube 1, joint housing 1 401 is connected to the front leg tube 2, and joint housing 3 403 is connected to the joint... The second housing 402 is rotatably connected, and the third joint housing 403 is provided with a plug-in locking structure between the second joint housing 402 and the first joint housing 401. The third joint housing 403 can rotate or lock relative to the second joint housing 402 and the first joint housing 401 through the plug-in locking structure. The second joint housing 402 and the first joint housing 401 are provided with a sliding tooth locking structure. The second joint housing 402 and the first joint housing 401 can rotate or lock each other through the sliding tooth locking structure.

[0037] Specifically, the sliding tooth locking structure includes a locking member 404, an unlocking member 405, a toothed groove 406 disposed in the first joint housing 401, and a toothed groove 407 disposed in the second joint housing 402. The locking member 404 is disposed in the second toothed groove 407 and has protruding teeth 408 that can engage with the first toothed groove 406 and the second toothed groove 407. A spring (in the figure) is provided between the locking member 404 and the second joint housing 402, which can push the locking member 404 to move while engaging with the first toothed groove 406 and the second toothed groove 407. (Not shown) A rotating lifting structure is provided between the unlocking member 405 and the locking member 404. When the unlocking member 405 is pulled, it can squeeze the locking member 404 through the rotating lifting structure to move, so that the locking member 404 is completely embedded in the second tooth groove 407 and disengaged from the first tooth groove 406, thereby realizing the mutual rotation of the first joint housing 401 and the second joint housing 402. In the above, the depth of the first tooth groove 406 is smaller than the thickness of the locking member 404, while the depth of the second tooth groove 407 is larger than or equal to the thickness of the locking member 404.

[0038] The bottom of the groove of the second tooth 407 protrudes outward to form a shaft tube 409. The spring is disposed in the tube hole 410 of the shaft tube 409. The joint housing 403 is provided with a tube hole 410 that rotatably engages with the shaft tube 409. The shaft tube 409 and the second tooth 407 are integrally formed, which facilitates manufacturing and assembly.

[0039] The above structure works as follows: When the trolley is in the unfolded state, the locking member 404 is pushed by the spring and abuts against the bottom of the groove of the first tooth 406, and is located in both the first tooth 406 and the second tooth 407. The locking member 404 is provided with a receiving groove 415, and the unlocking member 405 is located in the receiving groove 415. When the unlocking member 405 is pulled by the steel rope and rotates, one side of the unlocking member 405 abuts against the bottom of the groove of the first tooth 406, and the other side of the unlocking member 405 is pushed by the rotating lifting structure to move the locking member 404, so that the locking member 404 is completely embedded in the second tooth 407 and disengaged from the first tooth 406. The joint housing 1 401 and the joint housing 2 402 are in a state that can rotate relative to each other, thereby realizing the clockwise rotation and folding of the rear leg tube 3 relative to the front leg tube 2.

[0040] As shown in the figure, a rotating shaft 411 is provided in the second tooth groove 407, a shaft hole 412 is provided in the first tooth groove 406, a sliding cylinder 413 is provided on the locking member 404, a sliding hole is provided in the sliding cylinder 413 to slide and engage with the rotating shaft 411, an inner hole 414 is provided on the unlocking member 405 to rotate and engage with the sliding cylinder 413, and a receiving groove 415 is arranged around the sliding cylinder 413. The above structure facilitates assembly and manufacturing, and achieves a compact structural arrangement of the locking member 404 and the unlocking member 405.

[0041] As shown in the figure, the rotating lifting structure includes a guide block 416 disposed on the locking member 404 and a guide groove 417 disposed on the unlocking member 405. The guide block 416 is provided with a first guide slope 418, and the guide groove 417 is provided with a second guide slope 419 that can be pressed against the first guide slope 418. The guide block 416 is an arc-shaped plate and includes a vertical surface. The first guide slope 418 intersects the vertical surface at an acute angle. Of course, the shape of the guide groove 417 corresponds to the shape of the guide block 416. When the guide block 416 rotates, the guide block 416 will move along the first guide slope 418, thereby realizing rotation and lifting. Because the unlocking member 405 is abutting against the bottom of the groove 406 and cannot move, only the guide block 416 can move, thereby realizing the movement of the locking member 404.

[0042] As shown in the figure, the plug-in locking structure includes a locking rod 420 disposed on the joint housing 3 403, a locking groove 421 disposed on the joint housing 1 401, and a locking hole 422 disposed on the joint housing 2 402. The locking rod 420 passes through the locking hole 422 and the end of the locking rod 420 is located in the locking groove 421. Both the locking groove 421 and the locking hole 422 are arc-shaped, and when locked, the tail of the locking groove 421 overlaps with the end of the locking hole 422, and the locking rod 420 is located in the... In the tail and end portions, the locking rod 420 is located in the overlapping area of ​​the locking groove 421 and the locking hole 422. Therefore, one side of the locking rod 420 can abut against the groove wall of the tail portion, and the other side of the locking rod 420 can abut against the groove wall of the end portion, so the locking rod 420 cannot move. When the joint housing 2 402 rotates relative to the joint housing 1 401, the overlapping area of ​​the locking groove 421 and the locking hole 422 increases, so the locking rod 420 can also rotate in the overlapping area, realizing the rotation and folding of the rear leg tube 3.

[0043] The above provides a detailed description of a pet stroller folding linkage mechanism provided by the embodiments of this utility model. Specific examples have been used to illustrate the principle and implementation of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A pet stroller folding linkage mechanism, comprising a handle tube, front leg tubes, and rear leg tubes, wherein the handle tube, front leg tubes, and rear leg tubes are connected by joint components to achieve mutual rotation for folding and unfolding, characterized in that: It also includes a seat frame and a connecting rod. The seat frame is hinged to the front leg tube, and the connecting rod is hinged to both the seat frame and the handle tube. A sliding sleeve is provided on the rear leg tube. The seat frame is fixedly connected to the sliding sleeve. When the seat frame rotates, the sliding sleeve can slide along the rear leg tube, thereby realizing the folding and unfolding of the trolley.

2. The pet stroller folding linkage mechanism according to claim 1, characterized in that: The seat frame is provided with a connecting pipe, and the sliding sleeve is provided with a sleeve, the end of the connecting pipe being inserted into the sleeve.

3. The pet stroller folding linkage mechanism according to claim 1, characterized in that: The joint assembly includes three joint housings arranged in sequence: joint housing 1, joint housing 2, and joint housing 3. Joint housing 3 is connected to the rear leg tube, joint housing 2 is connected to the handle tube, joint housing 1 is connected to the front leg tube, and joint housing 3 is rotatably connected to joint housing 2. A plug-in locking structure is provided between joint housing 3, joint housing 2, and joint housing 1. Joint housing 3 can rotate or lock relative to joint housing 2 and joint housing 1 through the plug-in locking structure. A sliding tooth locking structure is provided between joint housing 2 and joint housing 1. Joint housing 2 and joint housing 1 can rotate or lock each other through the sliding tooth locking structure.

4. The pet stroller folding linkage mechanism according to claim 3, characterized in that: The plug-in locking structure includes a locking rod disposed on the joint housing three, a locking groove disposed on the joint housing one, and a locking hole disposed on the joint housing two. The locking rod is located in the locking groove and the locking hole, and when locked, the tail end of the locking groove overlaps with the end end of the locking hole, and the locking rod is located in the tail end and the end end.

5. The pet stroller folding linkage mechanism according to claim 3, characterized in that: The sliding tooth locking structure includes a locking member, an unlocking member, a toothed groove 1 disposed in a joint housing 1, and a toothed groove 2 disposed in a joint housing 2. The locking member is disposed in the toothed groove 2 and has protruding teeth that can engage with the toothed groove 1 and the toothed groove 2. A spring is provided between the locking member and the joint housing 2 to push the locking member to move while engaging with the toothed groove 1 and the toothed groove 2. A rotation lifting structure is provided between the unlocking member and the locking member. When the unlocking member is pulled, it can squeeze the locking member to move through the rotation lifting structure, so that the locking member is completely embedded in the toothed groove 2 and disengaged from the toothed groove 1, thereby realizing the mutual rotation of the joint housing 1 and the joint housing 2.

6. The pet stroller folding linkage mechanism according to claim 5, characterized in that: The second tooth groove is provided with a rotating shaft, the first tooth groove is provided with a shaft hole, the locking member is provided with a sliding cylinder, the sliding cylinder is provided with a sliding hole that slides with the rotating shaft, and the unlocking member is provided with an inner hole that rotates with the sliding cylinder.

7. The pet stroller folding linkage mechanism according to claim 5, characterized in that: The rotating lifting structure includes a guide block disposed on the locking member and a guide groove disposed on the unlocking member. The guide block is provided with a first guide slope, and the guide groove is provided with a second guide slope that can be pressed against the guide slope.

8. The pet stroller folding linkage mechanism according to claim 5, characterized in that: The bottom of the groove of the second tooth protrudes outward to form a shaft tube, the spring is set in the tube hole of the shaft tube, and the joint housing three is provided with a tube hole that rotatably cooperates with the shaft tube.

9. The pet stroller folding linkage mechanism according to claim 4, characterized in that: Both the lock groove and the lock hole are elongated arc-shaped holes.

10. The pet stroller folding linkage mechanism according to claim 7, characterized in that: The guide block is an arc-shaped plate and includes a vertical surface, and the guide inclined surface intersects the vertical surface at an acute angle.

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