Parking device for trolley

Abstract

The utility model relates to the technical field of trolley parking mechanisms, in particular to a parking device for a trolley, which is characterized in that a positioning disc comprises a plurality of positioning sleeves arranged on the periphery of an axle on the inner side of a wheel along the circumferential direction; the parking mechanism comprises pipe bodies fixed to the two ends of the bottom face of the shaft sleeve pipe, column bodies arranged in the pipe bodies in a sliding and sleeved mode, positioning pins fixed to the outer ends of the column bodies and matched with the positioning sleeves in a sleeved mode, linkage battens fixed to the inner ends of the column bodies, springs arranged outside the linkage battens in a sleeving mode and limiting bolts arranged at the inner ends of the pipe bodies in a sleeving mode in the radial direction. The parking switch comprises a sleeve fixedly arranged on the hand pushing frame in a sleeving mode and a long circular block with the top end hinged to the top end of the outer wall of the sleeve, the bottom end of the sleeve is provided with a supporting block for positioning the top end of the outer sleeve, and the top end of the core wire is connected to the bottom end of the long circular block. A baffle fixed on the bottom surface of the shaft sleeve is used for positioning the bottom end of the outer sleeve; the problem that a trolley with large-size wheels is difficult to reliably park is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of a parking mechanism for a trolley, in particular to a parking device for a trolley. Background Art

[0002] At present, for a stroller such as a baby carriage, a brake mechanism is generally added to ensure driving safety, and the brake mechanism generally includes a brake handle, a brake line and a brake mechanism. However, this type of brake mechanism is generally suitable for deceleration and pause operations when the stroller is pushed, and is inconvenient to operate when the stroller is parked for a long time.

[0003] For the parking operation of the trolley, the brake wheel is currently mostly used, but this method is generally only suitable for wheels of smaller sizes, and it is difficult to achieve a reliable parking effect for wheels of larger sizes. Utility Model Content

[0004] The utility model aims to provide a parking device for a trolley, which is used to solve the problem in the prior art that a trolley with large-sized wheels is difficult to park reliably.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a parking device for a wheelbarrow, comprising a vehicle body and a brake line, wherein an axle sleeve is fixed laterally at the bottom of the vehicle body, wheels are sleeved at both ends of the axle sleeve, a hand push frame is provided on the top of the rear end of the vehicle body, the brake line comprises an outer sleeve and a core wire movably sleeved in the inner cavity of the outer sleeve, the positioning plate comprises a plurality of positioning sleeves circumferentially arranged on the periphery of the axle on the inner side of the wheel, the parking mechanism comprises a tube body fixed at both ends of the bottom surface of the axle sleeve, a column body slidably sleeved in the inner cavity of the tube body near the outer end position, a positioning pin fixed in the middle of the outer end surface of the column and sleeved with the positioning sleeve, and a positioning pin fixed in the middle of the inner end surface of the column The locking mechanism is formed on a pair of locking plates at the bottom, the locking mechanism being a spring-loaded stop that is fixed to the side of the holder and having a spring that is fixed to the side of the holder. The locking mechanism has a spring that is fixed to the side of the holder and is used to lock the holder.

[0006] Preferably, the inner end of the wheel axle is sleeved on the end of the inner cavity of the axle sleeve, and the positioning plate also includes a circular disc fixed to the middle part of the inner side of the wheel, and the middle part of the circular disc is provided with an axial hole matching the rotating sleeve of the axle, and the positioning sleeve is evenly fixed at the outer edge of the inner wall of the circular disc along the circumferential direction.

[0007] Preferably, both ends of the outer sleeve are respectively fixedly sleeved with rigid sleeves, the top end of the core wire is fixed with a connecting ring, and the bottom end of the core wire is fixed with a short column.

[0008] Preferably, a circular hole with a diameter smaller than the outer diameter of the rigid sleeve is provided at the center of the baffle, and an opening groove 2 connected to the circular hole is vertically provided on the bottom side of the middle part of the baffle, and the width of the opening groove 2 is equal to the outer diameter of the core wire.

[0009] Preferably, the inner end of the tube body is provided with a through hole which matches with the limiting bolt sleeve, and the limiting bolt passes through the through hole and is then sleeved with a nut.

[0010] Preferably, a bending portion is provided at the inner end of the linkage strip, and an open groove having a width equal to the outer diameter of the core wire is provided in the middle of the bending portion.

[0011] Preferably, the front and rear sides of the middle part of the bottom surface of the support block are respectively provided with circular grooves that match the rigid sleeve, the upper side of the middle part of the circular groove is provided with a through hole that matches the sliding sleeve of the top of the core wire, and the front and rear sides of the support block are provided with strip slits corresponding to the positions of the circular groove and the through hole, an ear plate is fixed to the top of the sleeve and located above the middle part of the support block, and a rotating shaft is sleeved on the end of the ear plate, a hinge groove that matches the ear plate is provided in the middle part of the top end of the oblong block, and the front and rear walls of the hinge groove are rotatably sleeved on the rotating shaft, a paddle plate is provided on the front side of the oblong block, and a connecting hole is provided at the bottom end of the oblong block, and the two ends of the bolt sleeved in the connecting hole are respectively sleeved on the connecting ring.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The utility model relates to a parking device for a trolley, which can facilitate the relaxation of the inner core wire of the brake line by toggling an oblong block, and coupled with the pushing effect of the spring on the column, the positioning pin is plugged into the corresponding positioning sleeve, thereby realizing long-term and stable parking of the trolley; the oblong block is toggled in the opposite direction, the core wire can be tensioned, so that the spring is compressed, and the positioning pin is separated from the corresponding positioning sleeve, so as to achieve the effect of quickly releasing the parking. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall side view of the utility model;

[0015] Figure 2 For this utility model Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0016] Figure 3 It is a three-dimensional structural schematic diagram of the shaft sleeve of the utility model;

[0017] Figure 4 This is a three-dimensional structural schematic diagram of the positioning plate of the utility model;

[0018] Figure 5 It is a schematic diagram of the exploded structure of the parking mechanism of the utility model;

[0019] Figure 6 It is a three-dimensional structural schematic diagram of the linkage slats of the utility model;

[0020] Figure 7 This is a schematic diagram of the main structure of the brake cable of the utility model;

[0021] Figure 8 It is a three-dimensional structural schematic diagram of the parking switch of the utility model;

[0022] Fig. 9 This is a schematic diagram of the parking switch state of the utility model when it is parked;

[0023] Fig.10 This is a schematic diagram of the parking switch state of the utility model when not in parking mode;

[0024] Fig.11 It is a three-dimensional structural schematic diagram of the baffle of the utility model.

[0025] In the figure: 1-car body; 1.1-axle sleeve; 1.2-wheel; 1.3-hand push frame

[0026] 2-positioning plate; 2.1-disc; 2.2-shaft hole; 2.3-positioning sleeve;

[0027] 3-parking mechanism; 3.1-tube body; 3.1.1-perforation; 3.2-column; 3.3-positioning pin; 3.4-linked strip; 3.4.1-strip groove; 3.4.2-bending part; 3.4.3-opening groove 1; 3.5-spring; 3.6-limiting bolt;

[0028] 4-brake line; 4.1-outer sleeve; 4.2-rigid sleeve; 4.3-core wire; 4.4-short column; 4.5-connecting ring;

[0029] 5-parking switch; 5.1-sleeve; 5.1.1-support block; 5.1.2-round groove; 5.1.3-through hole; 5.1.4-slit; 5.1.5-ear plate; 5.2-oblong block; 5.2.1-push plate; 5.2.2-connecting hole; 5.2.3-hinge groove; 5.3-rotating shaft;

[0030] 6-blocking piece; 6.1-circular hole; 6.2-opening slot 2. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0032] See also Figure 1-11 The utility model provides a technical solution, a parking device for a trolley, including a body 1 and a brake line 4, an axle sleeve 1.1 is fixed to the bottom of the body 1 in the horizontal direction, wheels 1.2 are sleeved at both ends of the axle sleeve 1.1, a trolley frame 1.3 is provided on the top of the rear end of the body 1, and the inner end of the wheel axle of the wheel 1.2 is sleeved on the end of the inner cavity of the axle sleeve 1.1.

[0033] The positioning disc 2 comprises a disc 2.1 fixed to the middle of the inner side of the wheel 1.2. The middle of the disc 2.1 is provided with an axial hole 2.2 which is matched with the axle rotation sleeve. The positioning sleeve 2.3 is evenly fixed to the outer edge of the inner wall of the disc 2.1 along the circumferential direction.

[0034] The brake line 4 comprises an outer sleeve 4.1 and a core line 4.3 movably sleeved in the inner cavity of the outer sleeve 4.1. Rigid sleeves 4.2 are fixedly sleeved at both ends of the outer sleeve 4.1. A connecting ring 4.5 is fixed at the top of the core line 4.3. A short column 4.4 is fixed at the bottom of the core line 4.3.

[0035] The parking mechanism 3 includes a tube body 3.1 fixed to both ends of the bottom surface of the shaft sleeve 1.1, a column 3.2 slidably sleeved in the inner cavity of the tube body 3.1 near the outer end, a positioning pin 3.3 fixed to the middle of the outer end surface of the column 3.2 and sleeved with the positioning sleeve 2.3, a linkage strip 3.4 fixed to the middle of the inner end surface of the column 3.2, a spring 3.5 sleeved on the outside of the linkage strip 3.4 and a limit bolt 3.6 sleeved on the inner end of the tube body 3.1 along the radial direction, the middle part of the linkage strip 3.4 is provided with a strip groove 3.4.1 that is slidably engaged with the limit bolt 3.6, the inner end of the linkage strip 3.4 is connected to the bottom end of the core wire 4.3, the inner end of the linkage strip 3.4 is provided with a bending portion 3.4.2, and the middle part of the bending portion 3.4.2 is provided with an open groove 3.4.3 whose width is equal to the outer diameter of the core wire 4.3. When the bottom end of the core wire 4.3 is connected to the inner end of the linkage strip 3.4, the core wire 4.3 is first inserted into the opening groove 1 3.4.3, and then the short column 4.4 is supported on the inner peripheral wall of the bending portion 3.4.2 to achieve a quick connection between the core wire 4.3 and the linkage strip 3.4. The inner end of the spring 3.5 is supported on the limit bolt 3.6, and the outer end of the spring 3.5 is supported on the inner end surface of the column 3.2. In addition, the inner end of the tube body 3.1 is provided with a through hole 3.1.1 that is sleeved and matched with the limit bolt 3.6, and the limit bolt 3.6 is fitted with a nut after passing through the through hole 3.1.1.

[0036] The parking switch 5 comprises a sleeve 5.1 fixedly mounted on one side of the hand push frame 1.3 and an oblong block 5.2 whose top end is hinged to the top of the outer peripheral wall of the sleeve 5.1. The bottom end of the outer peripheral wall of the sleeve 5.1 is provided with a support block 5.1.1 for positioning the top of the outer sleeve 4.1, and the top of the core wire 4.3 is connected to the bottom end of the oblong block 5.2. Among them, the front and rear sides of the middle of the bottom surface of the support block 5.1.1 are respectively provided with circular grooves 5.1.2 that match the rigid sleeve 4.2, and the upper side of the middle of the circular groove 5.1.2 is provided with a through hole 5.1.3 that matches the top of the core wire 4.3. The front and rear sides of the support block 5.1.1 are provided with strip slits 5.1.4 corresponding to the circular groove 5.1.2 and the through hole 5.1.3, and an ear plate is fixed at the top of the sleeve 5.1 and located above the middle of the support block 5.1.1. 5.1.5, the end of the ear plate 5.1.5 is sleeved with a rotating shaft 5.3, the middle of the top of the oblong block 5.2 is provided with a hinge groove 5.2.3 that matches the ear plate 5.1.5, and the front and rear walls of the hinge groove 5.2.3 are rotatably sleeved on the rotating shaft 5.3, the front side of the oblong block 5.2 is provided with a dial plate 5.2.1, the bottom end of the oblong block 5.2 is provided with a connecting hole 5.2.2, and the two ends of the bolt sleeved in the connecting hole 5.2.2 are respectively sleeved with the connecting ring 4.5. That is, the top of the core wire 4.3 is convenient to enter the circular groove 5.1.2 and the through hole 5.1.3 from the strip slit 5.1.4, the top of the rigid sleeve 4.2 at the top of the outer sleeve 4.1 is sleeved in the corresponding circular groove 5.1.2, and then the bolt is used to pass through the connecting ring 4.5 and installed in the connecting hole 5.2.2 to realize the assembly of the top of the brake line 4.

[0037] The baffle 6 is fixed to the bottom surface of the shaft sleeve 1.1 near the middle, and the baffle 6 is used to position the bottom end of the outer sleeve 4.1. The center of the baffle 6 is provided with a circular hole 6.1 whose aperture is smaller than the outer diameter of the rigid sleeve 4.2, and the bottom side of the middle of the baffle 6 is provided with an open groove 2 6.2 vertically connected to the circular hole 6.1, and the width of the open groove 2 6.2 is equal to the outer diameter of the core wire 4.3. That is, the bottom of the core wire 4.3 is inserted into the open groove 6.2, so that the rigid sleeve 4.2 at the bottom end of the outer sleeve 4.1 is supported on the inner side wall of the baffle 6, and then the bottom end of the core wire 4.3 is connected to the open groove 1 3.4.3 of the linkage strip 3.4 through the short column 4.4, so as to realize the assembly of the bottom of the brake line 4.

[0038] In summary, when the trolley is moving normally, the position of the oblong block 5.2 is as follows: Fig.10As shown, the core wire 4.3 is in a tensioned state at this time, because the connection line between the connecting hole 5.2.2 and the through hole 5.1.3 is located at the lower side of the rotating shaft 5.3, and the bottom end of the core wire 4.3 pulls the column 3.2 through the linkage strip 3.4, so that the spring 3.5 is in a compressed state, ensuring that the core wire 4.3 is always in a tensioned state. Therefore, the state of the oblong block 5.2 is stabilized, and at the same time, the pulling effect of the bottom end of the core wire 4.3 causes the positioning pin 3.3 to be pulled out from the corresponding positioning sleeve 2.3 to maintain the unlocked state of the wheel 1.2.

[0039] When the trolley needs to be parked for a long time, the oblong block 5.2 is moved by the dial plate 5.2.1 so that the oblong block 5.2 is in the following position: Fig. 9 As shown in the position, at this time, the top end of the core wire 4.3 is relaxed, and under the rebound effect of the spring 3.5, the column 3.2 and the positioning pin 3.3 are pushed out from the outer end of the tube body 3.1, so that the positioning pin 3.3 is inserted into the corresponding positioning sleeve 2.3 to achieve long-term locking of the wheel 1.2.

[0040] The number of the positioning sleeves 2.3 is as large as possible, that is, the positioning sleeves 2.3 are closely arranged along the circumferential direction, so as to facilitate the plug-in matching between the positioning pins 3.3 and the positioning sleeves 2.3.

[0041] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A parking device for a trolley, comprising a trolley body (1) and a brake line (4), wherein an axle sleeve (1.1) is fixed to the bottom of the trolley body (1) in a transverse direction, wheels (1.2) are sleeved at both ends of the axle sleeve (1.1), a trolley frame (1.3) is provided at the top of the rear end of the trolley body (1), the brake line (4) comprises an outer sleeve (4.1) and a core line (4.3) movably sleeved in the inner cavity of the outer sleeve (4.1), characterized in that: Also includes: A positioning plate (2), the positioning plate (2) comprising a plurality of positioning sleeves (2.3) arranged circumferentially on the periphery of the inner axle of the wheel (1.2); A parking mechanism (3), the parking mechanism (3) comprising a tube body (3.1) fixed to both ends of the bottom surface of the shaft sleeve (1.1), a column (3.2) slidably sleeved in the inner cavity of the tube body (3.1) near the outer end, a positioning pin (3.3) fixed to the middle of the outer end surface of the column body (3.2) and sleeved with the positioning sleeve (2.3), a linkage strip (3.4) fixed to the middle of the inner end surface of the column body (3.2), a spring (3.5) sleeved on the outside of the linkage strip (3.4) and a limiting bolt (3.6) sleeved on the inner end of the tube body (3.1) in the radial direction, the middle part of the linkage strip (3.4) is provided with a strip groove (3.4.1) slidably clamped with the limiting bolt (3.6) along its axial direction, and the inner end of the linkage strip (3.4) is connected to the bottom end of the core wire (4.3); A parking switch (5) comprising a sleeve (5.1) fixedly mounted on one side of the hand push frame (1.3) and an oblong block (5.2) whose top end is hinged to the top end of the outer peripheral wall of the sleeve (5.1); a support block (5.2) for positioning the top end of the outer sleeve (4.1) is provided at the bottom end of the outer peripheral wall of the sleeve (5.1). 5.1.1), the top end of the core wire (4.3) is connected to the bottom end of the oblong block (5.2); A baffle (6) is fixed to a position close to the middle of the bottom surface of the shaft sleeve (1.1), and the baffle (6) is used to position the bottom end of the outer sleeve (4.1).

2. A parking device for a trolley according to claim 1, characterized in that: The inner end of the axle of the wheel (1.2) is sleeved on the end of the inner cavity of the axle sleeve (1.1); the positioning plate (2) also includes a disc (2.1) fixed to the middle of the inner side of the wheel (1.2); the middle of the disc (2.1) is provided with an axle hole (2.2) that matches the axle rotation sleeve; the positioning sleeve (2.3) is evenly fixed to the outer edge of the inner wall of the disc (2.1) along the circumferential direction.

3. A parking device for a trolley according to claim 1, characterized in that: Rigid sleeves (4.2) are fixedly mounted on both ends of the outer sleeve (4.1), a connecting ring (4.5) is fixedly mounted on the top end of the core wire (4.3), and a short column (4.4) is fixedly mounted on the bottom end of the core wire (4.3).

4. A parking device for a trolley according to claim 3, characterized in that: A circular hole (6.1) having a hole diameter smaller than the outer diameter of the rigid sleeve (4.2) is provided at the center of the baffle (6), and a second opening groove (6.2) connected to the circular hole (6.1) is vertically provided at the bottom side of the middle portion of the baffle (6), wherein the width of the second opening groove (6.2) is equal to the outer diameter of the core wire (4.3).

5. A parking device for a trolley according to claim 1, characterized in that: The inner end of the tube body (3.1) is provided with a through hole ( 3.1.1), the limiting bolt (3.6) passes through the through hole (3.1.1) and is then fitted with a nut.

6. A parking device for a trolley according to claim 4, characterized in that: The inner end of the linkage strip (3.4) is provided with a bending portion (3.4.2), and the middle of the bending portion (3.4.2) is provided with an open groove (3.4.3) with a width equal to the outer diameter of the core wire (4.3).

7. A parking device for a trolley according to claim 4, characterized in that: The front and rear sides of the middle of the bottom surface of the support block (5.1.1) are respectively provided with circular grooves (5.1.2) that are sleeved and matched with the rigid sleeve (4.2); the upper side of the middle of the circular groove (5.1.2) is provided with a through hole (5.1.3) that is slidably sleeved and matched with the top of the core wire (4.3); the front and rear sides of the support block (5.1.1) are provided with strip-shaped slits (5.1.4) at positions corresponding to the circular groove (5.1.2) and the through hole (5.1.3); an ear plate (5.1.4) is fixed at the top of the sleeve (5.1) and at a position above the middle of the support block (5.1.1). .5), the end of the ear plate (5.1.5) is sleeved with a rotating shaft (5.3), the middle part of the top end of the oblong block (5.2) is provided with a hinge groove (5.2.3) that is snap-fitted and matched with the ear plate (5.1.5), and the front and rear walls of the hinge groove (5.2.3) are rotatably sleeved on the rotating shaft (5.3), the front side of the oblong block (5.2) is provided with a shift plate (5.2.1), the bottom end of the oblong block (5.2) is provided with a connecting hole (5.2.2), and the two ends of the bolt sleeved in the connecting hole (5.2.2) are respectively sleeved with the connecting ring (4.5).

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