Anti-rollover safety trolley

Abstract

The utility model provides an anti-rollover safety trolley which comprises a folding frame and an anti-rollover handle assembly installed on the folding frame, the anti-rollover handle assembly comprises a first connecting rod connected with the folding frame and a second connecting rod connected with the first connecting rod, a handle is installed at the upper end of the second connecting rod, and the first connecting rod is connected with the folding frame. The first connecting rod and the second connecting rod are in circumferential running fit; the anti-rollover handle assembly is configured to enable the handle and the second connecting rod to circumferentially rotate relative to the first connecting rod when the folding frame is rollover, so that accidents caused by rollover of the wrist of an operator and the handle along with the folding frame during rollover are avoided; the anti-rollover safety trolley overcomes the defect that an existing folding trolley is low in safety.

Description

Technical Field

[0001] The utility model relates to the field of foldable trolleys, in particular to a safety trolley which can prevent rollover. Background Art

[0002] With the improvement of living standards, more and more people like to drive to outdoor activities, and they will carry a lot of picnic food and outdoor equipment when driving. However, the car can generally only be driven to the parking place, and the remaining distance mostly needs to be completed on foot. It is very inconvenient for people to carry so many things for outdoor hiking. Now, trolleys that can be folded and placed in the trunk are also sold on the market. When in use, the trolley can be opened to carry picnic food and outdoor equipment, which is convenient for people to carry.

[0003] For example, patent number CN218229045U discloses a retractable foldable trolley. Figure 1 and Figure 4 The invention discloses an elliptical telescopic rod, which comprises an outer rod and an inner rod. A spring pin is installed on the inner rod, and a limiting hole matched with the spring pin is installed on the outer rod. When the elliptical telescopic rod is unfolded, the spring pin is inserted into the limiting hole for axial limiting. In this way, due to the use of the elliptical telescopic rod and the setting of the limiting hole on the outer rod, the inner rod cannot rotate relative to the outer rod. When the vehicle body rolls over, the vehicle body will roll over with the human body, and the safety of use is low. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] The problem to be solved by the utility model is to provide a safety trolley which is anti-rollover, so as to overcome the defect of low safety of the existing folding trolleys.

[0006] (II) Technical solution

[0007] To solve the technical problem, the utility model provides an anti-rollover safety trolley, comprising a folding frame and an anti-rollover handle assembly installed on the folding frame, the anti-rollover handle assembly comprising a first connecting rod connected to the folding frame and a second connecting rod connected to the first connecting rod, a handle is installed on the upper end of the second connecting rod, and the first connecting rod and the second connecting rod cooperate in circumferential rotation; the anti-rollover handle assembly is configured so that when the folding frame rolls over, the handle and the second connecting rod will rotate circumferentially relative to the first connecting rod, so as to avoid accidents caused by the operator's wrist and the handle following the rollover of the folding frame during rollover.

[0008] In some embodiments, one end of the second connecting rod is telescopically mounted inside the first connecting rod, and the second connecting rod and the first connecting rod form a circular telescopic rod; a limiter is provided on the second connecting rod, and the limiter is used to limit the second connecting rod from telescoping along the axial direction of the first connecting rod. In some embodiments, the limiter is a spring pin, and the spring pin is telescopically mounted on the second connecting rod, and a through hole for the spring pin to telescope is provided at one end of the second connecting rod close to the first connecting rod. A spring is placed between the spring pin and the second connecting rod, and the spring always makes the spring pin have a tendency to extend to the outside of the second connecting rod.

[0009] In some embodiments, the limiting member is a limiting flange, the limiting flange is arranged at one end of the second connecting rod placed inside the first connecting rod, and a stop surface that cooperates with the limiting flange to limit the position is arranged inside the first connecting rod.

[0010] In some embodiments, the anti-rollover handle assembly further comprises a swing seat connected to the folding frame, the swing seat is located at the lower end of the circular telescopic rod, and the lower end of the first connecting rod is sleeved in the swing seat. Both sides of the swing seat are connected to the folding frame through connecting rods, one end of the connecting rod is hinged to the swing seat, and the other end is hinged to the folding frame, and both sides of the swing seat are provided with through grooves for the connecting rod to move.

[0011] In some embodiments, the folding frame includes a base frame and supporting columns arranged at four corners of the base frame, a side frame is installed between two adjacent supporting columns, and casters are installed at the bottom of the supporting columns.

[0012] The side frame includes at least one group of X-shaped folding frames, the upper end of one side of the X-shaped folding frame connected to the supporting column is hinged to the corresponding supporting column, and the lower end thereof is slidably hinged to the corresponding supporting column.

[0013] In some embodiments, the base frame includes a central seat, four bottom rods hinged to the central seat at one end, and a support rod, the other end of the bottom rod is hinged to the corresponding support column; one end of the support rod is hinged to the central seat, and the other end is connected to the lower end center of the corresponding side frame through a connecting rope to disperse the support force of the base frame. The bottom rod includes a telescopic rod A and a telescopic rod B that are slidably sleeved with each other, a linkage rod is hinged on the central seat, and the end of the linkage rod is hinged to the telescopic rod A.

[0014] (III) Beneficial effects

[0015] The utility model provides an anti-rollover safety trolley, which is provided with an anti-rollover handle assembly, adopts a circular telescopic rod, the second connecting rod can rotate along the circumference of the first connecting rod, and the limiter is only used to limit the second connecting rod to extend and retract along the axial direction of the first connecting rod, and will not affect the circumferential rotation of the second connecting rod; when the folding frame rolls over, the second connecting rod can rotate relative to the first connecting rod, thereby preventing the folding frame and the human body from overturning, thereby improving the safety of use; and overcomes the defect of low safety of existing folding trolleys. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 A three-dimensional diagram of a safety trolley that prevents rollover according to the utility model;

[0018] Figure 2 It is a structural schematic diagram of an anti-rollover handle assembly for an anti-rollover safety trolley of the utility model;

[0019] Figure 3 A three-dimensional diagram of an anti-rollover handle assembly for an anti-rollover safety trolley according to the utility model;

[0020] Figure 4 This is a cross-sectional view of an anti-rollover handle assembly of an anti-rollover safety trolley of the utility model using a spring pin;

[0021] Figure 5 for Figure 4 A magnified view of part A;

[0022] Figure 6 This is a cross-sectional view of an anti-rollover handle assembly of an anti-rollover safety trolley of the utility model using a limiting flange;

[0023] Figure 7 for Figure 6 A magnified view of part B;

[0024] Figure 8 A three-dimensional diagram of a folding frame of a safety trolley that prevents rollover according to the utility model;

[0025] Fig. 9 This is a schematic structural diagram of a side frame of a safety trolley that prevents rollover according to the utility model;

[0026] Fig.10 This is a schematic structural diagram of a safety trolley chassis that prevents rollover according to the utility model;

[0027] Fig.11 It is a three-dimensional diagram of the connection between the center seat, the bottom rod and the supporting rod of the anti-rollover safety trolley of the utility model;

[0028] The names of the components corresponding to the various figure marks in the figure are: 1. Folding frame; 11. Base frame; 12. Support column; 13. Side frame; 14. Caster; 111. Center seat; 112. Bottom rod; 113. Support rod; 114. Connecting rope; 131. X-shaped folding frame; 1121. Telescopic rod A; 1122. Telescopic rod B; 1123. Linking rod; 2. Anti-rollover handle assembly; 21. Circular telescopic rod; 22. Handle; 23. Swing seat; 24. Connecting rod; 211. First connecting rod; 212. Second connecting rod; 213. Limiting member; 214. Perforation; 215. Spring; 216. Stop surface; 231. Through groove. DETAILED DESCRIPTION

[0029] The present application is described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] The following describes the implementation methods of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can also be implemented or applied through other different specific implementation methods, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, in the absence of conflict, the following embodiments and the features in the embodiments can be combined with each other. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work belong to the scope of protection of the present application.

[0031] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on the present application, it should be understood by those skilled in the art that an aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspect described herein can be used to implement the device and / or practice the method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement this device and / or practice this method.

[0032] It should also be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present application. The drawings only show components related to the present application rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0033] Additionally, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, it will be understood by those skilled in the art that the examples can be practiced without these specific details.

[0034] The technical solutions provided by various embodiments of the present application are described below in conjunction with the accompanying drawings.

[0035] See also Figures 1 to 11 The utility model provides a rollover-proof safety trolley, comprising a folding frame 1 and an anti-rollover handle assembly 2 mounted on the folding frame 1. The anti-rollover handle assembly 2 is used to keep the human body in its original state when the folding frame 1 overturns, so as to prevent the folding frame 1 from overturning with the human body. The anti-rollover handle assembly 2 comprises a first connecting rod 211 connected to the folding frame 1 and a second connecting rod 212 connected to the first connecting rod 211. A handle 22 is mounted on the upper end of the second connecting rod 212. The first connecting rod 211 and the second connecting rod 212 cooperate in circumferential rotation. The anti-rollover handle assembly 2 is configured such that when the folding frame 1 rolls over, the handle 22 and the second connecting rod 212 will rotate circumferentially relative to the first connecting rod 211, so as to avoid accidents caused by the operator's wrist and the handle 22 following the folding frame 1 overturning when the folding frame 1 rolls over.

[0036] In some embodiments, Figure 2 and Figure 3 As shown, one end of the second connecting rod 212 is telescopically installed in the first connecting rod 211, and the second connecting rod 212 and the first connecting rod 211 form a circular telescopic rod 21; a limiting member 213 is provided on the second connecting rod 212, and the limiting member 213 is used to limit the second connecting rod 212 to be telescopic along the axial direction of the first connecting rod 211. The telescopic rod structure is convenient for folding and storage, and it is convenient to realize the relative circumferential rotation of the two connecting rods.

[0037] In some embodiments, Figures 3 to 5As shown, the limiting member 213 is a spring pin, which is telescopically mounted on the second connecting rod 212. A through hole 214 for the spring pin to be telescopic is provided at one end of the second connecting rod 212 close to the first connecting rod 211. The spring pin is placed against the end of the first connecting rod 211 to limit the axial position of the second connecting rod 212, so as to ensure that the circumferential rotation of the second connecting rod 212 is not affected. Among them, a flange is provided at one end of the second connecting rod 212 placed in the first connecting rod 211 to prevent the second connecting rod 212 from being completely pulled out of the first connecting rod 211. A spring 215 is placed between the spring pin and the second connecting rod 212, and the spring 215 always makes the spring pin have a tendency to extend to the outside of the second connecting rod 212.

[0038] In some embodiments, Figure 6 and Figure 7 As shown, the limiting member 213 is a limiting flange, which is arranged at one end of the second connecting rod 212 placed inside the first connecting rod 211, and a stop surface 216 that cooperates with the limiting flange to limit the position is arranged inside the first connecting rod 211. The limiting flange cooperates with the stop surface 216 to limit the axial position of the second connecting rod 212, and the circumferential rotation of the second connecting rod 212 is not affected.

[0039] In some embodiments, Figures 1 to 3 As shown, the anti-rollover handle assembly 2 also includes a swing seat 23 connected to the folding frame 1, the swing seat 23 is located at the lower end of the circular telescopic rod 21, and the lower end of the first connecting rod 211 is sleeved in the swing seat 23. Both sides of the swing seat 23 are connected to the folding frame 1 through connecting rods 24, one end of the connecting rod 24 is hinged to the swing seat 23, and the other end is hinged to the folding frame 1, and both sides of the swing seat 23 are provided with through grooves 231 for the movement of the connecting rod 24. The through grooves 231 are provided to ensure that the swing seat 23 can swing left and right, and the flexibility is higher.

[0040] In some embodiments, Figure 8 As shown, the folding frame 1 includes a base frame 11 and support columns 12 arranged at the four corners of the base frame 11, a side frame 13 is installed between two adjacent support columns 12, and a caster 14 is installed at the bottom of the support column 12.

[0041] like Fig. 9 As shown, the side frame 13 includes at least one set of X-shaped folding frames 131, the upper end of one side of the X-shaped folding frame 131 connected to the supporting column 12 is hinged to the corresponding supporting column 12, and the lower end thereof is slidably hinged to the corresponding supporting column 12; that is, a hinge seat is slidably sleeved on the supporting column 12, and the lower end of one side of the X-shaped folding frame 131 is hinged to the hinge seat. Among them, the X-shaped folding frame 131 is a prior art, and will not be described in detail in this embodiment.

[0042] In some embodiments, Fig.10As shown, the base frame 11 includes a central seat 111, four bottom rods 112 hinged at one end to the central seat 111, and a supporting rod 113, the other end of the bottom rod 112 is hinged to the corresponding supporting column 12; one end of the supporting rod 113 is hinged to the central seat 111, and the other end is connected to the lower end center of the corresponding side frame 13 through a connecting rope 114, so that the supporting force of the base frame 11 is dispersed. When folding, the central seat is lifted upward, and the four bottom rods drive the four supporting columns to fold toward the middle, and drive the X-shaped folding frame to fold and fold.

[0043] like Fig.11 As shown, the bottom rod 112 includes a telescopic rod A 1121 and a telescopic rod B 1122 which are slidably sleeved with each other, and a linkage rod 1123 is hinged on the center seat 111, and the end of the linkage rod 1123 is hinged to the telescopic rod A 1121. When folding, the center seat is lifted upward, and the linkage rod compresses the telescopic rod A and the telescopic rod B, so that the height of the center seat after folding is reduced.

[0044] The same and similar parts between the various embodiments in this specification can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0045] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A rollover-proof safety trolley, characterized in that: The invention comprises a folding frame (1) and an anti-rollover handle assembly (2) mounted on the folding frame (1), wherein the anti-rollover handle assembly (2) comprises a first connecting rod (211) connected to the folding frame (1) and a second connecting rod (212) connected to the first connecting rod (211), a handle (22) being mounted on the upper end of the second connecting rod (212), and the first connecting rod (211) and the second connecting rod (212) are circumferentially rotatably matched. The anti-rollover handle assembly (2) is configured such that when the folding frame (1) rolls over, the handle (22) and the second connecting rod (212) will rotate circumferentially relative to the first connecting rod (211), thereby preventing an operator's wrist and the handle (22) from rolling over with the folding frame (1) and causing an accident.

2. The anti-rollover safety trolley according to claim 1, characterized in that: One end of the second connecting rod (212) is telescopically installed in the first connecting rod (211), and the second connecting rod (212) and the first connecting rod (211) form a circular telescopic rod (21); a limiting member (213) is provided on the second connecting rod (212), and the limiting member (213) is used to limit the second connecting rod (212) from telescoping along the axial direction of the first connecting rod (211).

3. The rollover-resistant safety trolley according to claim 2, characterized in that: The limiting member (213) is a spring pin, which is telescopically mounted on the second connecting rod (212); one end of the second connecting rod (212) close to the first connecting rod (211) is provided with a through hole (214) for the spring pin to be telescopically mounted.

4. The rollover-resistant safety trolley according to claim 3, characterized in that: A spring (215) is disposed between the spring pin and the second connecting rod (212), and the spring (215) always causes the spring pin to have a movement tendency of extending to the outside of the second connecting rod (212).

5. The rollover-resistant safety trolley according to claim 2, characterized in that: The limiting member (213) is a limiting flange, and the limiting flange is arranged at one end of the second connecting rod (212) placed inside the first connecting rod (211). A stop surface (216) cooperating with the limiting flange to limit the position is arranged inside the first connecting rod (211).

6. The rollover-resistant safety trolley according to claim 2, characterized in that: The anti-rollover handle assembly (2) further comprises a swing seat (23) connected to the folding frame (1); the swing seat (23) is located at the lower end of the circular telescopic rod (21); and the lower end of the first connecting rod (211) is sleeved in the swing seat (23).

7. The rollover-resistant safety trolley according to claim 6, characterized in that: Both sides of the swing seat (23) are connected to the folding frame (1) via connecting rods (24); one end of the connecting rod (24) is hinged to the swing seat (23), and the other end is hinged to the folding frame (1); both sides of the swing seat (23) are provided with through grooves (231) for the connecting rod (24) to move.

8. The rollover-resistant safety trolley according to claim 1, characterized in that: The folding frame (1) comprises a base frame (11) and supporting columns (12) arranged at four corners of the base frame (11), a side frame (13) is installed between two adjacent supporting columns (12), and casters (14) are installed at the bottom of the supporting columns (12); The side frame (13) comprises at least one group of X-shaped folding frames (131), wherein the upper end of one side of the X-shaped folding frame (131) connected to the supporting column (12) is hinged to the corresponding supporting column (12), and the lower end thereof is slidably hinged to the corresponding supporting column (12).

9. The rollover-resistant safety trolley according to claim 8, characterized in that: The base frame (11) comprises a central seat (111), four base rods (112) one end of which is hinged to the central seat (111), and a supporting rod (113); the other end of the base rod (112) is hinged to the corresponding supporting column (12); one end of the supporting rod (113) is hinged to the central seat (111), and the other end is connected to the lower end center of the corresponding side frame (13) through a connecting rope (114), so that the supporting force of the base frame (11) is dispersed.

10. The anti-rollover safety trolley according to claim 9, characterized in that: The bottom rod (112) comprises a telescopic rod A (1121) and a telescopic rod B (1122) which are slidably sleeved with each other, and a linkage rod (1123) is hingedly connected to the central seat (111), and the end of the linkage rod (1123) is hingedly connected to the telescopic rod A (1121).

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