A stroller frame and electric camping vehicle

Abstract

This utility model provides a trolley frame and an electric camping vehicle, relating to the field of trolleys. The trolley frame includes a base frame, a pull rod, and a front side frame, with the pull rod connected to the base frame. The front side frame includes a front crossbar and two front vertical bars. The two ends of the front crossbar are respectively connected to the two front vertical bars. The front crossbar is positioned towards the rear of the trolley frame to ensure sufficient spacing between the front crossbar and the pull rod in the axial direction of the trolley frame, forming a receiving area. By providing this receiving area between the pull rod and the front crossbar, the battery can be installed in the receiving area, facilitating battery replacement and easy inspection, without affecting the movement of the pull rod or the addition of a tail support at the rear of the trolley frame. This utility model also provides an electric camping vehicle, including this trolley frame.

Description

Technical Field

[0001] This utility model relates to the field of trolleys, and more specifically, to a trolley frame and an electric camping vehicle. Background Technology

[0002] Electric camping trolleys can carry a large amount of items, and since they use electricity instead of human power, they are very easy to use and are widely used in outdoor activities.

[0003] Existing electric camping trolleys typically have their batteries located at the rear or bottom. A bottom location makes battery replacement and installation inconvenient, while a rear location makes it impossible to monitor battery power during use. Both battery placement methods are inconvenient. Furthermore, placing the battery at the rear prevents the addition of a rear support frame, limiting the trolley's carrying capacity, and also hinders battery replacement. Conversely, placing the battery directly at the front affects the use of the handle, creating a large angle between the handle and the trolley and preventing proper folding. Utility Model Content

[0004] This invention provides a trolley frame and an electric camping vehicle, which can solve the above-mentioned problems.

[0005] The embodiments of this utility model can be implemented as follows:

[0006] An embodiment of this utility model provides a trolley frame, which includes:

[0007] Base frame;

[0008] Tie rod, the tie rod is connected to the base frame;

[0009] The front frame includes a front crossbar and two front vertical bars. The two ends of the front crossbar are connected to the two front vertical bars respectively. The front crossbar is set to the rear side of the trolley frame so that there is sufficient distance between the front crossbar and the pull rod in the axial direction of the trolley frame. The area where this distance is located forms a receiving area for installing the battery.

[0010] Optionally, the front frame also includes two front top connectors, which are respectively connected to the top of the two front vertical bars;

[0011] The front top connector has an extension that extends toward the rear of the trolley frame, and the end of the front crossbar is connected to the extension to ensure sufficient spacing between the front crossbar and the pull bar.

[0012] Optionally, a front sliding seat is slidably fitted on each of the two front vertical bars, and there are two front horizontal bars. The two front horizontal bars are arranged crosswise and rotatably connected. The two ends of the two front horizontal bars are respectively rotatably connected to the front top joint and the front sliding seat on the corresponding side.

[0013] Optionally, the two front crossbars are arranged in a cross configuration to form a scissor unit, and the number of scissor units is at least two, with two or more scissor units arranged side by side.

[0014] Optionally, the front crossbar has a recessed section that protrudes toward the side away from the tie rod and is located in the middle of the front crossbar.

[0015] Optionally, the accommodating area is provided with a battery box, and the back of the battery box is provided with a quick connector, which is detachably connected to the front crossbar.

[0016] Optionally, the battery box includes an upper cover and a lower cover, which are connected to form a limiting cavity for placing the battery;

[0017] A sealing gasket is provided at the bottom of the limiting cavity, which is used to seal the wiring port.

[0018] Optionally, the upper cover is provided with a shock-absorbing pad, which is located on the side near the pull rod.

[0019] Optionally, an elastic element is provided on the wall of the limiting cavity, which is used to press the battery inside the limiting cavity.

[0020] An embodiment of this utility model also provides an electric camping vehicle, including a cart frame.

[0021] The beneficial effects of this utility model embodiment:

[0022] The trolley frame includes a base frame, a pull rod, and a front side frame. The pull rod is connected to the base frame. The front side frame includes a front crossbar and two front vertical bars. The two ends of the front crossbar are respectively connected to the two front vertical bars. The front crossbar is offset towards the rear of the trolley frame to ensure sufficient spacing between the front crossbar and the pull rod in the axial direction of the trolley frame. This spacing forms a receiving area for installing the battery. Compared to existing trolleys, this embodiment moves the front crossbar towards the rear of the trolley frame, resulting in a larger spacing between the front crossbar and the pull rod. This creates a receiving area between the pull rod and the front crossbar, where the battery can be installed. The battery installed in the receiving area does not affect the normal use of the pull rod and facilitates battery replacement, inspection, and viewing. Placing the battery at the front of the trolley does not affect the addition of a tail support at the rear of the trolley.

[0023] The electric campervan includes a cart frame, which has all the functions of a cart frame. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of the trolley frame provided in an embodiment of the present utility model;

[0026] Figure 2 This is a schematic diagram of a trolley frame with an extension frame added to the rear end, provided in an embodiment of the present invention.

[0027] Figure 3 This is a schematic diagram of a trolley frame with an additional extension frame at the rear, provided in an embodiment of the present invention.

[0028] Figure 4 The front crossbar provided in the embodiments of this utility model is intended to have a recessed section;

[0029] Figure 5 This is a schematic diagram of the battery box and front frame provided in an embodiment of the present invention;

[0030] Figure 6 This is a front view of the battery box provided in an embodiment of the present invention;

[0031] Figure 7 This is a schematic diagram of the back of the battery box provided in an embodiment of this utility model.

[0032] Icons: 1-Base frame; 10-Base rod; 11-Bottom connector; 2-Pull rod; 3-Front frame; 30-Front crossbar; 301-Recessed section; 302-Pin; 31-Front vertical rod; 32-Accommodation area; 33-Front top connector; 331-Extension; 34-Front sliding seat; 4-Battery box; 40-Upper box cover; 41-Lower box cover; 42-Quick connector; 421-Slide groove; 43-Limiting cavity; 44-Sealing gasket; 45-Elastic element; 46-Anti-collision pad; 5-Rear frame; 50-Rear crossbar; 51-Rear vertical rod; 52-Rear top connector; 53-Rear sliding seat; 6-Left side frame; 60-Left side tube; 7-Right side frame; 70-Right side tube; 8-Battery. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0034] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0035] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0036] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0037] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0038] The terms “comprising,” “including,” or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase “comprising one…” does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0039] Unless otherwise explicitly specified and limited, terms such as "setup" and "connection" should be interpreted broadly. For example, "connection" 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 a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0040] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.

[0041] Electric camping trolleys are widely used in outdoor activities. Powered by batteries, they offer greater ease of transport and can carry heavier items. However, existing electric camping trolleys typically have their batteries located at the rear or bottom. When the battery is at the bottom, installing, replacing, or checking it requires lifting the bottom panel, which is even more time-consuming and laborious if heavy objects are placed on it. When the battery is at the rear, it's inconvenient to monitor the battery level, especially on slopes. Users must find a suitable spot to brake before reaching the rear to check the battery status. Furthermore, placing the battery at the rear limits the possibility of adding extension structures such as a tipper or tailgate.

[0042] In view of the above-mentioned problems of existing electric camping carts, the present invention provides a cart frame and an electric camping cart. The cart frame can be applied to, but is not limited to, folding electric camping carts and panel electric camping carts. The cart frame and the electric camping cart can solve the above-mentioned problems, and will be described in detail below.

[0043] Please refer to Figures 1 to 3 The trolley frame includes a base frame 1, a pull rod 2, and a front frame 3. The pull rod 2 is connected to the base frame 1, and the front frame 3 is also connected to the base frame 1. The base frame 1 is used to carry items, and the front frame 3 is used to block items at the front of the trolley frame to prevent items from falling off. The pull rod 2 makes it convenient for users to push and pull the entire trolley frame.

[0044] The front frame 3 includes a front crossbar 30 and two front vertical bars 31. The two front vertical bars 31 are spaced apart and connected to the base frame 1. The two ends of the front crossbar 30 are respectively connected to the two front vertical bars 31. The front crossbar 30 is offset towards the rear of the trolley frame to ensure sufficient distance between the front crossbar 30 and the pull rod 2 in the axial direction of the trolley frame. The area where this distance is located forms a receiving area 32, which is located between the two front vertical bars 31. The battery 8 can be installed in the receiving area 32, thus facilitating the replacement or installation of the battery 8. Alternatively, the battery 8's charge and status can be checked at any time during use. Compared to placing the battery 8 at the bottom and rear of the trolley frame, this embodiment places the battery 8 on the front side of the trolley frame, making it more convenient to replace the battery 8 or check its status at any time. At the same time, compared to existing trolleys, this embodiment has a larger gap between the front crossbar 30 and the pull rod 2 of the trolley frame to form a receiving area 32 for installing the battery 8. Installing the battery 8 in the receiving area 32 will not affect the normal rotation / movement of the pull rod 2, nor will it affect the addition of a tail bracket at the rear of the trolley.

[0045] If the battery 8 is placed directly behind the pull rod 2 without adjusting the front crossbar 30, the battery 8 will affect the movement of the pull rod 2, increasing the angle between the pull rod 2 and the front vertical bar 31, thus increasing the volume and space occupied during placement. In this embodiment, the front crossbar 30 is moved towards the rear of the trolley to form a receiving area 32. The battery 8 is installed within the receiving area 32, spaced apart from the pull rod 2. The battery 8 is outside the range of motion of the pull rod 2, so the movement / rotation of the pull rod 2 is not affected by the battery 8 and can still move / rotate within its original angle range, thus not changing the overall size and space occupied by the trolley frame.

[0046] Furthermore, without altering the original volume of the stroller frame, the front crossbar 30 is moved away from the pull rod 2 to obtain a sufficiently large accommodating area 32, ensuring that the installed battery 8 is not limited by the size of the accommodating area 32, thus guaranteeing sufficient battery life.

[0047] The stroller frame in this embodiment is a folding stroller frame, which will be referred to below as... Figures 1 to 3 The following explanation uses a folding stroller frame as an example. For a flat stroller frame, you can directly refer to the setting of the folding stroller frame, as its setting principle is the same.

[0048] Continue to refer to Figures 1 to 3The trolley frame includes a base frame 1, a front frame 3, a rear frame 5, a left frame 6, and a right frame 7. The front frame 3 and the rear frame 5 are arranged opposite each other and are respectively connected to the front and rear of the base frame 1. The left frame 6 and the right frame 7 are arranged opposite each other and are respectively located on the left and right sides of the trolley frame. The two ends of the left frame 6 are respectively connected to the front frame 3 and the rear frame 5, and the two ends of the right frame 7 are also respectively connected to the front frame 3 and the rear frame 5.

[0049] The base frame 1 includes four base rods 10, four bottom joints 11, and one central joint. The central joint has four hinge positions. One end of each of the four base rods 10 is hinged to one of the four hinge positions of the central joint, and the other end of each of the four base rods 10 is connected to one of the four bottom joints 11. Each bottom joint 11 has at least two hinge positions. Furthermore, each of the four bottom joints 11 is connected to a roller.

[0050] The front frame 3 includes a front crossbar 30, two front vertical bars 31, and two front top connectors 33. The bottom ends of the two front vertical bars 31 are inserted into the bottom connector 11, and the two front top connectors 33 are respectively fixed to the top ends of the two front vertical bars 31. The front top connector 33 has an extension 331 that extends toward the rear of the trolley frame. The extension 331 has a hinge position, and the end of the front crossbar 30 is hinged to the hinge position on the extension 331, so that the front crossbar 30 and the pull rod 2 are left with sufficient distance.

[0051] There are two front crossbars 30, which are crossed at the middle and connected by a pin 302. Each of the two front vertical bars 31 is slidably fitted with a front sliding seat 34. The two ends of each front crossbar 30 are rotatably connected to the corresponding front top connector 33 and the front sliding seat 34, respectively. This allows the two front vertical bars 31 to be opened or closed when the two front crossbars 30 are rotated, meeting the requirement for a foldable frame.

[0052] Optionally, the two front crossbars 30 are arranged in a cross configuration to form a scissor lift unit. The front frame 3 may include one or more scissor lift units. When there are multiple scissor lift units, the multiple scissor lift units are arranged in parallel.

[0053] The rear frame 5 includes a rear crossbar 50, two rear vertical bars 51, and two rear top connectors 52. The bottom ends of the two rear vertical bars 51 are inserted into the bottom connectors 11, and the two rear top connectors 52 are respectively fixed to the top ends of the two rear vertical bars 51. The two rear top connectors 52 have at least two hinge positions, and the two ends of the rear crossbar 50 are respectively connected to the two rear top connectors 52.

[0054] There are two rear crossbars 50, which are crossed at the middle and connected by a pin. The two rear crossbars 50 are rotatably connected. Each of the two rear vertical bars 51 is slidably fitted with a rear sliding seat 53. The two ends of the two rear crossbars 50 are rotatably connected to the corresponding rear top joint 52 and the rear sliding seat 53, respectively. This allows the two rear vertical bars 51 to be opened or closed when the two rear crossbars 50 are rotated, thus meeting the requirement of foldable frame.

[0055] The left side frame 6 consists of two or four left side tubes 60 arranged in a cross pattern. The ends of the two left side tubes 60 closest to the front side frame 3 are rotatably connected to the hinge position of the front top joint 33 and the hinge position of the front sliding seat 34, respectively. The ends of the two left side tubes 60 closest to the rear side frame 5 are rotatably connected to the hinge position of the rear top joint 52 and the hinge position of the rear sliding seat 53, thereby realizing the folding and unfolding of the front vertical rod 31 and the rear vertical rod 51.

[0056] The right side frame 7 is composed of two or four right side tubes 70 arranged in a cross pattern. Since the right side frame 7 has the same structure as the left side frame 6, it will not be described in detail.

[0057] Continue to refer to Figures 5 to 7 The battery 8 is placed in the accommodating area 32 between the pull rod 2 and the front crossbar 30. In order to protect the battery 8, a battery box 4 is installed in the accommodating area 32, and the battery 8 is installed in the battery box 4.

[0058] The battery box 4 includes an upper cover 40 and a lower cover 41. The side of the upper cover 40 is connected to the side of the lower cover 41, and the upper cover 40 and the lower cover 41 are connected to form a limiting cavity 43, in which the battery 8 is installed. A quick connector 42 is connected to the back of the lower cover 41 by screws or bolts. The quick connector 42 is a flat plate with a vertical groove 421. Pins 302 passing through the two front crossbars 30 are inserted into the groove 421. When the trolley frame is folded or unfolded, the pins 302 can slide along the groove 421. Of course, the quick connector 42 can also be connected to the front crossbars 30 by a detachable connection method such as screws or bolts.

[0059] A spring element 45 is provided on the side of the lower cover 41 near the upper cover 40. When the battery 8 is inserted into the limiting cavity 43, the spring element 45 squeezes the battery 8, thereby pressing the battery 8 firmly against the inner wall of the limiting cavity 43 and preventing the battery 8 from shaking inside the limiting cavity 43. The spring element 45 can be made of a rubber block with high elasticity.

[0060] The upper cover 40 is equipped with a shock absorber 46, which is located on the side near the pull rod 2 to prevent the pull rod 2 from hitting the battery box 4 when it swings. The shock absorber 46 can reduce the impact on the battery 8. The shock absorber 46 can be made of polyurethane or sponge strips and wrap around the entire exterior of the upper cover 40 or the battery box 4.

[0061] The bottom of the limiting cavity 43 is provided with a wiring port for easy insertion of wiring harness. A sealing gasket 44 is provided at the insertion port to seal the wiring port and prevent rainwater from seeping into the battery box 4.

[0062] Of course, to achieve even greater battery life, the size of the storage area 32 can be further increased; for example, a curved rod can be used as the front crossbar 30. Figure 4 As shown, the bending rod has a recessed section 301 that protrudes away from the pull rod 2 and is located in the middle of the bending rod, thereby providing a larger accommodating area 32 in which a larger battery 8 can be placed, thus providing a longer battery life.

[0063] It is worth mentioning that, in this embodiment, the axial direction of the trolley frame refers to the length direction of the trolley, and the pull rod 2 is located on the front side of the length direction of the trolley frame (i.e., the other side opposite to the tail of the trolley).

[0064] In this embodiment of the utility model, the trolley frame has the battery 8 located on the front side, making it more convenient to install, replace, or check the status of the battery 8. At the same time, the front crossbar 30 is moved towards the rear of the trolley, so that the front crossbar 30 and the pull rod 2 have sufficient distance in the axial direction of the trolley frame, forming a receiving area 32. The battery 8 is installed in the receiving area 32, which can ensure the battery life without changing the original volume of the trolley frame. Moreover, the battery 8 will not affect the movement of the pull rod 2, nor will it affect the addition of a tail support body at the rear of the trolley.

[0065] An embodiment of this utility model also provides an electric camping vehicle, including the aforementioned cart frame, which has all the functions of a cart frame.

[0066] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A stroller frame, characterized in that, include: Base frame (1); Tie rod (2), which is connected to the base frame (1); The front frame (3) includes a front crossbar (30) and two front vertical bars (31). The two ends of the front crossbar (30) are respectively connected to the two front vertical bars (31). The front crossbar (30) is set to the rear side of the trolley frame so that the front crossbar (30) and the pull rod (2) have sufficient distance in the axial direction of the trolley frame. The area where the distance is located forms an accommodating area (32), which is used to install the battery (8).

2. The trolley frame according to claim 1, characterized in that, The front frame (3) also includes two front top connectors (33), which are respectively connected to the top ends of the two front vertical bars (31); The front top connector (33) has an extension (331) that extends toward the rear of the trolley frame, and the end of the front crossbar (30) is connected to the extension (331) so that the front crossbar (30) and the pull rod (2) have sufficient spacing.

3. The trolley frame according to claim 2, characterized in that, Both of the two front vertical rods (31) are slidably fitted with front sliding seats (34). There are two front horizontal rods (30). The two front horizontal rods (30) are arranged crosswise and rotatably connected. The two ends of the two front horizontal rods (30) are rotatably connected to the front top joint (33) and the front sliding seat (34) on the corresponding side, respectively.

4. The trolley frame according to claim 3, characterized in that, The two front crossbars (30) are arranged in a cross configuration to form a scissor unit. The number of scissor units is at least two, and two or more scissor units are arranged side by side.

5. The trolley frame according to claim 1, characterized in that, The front crossbar (30) has a recessed section (301) that protrudes toward the side away from the pull rod (2) and is located in the middle of the front crossbar (30).

6. The trolley frame according to claim 1, characterized in that, The accommodating area (32) is provided with a battery box (4), and a quick connector (42) is provided on the back of the battery box (4). The quick connector (42) is detachably connected to the front crossbar (30).

7. The trolley frame according to claim 6, characterized in that, The battery box (4) includes an upper cover (40) and a lower cover (41). The upper cover (40) and the lower cover (41) are connected to form a limiting cavity (43), which is used to place the battery (8). A sealing gasket (44) is provided at the bottom of the limiting cavity (43), and the sealing gasket (44) is used to seal the wiring port.

8. The trolley frame according to claim 7, characterized in that, The upper cover (40) is provided with a shock absorber (46), which is located on the side near the pull rod (2).

9. The trolley frame according to claim 7, characterized in that, An elastic element (45) is provided on the wall surface of the limiting cavity (43), and the elastic element (45) is used to press the battery (8) inside the limiting cavity (43).

10. An electric camping vehicle, characterized in that, Includes the cart frame as described in any one of claims 1 to 9.

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