Rear shaft supporting wheel carrier assembling structure

Abstract

The utility model relates to a rear axle supporting wheel carrier assembling structure, two clamping plates are fixed at the rear end part of a frame at intervals or the two clamping plates are detachably arranged at the rear end part of the frame through a connected bottom plate, no matter which mounting structure is adopted, the matching relationship of a supporting wheel carrier and the clamping plates is upper part connection and lower part connection, and no matter which mounting structure is adopted, the supporting wheel carrier and the clamping plates are connected. The upper part is connected by embedding and matching the positioning column, the open groove and the vertical groove, and the lower part is connected by penetrating and matching the through hole and the open hole through an elastic pin column after being aligned. When the supporting wheel carrier is disassembled, only the elastic pin column needs to be pulled, the elastic pin column is separated from the through hole and the open hole, the open hole and the elastic pin column are separated through the opening of the other open hole, then the positioning column is separated from the vertical groove and the open groove, and therefore separation is completed, and people can assemble and disassemble the supporting wheel carrier when going out. The method has the advantages of simplicity and convenience in operation and higher efficiency.

Description

Technical Field

[0001] The utility model belongs to the technical field of baby carriages, and specifically relates to an improvement on a rear axle side support assembly structure of a baby carriage, in particular to a rear axle support wheel frame assembly structure. Background Art

[0002] Strollers are for children to ride or slide, but since children have low control ability, it is necessary to add support components on both sides of the structure of the stroller. It is common to install side support wheels on both sides of the rear axle, thereby forming a multi-point stable support structure that does not affect the riding or sliding of the stroller. The initial assembly method is to symmetrically set the two support wheel frames with support wheels on the two ends of the rear axle of the stroller frame, and then tighten them with fixing nuts, but this assembly method is inefficient. The operator needs to decompose the entire assembly process into multiple steps such as putting the support wheel frame on the rear axle, screwing on the fixing nuts, tightening, and checking. After research, some manufacturers have developed a card-mounted assembly structure, that is, using card blocks, card slots and other matching structures to assemble the support wheel frame, which also has the problem of cumbersome operation and efficiency needs to be further improved. Utility Model Content

[0003] The utility model overcomes the shortcomings of the prior art and provides a rear axle supporting wheel frame assembly structure.

[0004] The utility model provides the following technical solutions:

[0005] A rear axle support wheel frame assembly structure, characterized in that it includes two clamping plates, two spaced-apart clamping plates are arranged at two mutually spaced rear end portions of a frame, and the two clamping plates at the outer edges facing the rear end portions of any one of the frame are respectively provided with aligned grooves, and the two grooves are used for embedding positioning columns arranged in a corresponding manner at the upper end of the support wheel frame; the clamping plates below the two grooves are detachably connected to the aligned support wheel frame through pins.

[0006] Furthermore: positioning columns are installed in the space surrounded by the upper ends of the bent edges on both sides of the supporting wheel frame, and the bent edges on both sides can be pressed on the outer surfaces of the aligned clamping plates after the positioning columns are embedded in the slots.

[0007] Furthermore: through holes are arranged on the two clamping plates below the slot, and the two through holes are used to pass the pins; openings are arranged on the two bent edges of the supporting wheel frame corresponding to the through holes, and the openings are used for the pins to pass through.

[0008] Further: a limiting end of an elastic pin is limited in a through hole of a card plate, and the other end of the elastic pin can be pulled out of the through hole of another card plate to the space between the two card plates when the limiting end drives the elastic pin to be pulled outward of one card plate;

[0009] Furthermore: the opening on a bent edge of the support wheel frame and the elastic pin limit end has an opening extending to the edge of the bent edge on the same side, and the opening can allow the elastic pin exposed after the limit end is pulled to enter the opening connected with it through the opening during the swinging of the one bent edge toward the clamping plate as the support wheel frame rotates;

[0010] The opening on the other bent edge of the supporting wheel frame is aligned with the through hole on the same side clamping plate after the other bent edge is swung toward the clamping plate as the supporting wheel frame is rotated and pressed against the outer surface of the clamping plate in the corresponding position. The aligned through hole and opening are used for the end of the elastic pin for elastic reset to pass through.

[0011] Further: a protrusion is arranged at the edge of the clamping plate below the slot, and the protrusion is used to be embedded in a positioning hole arranged in a position of the supporting wheel frame.

[0012] Furthermore: the slot is formed with a vertical slot extending upward away from the bottom of the supporting wheel frame, and the vertical slot is used for the positioning column to move upward into position after passing through the slot and align the two through holes and the two openings respectively.

[0013] Furthermore: the upper ends of the two clamping plates are formed into an arc-shaped transition shape from top to bottom toward the upper end of the supporting wheel frame between the two bent edges.

[0014] Further:

[0015] Two clamping plates are fixedly installed on the surface of the rear end of the frame at intervals;

[0016] or,

[0017] The two clamping plates are respectively connected to the two sides of a base plate in one piece, or the two clamping plates are respectively connected to the two sides of a base plate in one piece, and the base plate is provided with a mounting hole for connecting with the rear end of the frame.

[0018] The preferred solution is:

[0019] Bumps for limiting are arranged on both sides of the bottom plate.

[0020] The beneficial effects of the utility model are:

[0021] In the utility model, two clamping plates are fixed at the rear end of the frame at intervals or two clamping plates are detachably mounted at the rear end of the frame through a connected bottom plate. Regardless of the mounting structure, the matching relationship between the support wheel frame and the clamping plates is an upper connection and a lower connection. The upper connection is a positioning column and a slot, and a vertical slot are embedded and matched. The lower connection is a through hole and an opening, and then the elastic pin is inserted and matched after the through hole and the opening are aligned. When disassembling, only the elastic pin needs to be pulled to make the elastic pin fall out of the through hole and the opening, and the opening of another opening also separates the opening from the elastic pin, and then the positioning column is removed from the vertical slot and the slot to complete the separation. People can install and disassemble the support wheel frame when going out. Compared with the structure of the prior art, it has the advantages of simpler operation and higher efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the utility model;

[0023] Figure 2 for Figure 1 Rear view of

[0024] Figure 3 for Figure 1 Exploded diagram of

[0025] Figure 4 It is a structural schematic diagram of the integral connection between the card-mounting plate and the base plate;

[0026] Figure 5 is an enlarged schematic diagram of an elastic pin;

[0027] Figure 6 A schematic diagram of a mounting plate being set on a rear wheel axle mounting plate. DETAILED DESCRIPTION

[0028] The present invention is further described below in conjunction with examples. The following examples are illustrative rather than restrictive, and the protection scope of the present invention cannot be limited by the following examples.

[0029] A rear axle support wheel frame assembly structure includes two clamping plates 3. Two spaced-apart clamping plates are arranged at two mutually spaced rear end portions of a frame. The two clamping plates at the outer edges of any one of the rear end portions of the frame are respectively provided with aligned grooves 18. The two grooves are used for embedding positioning columns 2 aligned at the upper end of the support wheel frame 8; the clamping plates below the two grooves are detachably connected to the aligned support wheel frame through pins 7.

[0030] As shown in the figure, the supporting wheel frame as a whole is generally vertical at the upper end, obliquely outward in the middle, and generally vertical at the lower end. A hole is made at the lower end, and the hole is used to install the axle of the supporting wheel. A bending edge 4 and another bending edge 16 are provided on both sides of the supporting wheel frame. The two bending edges can increase the overall strength of the supporting wheel frame. A hole is made at the upper end of each of the two bending edges, and then a cylindrical pipe with a slightly larger diameter is inserted into the two holes. The exposed end is cut off and polished smooth. Thus, the pipe located in the space surrounded by the two bending edges forms a positioning column. Figure 3 As shown, the bent edges on both sides can be pressed on the outer surface of the corresponding clamping plate after the positioning column is embedded in the slot, and the pressing relationship between the bent edges and the clamping plate forms a limit in the lateral direction between the clamping plate and the bent edges.

[0031] Through holes 20 are provided on the two clamping plates below the slot, and the two through holes are used to pass through the pins; openings 17 are provided on the two bending edges of the support wheel frame that are aligned with the through holes, and the openings are used for the pins to pass through. The specific structure is: a limiting end 15 of an elastic pin 7 is limited in the through hole of a clamping plate 3, that is, the limiting end is clamped in the through hole. The other end 24 of the elastic pin can escape from the through hole of the other clamping plate to the space between the two clamping plates when the limiting end drives the elastic pin to be pulled to the outside of one clamping plate. The opening 17 on a bending edge 4 of the support wheel frame that is aligned with the limiting end of the elastic pin has an opening 11 extending to the edge of the bending edge on the same side, and the opening can allow the elastic pin exposed after the limiting end is pulled outward to enter the opening 17 connected thereto through the opening 11 during the process of a bending edge 4 swinging toward the clamping plate as the support wheel frame rotates. The opening on the other bent edge 16 of the supporting wheel frame is aligned with the through hole on the same side clamping plate after the other bent edge is swung toward the clamping plate as the supporting wheel frame is pressed against the outer surface of the clamping plate in the corresponding position. The aligned through hole and opening are used for the end 24 of the elastic pin 7 for elastic reset to pass through.

[0032] The elastic reset means that the limit end 15 of the elastic pin and the remaining pin 12 are detachable structures, and an annular groove 23 is set on the outer edge of the remaining pin, and the snap ring 14 is installed in the annular groove. During assembly, the limit end and the remaining pin are separated, the snap ring is installed first, and then the spring is put on, and then the remaining pin and the spring are aligned with the through hole of the card plate, and the limit end is extended from the outside into the through hole and screwed with the end of the remaining pin, so that the spring is squeezed on the remaining pin between the inner surface of the card plate and the snap ring, and the limit end is located on the outside of the card plate. When the limit end is pulled outward and released, the elastic force of the spring supports the snap ring and drives the elastic pin to reset elastically, and the end 24 of the elastic pin just penetrates into the through hole and the opening on the same side.

[0033] The edge of the card plate below the slot is provided with a protrusion 5, which is used to be embedded in the positioning hole 6 arranged in the support wheel frame. The embedded fit of the protrusion and the positioning hole can further increase the position limitation of the card plate and the support wheel frame in the transverse direction.

[0034] A vertical groove 19 extending upward is formed at the bottom of the slot away from the supporting wheel frame. The vertical groove is used for the positioning column to move upward to a position after passing through the slot and to align the two through holes and the two openings. The vertical groove and the slot are substantially perpendicular to each other. The purpose of providing the vertical groove is to block the fixing column of the positioning column as a whole, that is, the positioning column in the front-to-back direction by the vertical groove, and then cooperate with the elastic pin to block in the front-to-back and vertical directions, so as to achieve the vertical and longitudinal (front-to-back direction) limitation of the clamping plate and the supporting wheel frame.

[0035] The upper ends of the two clamping plates are formed into an arcuate transition shape 21 from top to bottom toward the upper end of the support wheel frame between the two bending edges. This arcuate transition shape is for the support wheel frame to swing along the radial direction of the positioning column without touching the upper ends of the clamping plates.

[0036] There are two ways to fix the card plate, specifically:

[0037] 1. Two mounting plates are fixedly installed on the surface of the rear end of the frame at intervals, that is, there is a rear wheel axle mounting plate 28 at the ends of the two sides of the rear fork of the frame. Each mounting plate is directly made or welded or screwed to two mounting plates spaced apart from each other. Figure 6 As shown, the upper part 26 of the front end of the mounting plate is connected to the inclined beam, the lower part 25 is connected to the rear end of the rear flat fork, and the rear part 29 is used to install the rear wheel axle. Two clamping plates 3 are punched out on the mounting plate, and the square holes 27 after punching can play a role in weight reduction. And the slots 18, through holes 20 and arc-shaped transition shapes 21 on the clamping plates are processed according to the above description.

[0038] Of course, the above stamping method can also be replaced by directly fixing the card mounting plate on the mounting plate by welding.

[0039] 2. Two mounting plates are integrally connected to the two sides of a base plate 22 or two mounting plates are integrally connected to the two sides of a base plate, and the base plate is provided with a mounting hole 10 for connecting with the rear end of the frame. The base plate is buckled on the axle end of the rear wheel axle mounting plate and then fixed by a fixing nut. In order to prevent the base plate from twisting in the lateral direction, a convex block 1 for limiting is provided on both sides of the base plate, and two grooves or depressions are arranged in the mounting plate, and the base plate is more stable after the convex block is embedded in the groove or depression.

[0040] The use process of this utility model is:

[0041] The card-mounted plate is integrally connected to the base plate.

[0042] When installing:

[0043] The support wheel frame is roughly Figure 3 Approach in the direction shown, the positioning column is embedded in the slot, and the supporting wheel frame continues to be pushed. The arc transition on the upper end of the clamping plate prevents the supporting wheel frame from colliding with the upper end of the clamping plate.

[0044] When the positioning column reaches the vertical slot position, the supporting wheel frame is pushed upward. When the positioning column reaches the highest position of the vertical slot, the supporting wheel frame is swung toward the clamping plate with the positioning column as the axis.

[0045] When the bending edge is about to hit the elastic pin, the limit end is pulled outward, the elastic pin moves outward, the spring is compressed by the clamping plate, and the end 24 of the remaining pin escapes from the through hole and the opening to between the clamping plates. The support wheel frame continues to swing, the elastic pin on the limit end side enters the opening from the opening, and the opening on the other side is aligned with the through hole. At this time, the two bending edges are pressed on the outer surface of the clamping plate.

[0046] The limit end is released, the spring force is reset, the elastic pin is pushed to reset through the snap ring, and the remaining pin end 24 returns to the through hole or the opening, thereby completing the installation of the support wheel frame.

[0047] When disassembling:

[0048] Pull the limit end to move the elastic pin, and then swing the support wheel frame outward until it is roughly Figure 3 position and release the limit end.

[0049] The supporting wheel frame is moved downward, and then moved outward, and the supporting wheel frame and the clamping plate are separated from each other after the positioning column is disengaged from the slot.

[0050] In the utility model, two clamping plates are fixed at the rear end of the frame at intervals or two clamping plates are detachably mounted at the rear end of the frame through a connected bottom plate. Regardless of the mounting structure, the matching relationship between the support wheel frame and the clamping plates is an upper connection and a lower connection. The upper connection is a positioning column and a slot, and a vertical slot are embedded and matched. The lower connection is a through hole and an opening, and then the elastic pin is inserted and matched after the through hole and the opening are aligned. When disassembling, only the elastic pin needs to be pulled to make the elastic pin fall out of the through hole and the opening, and the opening of another opening also separates the opening from the elastic pin, and then the positioning column is removed from the vertical slot and the slot to complete the separation. People can install and disassemble the support wheel frame when going out. Compared with the structure of the prior art, it has the advantages of simpler operation and higher efficiency.

Claims

1. A rear axle support wheel frame assembly structure, characterized in that: It comprises two clamping plates, and two spaced-apart clamping plates are arranged at two mutually spaced-apart rear end parts of the frame. The two clamping plates at the outer edges of any rear end part of the frame are respectively provided with aligned grooves, and the two grooves are used for embedding the positioning columns arranged in a corresponding manner at the upper end of the supporting wheel frame; the clamping plates below the two grooves are detachably connected to the aligned supporting wheel frame through pins.

2. The rear axle support wheel frame assembly structure according to claim 1, characterized in that: Positioning columns are installed in the space surrounded by the upper ends of the bent edges on both sides of the supporting wheel frame. The bent edges on both sides can be pressed on the outer surfaces of the aligned clamping plates respectively after the positioning columns are embedded in the slots.

3. The rear axle support wheel frame assembly structure according to claim 2, characterized in that: The two clamping plates below the slot are provided with through holes, and the two through holes are used to pass the pins; the two bent edges of the supporting wheel frame are provided with openings corresponding to the through holes, and the openings are used for the pins to pass through.

4. The rear axle support wheel frame assembly structure according to claim 3, characterized in that: A limiting end of an elastic pin is limited in a through hole of a card plate, and the other end of the elastic pin can escape from the through hole of another card plate to the space between the two card plates when the limiting end drives the elastic pin to be pulled toward the outside of one card plate.

5. The rear axle support wheel frame assembly structure according to claim 4, characterized in that: The opening on a bent edge of the support wheel frame and the elastic pin limit end has an opening extending to the edge of the bent edge on the same side, and the opening can allow the elastic pin exposed after the limit end is pulled to enter the opening connected with it through the opening during the swinging of the one bent edge toward the clamping plate as the support wheel frame rotates; The opening on the other bent edge of the supporting wheel frame is aligned with the through hole on the same side clamping plate after the other bent edge is swung toward the clamping plate as the supporting wheel frame is rotated and pressed against the outer surface of the clamping plate in the corresponding position. The aligned through hole and opening are used for the end of the elastic pin for elastic reset to pass through.

6. A rear axle support wheel frame assembly structure according to claim 1 or 2 or 3 or 4 or 5, characterized in that: A protrusion is arranged at the edge of the clamping plate below the slot, and the protrusion is used to be embedded in a positioning hole arranged in a position on the supporting wheel frame.

7. A rear axle support wheel frame assembly structure according to claim 1 or 2 or 3 or 4 or 5, characterized in that: The slot is formed with a vertical slot extending upward away from the bottom of the supporting wheel frame. The vertical slot is used for the positioning column to move upward to a position after passing through the slot and to align the two through holes and the two openings respectively.

8. The rear axle support wheel frame assembly structure according to claim 6, characterized in that: The upper ends of the two clamping plates are formed into an arc transition shape from top to bottom toward the upper end of the supporting wheel frame between the two bending edges.

9. The rear axle support wheel frame assembly structure according to claim 7, characterized in that: The upper ends of the two clamping plates are formed into an arc transition shape from top to bottom toward the upper end of the supporting wheel frame between the two bending edges.

10. A rear axle support wheel frame assembly structure according to claim 1 or 2 or 3 or 4 or 5 or 8 or 9, characterized in that: Two clamping plates are fixedly installed on the surface of the rear end of the frame at intervals; or, The two clamping plates are respectively connected to the two sides of a base plate in one piece, or the two clamping plates are respectively connected to the two sides of a base plate in one piece, and the base plate is provided with a mounting hole for connecting with the rear end of the frame.

11. The rear axle support wheel frame assembly structure according to claim 10, characterized in that: Bumps for limiting are arranged on both sides of the bottom plate.

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