Handlebar impact folding frame

Abstract

The utility model relates to the field of baby carriages, in particular to a handlebar impact folding frame. Comprising a front foot tube and a rear foot tube, a handle mounting tube is arranged on one side of the front foot tube, a lower handle tube is slidably arranged in the handle mounting tube, the rear foot tube is hinged to the lower end of the lower handle tube, a connecting rod is arranged between the rear foot tube and the handle mounting tube, one end of the connecting rod is hinged to the rear foot tube, and the other end of the connecting rod is hinged to the handle mounting tube. A lower handle tube is arranged in the handle mounting tube, an upper handle tube is slidably arranged in the lower handle tube, a handle locking and releasing mechanism is arranged between the upper handle tube and the lower handle tube and used for locking the upper handle tube in the lower handle tube or releasing the upper handle tube from the lower handle tube, and a frame locking and releasing mechanism is arranged between the lower handle tube and the handle mounting tube. And the frame locking and releasing mechanism is used for locking the lower handlebar tube in the handlebar mounting tube or releasing the lower handlebar tube from the handlebar mounting tube. The utility model has the following technical effects: the handlebar impact folding frame disclosed by the utility model is convenient to use, can be folded by a single hand, and is strong in practicability.

Description

Technical Field

[0001] The utility model relates to the field of baby carriages, in particular to a handlebar-colliding foldable carriage frame. Background Art

[0002] A baby stroller is a tool vehicle designed for the convenience of outdoor activities for infants and young children. It has long been widely used. In order to make baby strollers more convenient to carry and store, baby strollers are currently designed to be foldable. In this way, when the baby stroller is not in use, it can be folded into a smaller volume for easy carrying and storage.

[0003] At present, the folding method of the cart relies on pulling a pin or a gear to fix the handle tube and the rear foot tube to achieve the purpose of folding the cart; however, due to multiple factors such as resistance and friction, the large force required during folding makes it difficult to fold the cart, and the strength of the platform is insufficient when pressing down, which makes it more difficult for the operator to fold the cart, making it difficult for the operator to fold the cart. Utility Model Content

[0004] Based on this, it is necessary to provide a handlebar that impacts and folds the frame to achieve the purpose of locking the handlebar firmly and adjusting the height only under human control, in order to address the problem that the lock tongue in the locking mechanism of the handlebar in the prior art is easily retracted into the handlebar by external force, causing the upper part of the handlebar to slide down, which may hit the children in the car.

[0005] Therefore, the present application provides a handlebar impact folding frame, including a front leg tube 1 and a rear leg tube 5, a handlebar mounting tube 2 is provided on one side of the front leg tube 1, a lower handlebar tube 3 is slidably provided in the handlebar mounting tube 2, the rear leg tube 5 is hingedly connected to the lower end of the lower handlebar tube 3, a connecting rod 6 is provided between the rear leg tube 5 and the handlebar mounting tube 2, one end of the connecting rod 6 is hinged to the rear leg tube 5, and the other end is hinged to the handlebar mounting tube 2, an upper handlebar tube 4 is slidably provided in the lower handlebar tube 3, a handlebar locking and releasing mechanism is provided between the upper handlebar tube 4 and the lower handlebar tube 3, the handlebar locking and releasing mechanism is used to lock the upper handlebar tube 4 in the lower handlebar tube 3 or release the upper handlebar tube 4 from the lower handlebar tube 3, a frame locking and releasing mechanism is provided between the lower handlebar tube 3 and the handlebar mounting tube 2, the frame locking and releasing mechanism is used to lock the lower handlebar tube 3 in the handlebar mounting tube 2 or release the lower handlebar tube 3 from the handlebar mounting tube 2.

[0006] In some embodiments, the handlebar lock release mechanism includes a handlebar locking seat 110 and a locking bar 200, the handlebar locking seat 110 is provided with a first groove 111 and a second groove 112, a first locking member 120 is slidably installed in the first groove 111, a plurality of locking holes 210 are provided in the locking bar 200, the first locking member 120 is slidably connected to the locking holes 210, a first return spring 130 and a pull rope 140 are installed in the second groove 112, and the first return spring 130 and the pull rope 140 are both transmission-connected to the first locking member 120 through a transmission assembly.

[0007] In some embodiments, the transmission assembly includes a U-shaped sliding member 151, a first shaft 152 and a second shaft 153 which are mounted on the outside of the handlebar locking seat 110, the first locking member 120 is connected to the sliding member 151 through the first shaft 152, and the first return spring 130 and the pull rope 140 are connected to the sliding member 151 through the second shaft 153.

[0008] In some embodiments, the handlebar locking seat 110 is provided with a first bar hole 113 and a second bar hole 114, the first bar hole 113 is connected with the first groove 111, and the second bar hole 114 is connected with the second groove 112, and the sliding member 151 is provided with a third bar hole 154, and the third bar hole 154 is cross-arranged with the corresponding first bar hole 113, the number one axis 152 passes through the first locking member 120 and the first bar hole 113, and is movably clamped in the third bar hole 154 at both ends, and the number two axis 153 passes through the second bar hole 114 and is connected to the sliding member 151 at both ends.

[0009] In some embodiments, the frame lock release mechanism includes a frame lock assembly 300 and a first positioning hole 31 opened on the surface of the lower handlebar tube 3 and a second positioning hole 21 opened on the surface of the handlebar mounting tube 2. The frame lock assembly 300 includes a frame lock seat 310 fixedly installed in the lower handlebar tube 3. The frame lock seat 310 is provided with a third groove 311 and a fourth groove 312. A second locking member 320 is slidably arranged in the third groove 311. The surface of the second locking member 320 is slidably connected with the first positioning hole 31 and the second positioning hole 21. A protrusion 321 is arranged on the second locking member 320. A transmission pin 330 is arranged in the fourth groove 312. The transmission pin 330 has an inclined surface. The protrusion 321 is slidably connected with the inclined surface.

[0010] In some embodiments, a second return spring 340 is fixedly connected to the rear side of the second locking member 320 , and a rear end of the second return spring 340 is fixedly connected to an inner wall of the third groove 311 .

[0011] In some embodiments, a third return spring 350 is fixedly connected to the bottom of the driving pin 330 , and a bottom end of the third return spring 350 is fixedly connected to an inner wall of the fourth groove 312 .

[0012] The utility model provides a handlebar impact folding frame, which has the following technical effects: the handlebar impact folding frame in the utility model is easy to use, can be folded by one hand, and is highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0015] Figure 2 The utility model is a schematic diagram of the position structure of the handlebar locking seat and the locking strip.

[0016] Figure 3 It is a schematic diagram of the transmission component structure of the utility model.

[0017] Figure 4 It is a structural schematic diagram of a handlebar locking seat of the utility model.

[0018] Figure 5 It is a schematic diagram of the position structure of the first return spring of the utility model.

[0019] Figure 6 It is a schematic diagram of the pull rope position structure of the utility model.

[0020] Figure 7 It is a structural schematic diagram of a frame locking assembly of the utility model.

[0021] Figure 8 It is a structural schematic diagram of a frame locking seat of the utility model.

[0022] Fig. 9 It is a schematic diagram of the internal structure of the frame locking component of the utility model.

[0023] Fig.10 It is a schematic diagram of the position structure of the second locking member and the transmission pin of the utility model.

[0024] Fig.11 It is a schematic diagram of the position of the second positioning hole of the utility model.

[0025] Fig.12 It is a schematic diagram of the position of the first positioning hole of the utility model.

[0026] Explanation of the reference numerals: front leg tube 1, handlebar mounting tube 2, second positioning hole 21, lower handlebar tube 3, first positioning hole 31, upper handlebar tube 4, pull rope button 41, rear leg tube 5, connecting rod 6, handlebar locking seat 110, first groove 111, second groove 112, first strip hole 113, second strip hole 114, first locking member 120, first return spring 130, pull rope 140, sliding member 151, first shaft 152, second shaft 153, third strip hole 154, locking bar 200, locking hole 210, frame locking assembly 300, frame locking seat 310, third groove 311, fourth groove 312, second locking member 320, protrusion 321, transmission pin 330, top plate 331, side plate 332, second return spring 340, third return spring 350. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0028] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "liquid level", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0029] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0030] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] In the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature has a higher liquid level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature has a lower liquid level than the second feature.

[0032] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "liquid horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0033] An embodiment of the utility model provides a handlebar that hits and folds a bicycle frame. The following will be combined with the drawings in the embodiment of the utility model to clearly and completely describe the technical solution in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] See also Figure 1 The utility model provides a technical solution: a handlebar impact folding frame, including a front leg tube 1 and a rear leg tube 5, such as Figure 1As shown, a handlebar mounting tube 2 is provided on one side of the front leg tube 1, a lower handlebar tube 3 is slidably provided in the handlebar mounting tube 2, the rear leg tube 5 is hingedly connected to the lower end of the lower handlebar tube 3, a connecting rod 6 is provided between the rear leg tube 5 and the handlebar mounting tube 2, one end of the connecting rod 6 is hinged to the rear leg tube 5, and the other end is hinged to the handlebar mounting tube 2, an upper handlebar tube 4 is slidably provided in the lower handlebar tube 3, a handlebar locking and releasing mechanism is provided between the upper handlebar tube 4 and the lower handlebar tube 3, the handlebar locking and releasing mechanism is used to lock the upper handlebar tube 4 in the lower handlebar tube 3 or release the upper handlebar tube 4 from the lower handlebar tube 3, a frame locking and releasing mechanism is provided between the lower handlebar tube 3 and the handlebar mounting tube 2, the frame locking and releasing mechanism is used to lock the lower handlebar tube 3 in the handlebar mounting tube 2 or release the lower handlebar tube 3 from the handlebar mounting tube 2.

[0035] See also Figures 2 to 6 The handle lock release mechanism includes a handle lock seat 110 fixedly mounted on the upper handle tube 4 and a locking strip 200 fixedly mounted on the lower handle tube 3, wherein the locking strip 200 is provided with a plurality of locking holes 210. Figure 4 As shown, the handlebar locking seat 110 is provided with a first groove 111 and a second groove 112. Figure 3 As shown, a first locking member 120 is slidably installed in the first groove 111, and the first locking member 120 is slidably connected to the locking hole 210. Figure 5 and Figure 6 As shown, the first return spring 130 and the drawstring 140 are installed in the second groove 112, and the first return spring 130 and the drawstring 140 are both connected to the first locking member 120 through the transmission assembly. The drawstring 140 is pulled through the transmission assembly to pull the first locking member 120 to slide out of the locking hole 210 and retract into the first groove 111, so that the upper handlebar tube 4 and the lower handlebar tube 3 are released from fixation, and the drawstring 140 is released, and the first return spring 130 pushes the first locking member 120 through the transmission assembly to slide into the locking hole 210, so that the upper handlebar tube 4 and the lower handlebar tube 3 are in a relatively fixed state.

[0036] See also Figure 5 and Figure 6 The transmission assembly includes a U-shaped sliding member 151, a first shaft 152 and a second shaft 153 sleeved on the outside of the handlebar locking seat 110. The first locking member 120 is connected to the sliding member 151 through the first shaft 152. The first return spring 130 and the pull rope 140 are connected to the sliding member 151 through the second shaft 153. One end of the first return spring 130 is connected to the second shaft 153, and the other end is connected to the handlebar locking seat 110. One end of the pull rope 140 is connected to the second shaft 153, and the other end is connected to the pull rope button 41 set on the upper handlebar tube 4. The pull rope button 41 is used to pull the pull rope 140. The button and pull rope transmission mechanism is a common transmission structure in baby carriages, which will not be described here one by one.

[0037] Specifically, the handlebar locking seat 110 is provided with two relatively arranged first bar holes 113 and two symmetrically arranged second bar holes 114, the first bar holes 113 are connected with the first groove 111, and the second bar holes 114 are connected with the second groove 112, and the two U-shaped arm side plates of the sliding member 151 are symmetrically provided with third bar holes 154, and the third bar holes 154 are cross-arranged in an X shape with the corresponding first bar holes 113, the number one shaft 152 passes through the first locking member 120 and the first bar hole 113, and both ends are movably clamped in the third bar hole 154 on the sliding member 151, and the number two shaft 153 passes through the second bar hole 114 and both ends are connected to the sliding member 151.

[0038] See also Figures 7 to 12 The frame lock release mechanism includes a frame locking assembly 300 installed in the lower handlebar tube 3, a first positioning hole 31 opened on the surface of the lower handlebar tube 3, and a second positioning hole 21 opened on the surface of the handlebar mounting tube 2. The frame locking assembly 300 includes a frame locking seat 310 fixedly installed in the lower handlebar tube 3. Figure 8 As shown, the frame locking seat 310 is provided with a third groove 311 and a fourth groove 312, the third groove 311 and the fourth groove 312 are vertically arranged, and the second locking member 320 is slidably arranged in the third groove 311, as shown in FIG. Fig.12 As shown, the second locking member 320 is provided with protrusions 321 on both sides, and the surface of the second locking member 320 is slidably connected with the first positioning hole 31 and the second positioning hole 21. A transmission pin 330 is provided in the fourth groove 312, and the transmission pin 330 has a top plate 331 and two side plates 332 symmetrically arranged below the top plate 331. The sides of the two side plates 332 in the same direction have an inclined surface. The second locking member 320 is installed between the two side plates 332, and the two protrusions 321 are respectively slidably connected with the corresponding inclined surfaces. Then, a second return spring 340 is fixedly connected to the rear side of the second locking piece 320, and the rear end of the second return spring 340 is fixedly connected to the inner wall of the third groove 311. The second return spring 340 can be reset and compressed by the forward and backward movement of the second locking piece 320; a third return spring 350 is fixedly connected to the bottom of the transmission pin 330, and the bottom end of the third return spring 350 is fixedly connected to the inner wall of the fourth groove 312. The third return spring 350 can be reset and compressed by the up and down movement of the transmission pin 330.

[0039] Working principle: When the pull rope 140 is pulled by the pull rope button 41 and the pull rope 140 pulls the second shaft 153 to slide upward, the second shaft 153 slides upward to compress the second return spring 340, and the second shaft 153 drives the sliding member 151 to slide upward on the handlebar locking seat 110. The first shaft 152 drives the first locking member 120 to retract into the handlebar locking seat 110 under the drive of the sliding member 151. At this time, the upper handlebar tube 4 can slide in the lower handlebar tube 3, and the pull rope button is released. The second return spring 340 resets and pushes the second shaft 153 to slide downward, driving the sliding member 151 to slide downward on the handlebar locking seat 110. The first shaft 152 drives the first locking member 120 to extend out of the handlebar locking seat 110 and get into the slot of the locking strip under the drive of the sliding member 151. At this time, the upper handlebar tube 4 is locked in the lower handlebar tube 3.

[0040] The pull rope 140 is pulled again by the pull rope button 41 to unlock the upper handlebar tube 4 from the lower handlebar tube 3. The user pushes the upper handlebar tube 4 downward, and the handlebar locking seat 110 hits the transmission pin 5, so that the transmission pin 5 moves downward in the fourth groove 312. The inclined surface of the transmission pin 5 forces the second locking member 320 to move backward, so that the second locking member 320 slides out of the second positioning hole 21 of the handlebar mounting tube and retracts into the lower handlebar tube 3. The second return spring 340 is compressed, and the second return spring 340 is compressed. The second locking piece 320 releases the fixation of the handlebar mounting tube 2, and the upper handlebar tube 4 is continuously pushed, and the upper handlebar tube 4 drives the lower handlebar tube 3 to slide in the handlebar mounting tube 2, so that the upper handlebar tube 4 is retracted into the lower handlebar tube 3, and the lower handlebar tube 3 is retracted to one side of the front leg tube 1, and the rear leg tube 5 rotates around the hinge point with the lower handlebar tube 4 until it is as parallel to the lower handlebar tube 3 as possible. At the same time, the angle between the connecting rod 6 and the rear leg tube 5 becomes larger and larger, so that the connecting rod 6 is almost parallel to the lower handlebar tube 3, and the frame is retracted.

[0041] When the frame needs to be opened, the upper handlebar tube 4 is pulled upward, and the first locking member 120 is locked with any locking hole 210, so that the upper handlebar tube 4 is locked in the lower handlebar tube 3. The upper handlebar tube 4 is pulled upward continuously, driving the lower handlebar tube 3 to slide upward in the handlebar mounting tube 2. The transmission pin 5 moves upward under the reset force of the third reset spring 350. At the same time, the second locking member 320 slides into the first positioning hole 31 of the lower handlebar tube under the reset force of the second reset spring 340 and abuts against the inner wall of the handlebar mounting tube 2 until the second positioning hole 21 of the handlebar mounting tube coincides with the first positioning hole 31 of the lower handlebar tube. The second locking member 320 slides into the second positioning hole 21 of the handlebar mounting tube, so that the lower handlebar tube 3 is locked in the handlebar mounting tube 2.

[0042] The utility model provides a handlebar impact folding frame, which has the following technical effects: the handlebar impact folding frame in the utility model is easy to use, can be folded by one hand, and is highly practical.

[0043] The above description is only used to illustrate the technical solution of the utility model rather than to limit it. Other modifications or equivalent substitutions made to the technical solution of the utility model by ordinary technicians in this field should be included in the scope of the claims of the utility model as long as they do not depart from the spirit and scope of the technical solution of the utility model.

Claims

1. A handlebar-impacting foldable frame, characterized in that: The bicycle frame locking release mechanism is provided between the lower handlebar tube and the handlebar mounting tube, and the frame locking release mechanism is provided between the lower handlebar tube and the handlebar mounting tube, and the frame locking release mechanism is provided between the lower handlebar tube and the handlebar mounting tube, and the frame locking release mechanism is provided between the lower handlebar tube and the handlebar mounting tube, and the frame locking release mechanism is provided between the lower handlebar tube and the handlebar mounting tube, and the frame locking release mechanism is provided for locking the lower handlebar tube in the handlebar mounting tube or releasing the lower handlebar tube from the handlebar mounting tube.

2. A handlebar impact folding frame according to claim 1, characterized in that: The handlebar lock release mechanism includes a handlebar locking seat and a locking strip, the handlebar locking seat is provided with a first groove and a second groove, a first locking piece is slidably installed in the first groove, a plurality of locking holes are provided on the locking strip, the first locking piece is slidably connected to the locking holes, a first return spring and a pull rope are installed in the second groove, and the first return spring and the pull rope are both transmission-connected to the first locking piece through a transmission assembly.

3. The handlebar impact folding frame according to claim 2, characterized in that: The transmission assembly includes a U-shaped sliding member, a first shaft and a second shaft which are sleeved on the outside of the handlebar locking seat. The first locking member is transmission-connected to the sliding member via the first shaft, and the first return spring and the pull rope are transmission-connected to the sliding member via the second shaft.

4. The handlebar impact folding frame according to claim 3, characterized in that: The handlebar locking seat is provided with a first strip hole and a second strip hole, the first strip hole is connected with the first groove, the second strip hole is connected with the second groove, the sliding member is provided with a third strip hole, the third strip hole is cross-arranged with the corresponding first strip hole, the No. 1 shaft passes through the first locking member and the first strip hole, and is movably clamped in the third strip hole at both ends, and the No. 2 shaft passes through the second strip hole and is connected to the sliding member at both ends.

5. The handlebar impact folding frame according to claim 1, characterized in that: The frame lock release mechanism includes a frame locking assembly and a first positioning hole formed on the surface of the lower handlebar tube and a second positioning hole formed on the surface of the handlebar mounting tube. The frame locking assembly includes a frame locking seat fixedly installed in the lower handlebar tube, a third groove and a fourth groove are provided in the frame locking seat, a second locking piece is slidably provided in the third groove, a surface of the second locking piece is slidably connected to the first positioning hole and the second positioning hole, a protrusion is provided on the second locking piece, a transmission pin is provided in the fourth groove, the transmission pin has an inclined surface, and the protrusion is slidably connected to the inclined surface.

6. The handlebar impact folding frame according to claim 5, characterized in that: A second return spring is fixedly connected to the rear side of the second locking member, and a rear end of the second return spring is fixedly connected to the inner wall of the third groove.

7. The handlebar-impact-folding frame according to claim 5, characterized in that: The bottom of the transmission pin is fixedly connected with a third return spring, and the bottom end of the third return spring is fixedly connected to the inner wall of the fourth groove.

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