Supporting base and automobile four-wheel positioning equipment

Abstract

The application relates to the technical field of industrial equipment, and discloses a supporting base and a four-wheel positioning device for a vehicle. The supporting base comprises a base, a first supporting leg with a first roller, a second supporting leg with a second roller and a third supporting leg with a third roller. The top of the base is provided with a fixing part for fixing a component to be supported. The supporting wheel and the third supporting leg are rotatably connected on the two sides of the fixing part along a first horizontal direction, and the first supporting leg and the second supporting leg are rotatably connected on the two sides of the supporting wheel along a second horizontal direction perpendicular to the first horizontal direction. In the folding state or during the folding process, the fixing part is always located in a supporting area formed by the first roller, the second roller, the third roller and the supporting wheel, so that stable support can be provided for the component on the fixing part, the problem of tilting is effectively prevented, and the supporting stability eliminates the need for manual support during the folding process, thereby improving the convenience of operation.

Description

Technical Field

[0001] This application relates to the field of industrial equipment technology, specifically to a support base and a four-wheel alignment device for automobiles. Background Technology

[0002] To ensure a vehicle's driving performance, it is usually necessary to perform a four-wheel alignment check regularly. This involves using four-wheel alignment equipment to detect whether the wheel positions have shifted. The four-wheel alignment equipment is typically mounted on a matching support base, which provides stable support for the equipment and ensures its reliability.

[0003] Currently, to meet market demand for portable automotive four-wheel alignment equipment, some support bases for such equipment have adopted a foldable design. However, existing support bases, when folded, cannot provide stable support for the equipment, making it prone to tipping over and posing a safety hazard. Furthermore, when folding the support base, it is usually necessary to manually support the equipment to prevent it from tipping over, making the folding operation inconvenient. Utility Model Content

[0004] In view of the above problems, this application provides a support base and a four-wheel alignment device for automobiles. The support base can maintain a stable support effect in the folded state and during the folding process, thereby improving the safety performance of the support base and the convenience of folding operation.

[0005] According to one aspect of the embodiments of this application, a support base is provided, comprising: a base, a fixing part provided at the top of the base for fixing a component to be supported, a support wheel rotatably provided at the bottom of the base, the support wheel being located on one side of the fixing part along a first horizontal direction; a first support leg and a second support leg, one end of which is rotatably mounted on the base along a vertical axis, the bottom of the other end of the first support leg being rotatably mounted with a first roller, the bottom of the other end of the second support leg being rotatably mounted with a second roller, the connection positions of the first support leg and the second support leg to the base being located on opposite sides of the support wheel along a second horizontal direction, wherein the second horizontal direction is perpendicular to the first horizontal direction; and a third support leg, one end of which is rotatably connected to one side of the base along a horizontal axis and can be locked relative to the base in an extended state along the first horizontal direction, the bottom of the other end of which is rotatably mounted with a third roller, the connection position of the third support leg to the base being located on the side of the fixing part away from the support wheel along the first horizontal direction.

[0006] In some embodiments, the support wheel is disposed on the bottom of the base on the side opposite to the third support leg.

[0007] In some embodiments, the first support leg and the second support leg may be locked in an unfolded or folded state relative to the base; in the unfolded state, the first support leg, the second support leg and the third support leg are Y-shaped; in the folded state, the first support leg and the second support leg are attached to both sides of the base along the second horizontal direction, and both the first support leg and the second support leg extend along the first horizontal direction.

[0008] In some embodiments, the base is provided with a first connecting portion on one side of the support wheel along the second horizontal direction, and the end of the first support leg opposite to the first roller is provided with two first connecting arms, which are arranged opposite each other in the vertical direction. The first connecting portion extends into the space between the two first connecting arms and is rotatably connected to the two first connecting arms through a first rotating shaft. The first connecting portion is provided with an unfolding insertion hole and a folding insertion hole, which are arranged circumferentially along the first rotating shaft. The first support leg is provided with a retractable first pin, which is used to partially extend into the space between the two first connecting arms and insert into the unfolding insertion hole or the folding insertion hole to lock the first support leg in an unfolded or folded state.

[0009] In some embodiments, a first elastic element is connected between the first pin and the first support leg, the first elastic element being used to provide an extension force to the first pin; a first handle is fixedly connected to the first pin, the first handle portion protruding to the outside of the first support leg.

[0010] In some embodiments, the first connecting portion is provided with a limiting protrusion on both the side of the unfolded socket opposite to the folded socket and the side of the folded socket opposite to the unfolded socket.

[0011] In some embodiments, the third support leg may also be locked in a folded state relative to the base, in which the third support leg extends vertically upward.

[0012] In some embodiments, the base is provided with a second connecting portion on one side along the first horizontal direction, and the third support leg is provided with two second connecting arms at the end opposite to the third roller. The two second connecting arms are arranged opposite each other along the second horizontal direction. The second connecting portion extends into the space between the two second connecting arms and is rotatably connected to the two second connecting arms via a second rotating shaft. A snap-fit ​​hole is provided at the end of the second connecting portion opposite to the base, and a stop is provided on the top surface of the second connecting portion. A second pin is retractably provided inside the third support leg. When the second pin extends out between the two second connecting arms and is inserted into the snap-fit ​​hole, the third support leg is locked in an unfolded state. When the second pin extends out between the two second connecting arms and abuts against the side of the stop facing the support roller, the third support leg is locked in a folded state.

[0013] In some embodiments, a second elastic element is connected between the second pin and the third support leg, the second elastic element being used to provide an extension force to the second pin; a second handle is fixedly connected to the second pin, the second handle portion protruding to the outside of the third support leg.

[0014] According to another aspect of the embodiments of this application, a four-wheel alignment device for automobiles is provided, including a device body and the aforementioned support base, wherein the device body is fixed on the base.

[0015] The support base and four-wheel alignment device provided in this application embodiment include a base, a first support leg, a second support leg, and a third support leg. A fixing part provided on the top of the base is used to fix the required support components. By setting a support wheel on one side of the fixing part and rotatably connecting the first support leg, the second support leg, and the third support leg at a specific position on the base, the fixing part is always within the support range formed by the first roller, the second roller, the third roller, and the support wheel when the support base is folded or during the folding process. This provides stable support for the components on the fixing part, effectively preventing the components from tipping over. Furthermore, due to the stable support, no hand support is required during the folding process, improving the ease of operation.

[0016] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0017] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0018] Figure 1 A perspective view of the support base provided in the embodiment of this application in its unfolded state;

[0019] Figure 2 A perspective view of the support base provided in the embodiment of this application in a folded state;

[0020] Figure 3 A perspective view of the first part of the structure of the support base provided in the embodiments of this application;

[0021] Figure 4 A perspective view of the base in the support base provided in the embodiments of this application;

[0022] Figure 5 A top view of the second part of the support base provided in the embodiment of this application in its unfolded state;

[0023] Figure 6 for Figure 5 A sectional view taken along the AA direction;

[0024] Figure 7 A top view of the second part of the support base structure provided in the embodiments of this application in a folded state;

[0025] Figure 8 for Figure 7 A sectional view taken along the BB direction;

[0026] Figure 9 A perspective view of the four-wheel alignment device for an embodiment of this application in its unfolded state;

[0027] Figure 10 A perspective view of the four-wheel alignment device for automobiles provided in the embodiments of this application in a folded state.

[0028] The reference numerals in the detailed embodiments are as follows:

[0029] 100. Support base;

[0030] 11. Base; 111. Fixing part; 112. Support wheel; 113. First connecting part; 1131. Unfolding insertion hole; 1132. Folding insertion hole; 1133. Limiting protrusion; 114. Second connecting part; 1141. Snap-fit ​​hole; 1142. Stop block;

[0031] 12. First supporting leg; 121. First roller;

[0032] 13. Second support leg; 131. Second roller;

[0033] 14. Third support leg; 141. Third roller;

[0034] 151. First connecting arm; 152. First pivot; 153. First pin; 154. First elastic element; 155. First handle;

[0035] 161. Second connecting arm; 162. Second pivot; 163. Second pin; 164. Second elastic element; 165. Second handle;

[0036] 200. Equipment body;

[0037] 21. Column; 22. Camera assembly;

[0038] 1000. Car four-wheel alignment equipment. Detailed Implementation

[0039] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0041] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0042] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0043] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A exists, A and B exist simultaneously, and B exists. In addition, the character " / " in this document generally indicates that the related objects before and after it have an "or" relationship.

[0044] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0045] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0046] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0047] As car owners place increasing emphasis on vehicle maintenance, the demand for four-wheel alignment inspections is also rising. Inspection agencies are considering providing on-site four-wheel alignment services to improve the user experience. This necessitates transporting four-wheel alignment equipment to the user's location, thus placing higher demands on the portability of four-wheel alignment equipment in today's market.

[0048] Automotive four-wheel alignment equipment is typically mounted on a matching support base. The base provides stable support for the equipment, ensuring its reliability. To meet portability requirements, some support bases for automotive four-wheel alignment equipment feature a foldable design. This saves space during transport by folding the base, eliminating the need to remove the equipment from the base. However, existing support bases, when folded, struggle to provide stable support, making the equipment prone to tipping over during transport, posing a safety hazard. Furthermore, folding the base shifts the equipment's center of gravity, usually requiring manual support to prevent tipping, making the folding process inconvenient.

[0049] Based on the above issues, please refer to Figure 1 and Figure 2 This application provides a support base 100, including a base 11, a first support leg 12, a second support leg 13, and a third support leg 14. A fixing part 111 is provided at the top of the base 11 for fixing the component to be supported. A support wheel 112 is rotatably provided at the bottom of the base 11, located on one side of the fixing part 111 along a first horizontal direction. One end of the first support leg 12 and one end of the second support leg 13 are both rotatably mounted on the base 11 along a vertical axis. A first roller 121 is rotatably provided at the bottom of the other end of the first support leg 12, and a second roller 131 is rotatably provided at the bottom of the other end of the second support leg 13. The connection points between the first support leg 12 and the second support leg 13 and the base 11 are located on opposite sides of the support wheel 112 along a second horizontal direction, wherein the second horizontal direction is perpendicular to the first horizontal direction. One end of the third support leg 14 is rotatably connected to one side of the base 11 along the horizontal axis and can be locked relative to the base 11 in an extended state along the first horizontal direction. The bottom of the other end is rotatably provided with a third roller 141. The connection position between the third support leg 14 and the base 11 is located on the side of the fixing part 111 away from the support wheel 112 along the first horizontal direction.

[0050] It is understood that the component to be supported fixed by the fixing part 111 on the base 11 can be, but is not limited to, the main body of the automotive four-wheel alignment equipment. Depending on the usage scenario of the support base 100, the fixing part 111 can also be used to fix devices such as cameras and fans that need to be supported in a specific position. The fixing part 111 can fix the component to be supported by means of plug-in, snap-fit, threaded connection, etc., as long as the fixing part 111 and the corresponding component to be supported are respectively provided with mutually compatible connection structures.

[0051] A support wheel 112 is provided at the bottom of the base 11 on one side of the fixed part 111 along the first horizontal direction. The support wheel 112 can usually be a caster wheel, so that the rolling direction can be flexibly adjusted according to actual needs when moving the support base 100. Of course, other types of wheels can also be used as long as the connection between the support wheel 112 and the base 11 is stable, provided that the usage requirements are met. The support wheel 112 can provide support on one side of the fixed part 111 along the first horizontal direction, thereby preventing the components fixed on the fixed part 111 from tilting towards the side of the support wheel 112.

[0052] The first support leg 12 and the second support leg 13 are rotatably connected to the base 11 along the vertical axis, and can rotate around their respective connecting axes in the horizontal plane to adjust the support position of the first roller 121 and the second roller 131. The first roller 121 and the second roller 131 can typically be casters, so that the direction of rolling can be flexibly adjusted when the support position is adjusted with the support leg or when the support base 100 is moved. The first support leg 12 and the second support leg 13 are respectively connected to opposite sides of the support wheel 112 along a second horizontal direction. For example, the second horizontal direction can be left and right. The first support leg 12 is connected to the left side of the support wheel 112, and the second support leg 13 is connected to the right side of the support wheel 112. With this arrangement, when the first support leg 12 is unfolded, it can drive the first roller 121 to be adjusted to the left side of the fixed part 111. Similarly, the second support leg 13 can drive the second roller 131 to be adjusted to the right side of the fixed part 111. Thus, the first roller 121 and the second roller 131 provide support on the left and right sides of the fixed part 111 respectively, ensuring that the fixed part 111 is balanced in the left and right directions and preventing the fixed parts on the fixed part 111 from tilting to the left or right.

[0053] The third support leg 14 is rotatably connected to the base 11 along the horizontal axis. In the unfolded state, as shown... Figure 1As shown, the third support leg 14 extends along the first horizontal direction and away from the support wheel 112, so that the third roller 141 is located on the side of the fixing part 111 away from the support wheel 112 along the first horizontal direction. Under the support of the third roller 141, the components fixed on the fixing part 111 can be prevented from tilting towards the side of the third roller 141. Furthermore, the third support leg 14 can be locked in the above-mentioned unfolded state to ensure that in the unfolded state, the third support leg 14 only contacts the support surface through the third roller 141, while the connection between the third support leg 14 and the base 11 remains suspended and will not fall to contact the support surface due to gravity. It is understood that there is no single way to lock the third support leg 14 in the unfolded state. For example, a pin can be used to insert into a socket for limiting, or a snap-fit ​​connection can be used, etc. With this configuration, when the support base 100 is unfolded for use, the fixing part 111 is supported by the support wheel 112 and the third roller 141 on both sides along the first horizontal direction, and the fixing part 111 is supported by the first roller 121 and the second roller 131 on both sides along the second horizontal direction, so that the components fixed on the fixing part 111 will not tip over in the first horizontal direction and the second horizontal direction, thereby ensuring that the support structure of the support base 100 is stable and reliable in the unfolded state.

[0054] When the support base 100 is folded, as Figure 2 As shown, the third support leg 14 can be flipped upward relative to the base 11, thereby saving space on the horizontal plane. To ensure the support stability of the support base 100 in the folded state, the positions of the first support leg 12 and the second support leg 13 in the folded state can be defined, for example, as... Figure 2 As shown, the first support leg 12 and the second support leg 13 can be limited to rotate towards the side of the base 11 that connects to the third support leg 14 when folded, so that the first roller 121 and the second roller 131 are both located on the side of the fixing part 111 away from the support wheel 112 along the first horizontal direction, while keeping the first roller 121 and the second roller 131 always located on opposite sides of the fixing part 111 along the second horizontal direction. With this arrangement, the first roller 121, the second roller 131 and the support wheel 112 together form a triangular support area, and the fixing part 111 is located within this support area, thereby ensuring that even in the folded state, the components fixed on the fixing part 111 will not tip over, maintaining the reliability of the support.

[0055] To ensure the support base 100 maintains stable support during folding, the folding operation can be performed according to a specified sequence. Specifically, first, adjust the first support leg 12 and the second support leg 13 to a position close to the base 11, ensuring that stable support is provided solely by the first roller 121, the second roller 131, and the support wheel 112. Then, fold the third support leg 14 upwards, causing the third roller 141 to leave the support surface, ultimately resulting in the following configuration: Figure 2 The folding configuration is shown. By performing the folding operation according to the above steps, it can be ensured that the support base 100 can always provide stable support for the fixed part on the fixing part 111 during the folding process, ensuring the force balance of the overall structure, and eliminating the need for manual external force to support the fixed part on the fixing part 111, thereby improving the convenience of the folding operation.

[0056] The support base 100 provided in this application embodiment connects the support wheel 112 and the third support leg 14 to the two sides of the fixed part 111 along the first horizontal direction, and connects the first support leg 12 and the second support leg 13 to the two sides of the support wheel 112 along the second horizontal direction perpendicular to the first horizontal direction. This ensures that the fixed part 111 is always within the support area formed by the four points of the first roller 121, the second roller 131, the third roller 141, and the support wheel 112 when the support base 100 is in the folded state or during the folding process. This provides stable support for the components on the fixed part 111, effectively preventing tipping. Furthermore, because the stability of the support structure is guaranteed, there is no need to hold the fixed components on the fixed part 111 during the folding process, making the folding operation more convenient.

[0057] In some embodiments, please refer to Figure 1 and Figure 2 The support wheel 112 is disposed on the bottom of the base 11 on the side opposite to the third support leg 14. For example, if the first horizontal direction can be a front-to-back direction and the third support leg 14 is connected to the rear side of the base 11, then the support wheel 112 can be disposed on the bottom of the base 11 near the front edge. This arrangement can maximize the use of the space of the base 11 in the first horizontal direction, increase the distance between the support wheel 112 and the fixing part 111, thereby extending the lever arm of the support wheel 112 providing support to the fixing part 111, which is beneficial to improving the stability of the support structure.

[0058] It is understandable that the support wheel 112 does not necessarily need to be located near the edge of the base 11. For example, if the support stability requirements are met, the support wheel 112 can also be located in the middle of the bottom of the base 11. It is only necessary to connect the support wheel 112 and the third support leg 14 to the opposite sides of the fixing part 111 along the first horizontal direction. The specific connection position can be flexibly designed according to the actual situation.

[0059] In some embodiments, the first support leg 12 and the second support leg 13 can be locked in an unfolded or folded state relative to the base 11. In the unfolded state, such as Figure 1 As shown, the first support leg 12, the second support leg 13, and the third support leg 14 form a Y-shape. In the folded state, as... Figure 2 As shown, the first support leg 12 and the second support leg 13 are attached to both sides of the base 11 along the second horizontal direction, and both the first support leg 12 and the second support leg 13 extend along the first horizontal direction.

[0060] To achieve position locking of the first support leg 12 and the second support leg 13, taking the first support leg 12 as an example, a socket can be provided on the base 11, and a sliding or retractable pin structure can be connected to the first support leg 12. When the first support leg 12 is adjusted to the correct position, the pin and the socket are engaged, thereby achieving position locking. Alternatively, a snap-fit ​​and slot connection, or a threaded connection, can also be used, as long as position locking is achieved. It is understood that the locking mechanism of the second support leg 13 is similar to that of the first support leg 12, and therefore will not be elaborated further.

[0061] In the above embodiments, by locking the first support leg 12 and the second support leg 13 in the unfolded or folded state, the position of the first support leg 12 and the second support leg 13 is ensured to be stable, effectively avoiding loosening during use or transportation and improving the reliability of the structure. Furthermore, by arranging the first support leg 12, the second support leg 13, and the third support leg 14 in a Y-shape in the unfolded state, the support area formed by the first roller 121, the second roller 131, the third roller 141, and the support wheel 112 has a large coverage area, which is beneficial for providing a more stable support effect. By arranging the first support leg 12 and the second support leg 13 to fit against both sides of the base 11 along the second horizontal direction and extend along the first horizontal direction in the folded state, the space occupied is minimized while the three-point support structure formed by the first roller 121, the second roller 131, and the support wheel 112 can always maintain stable support.

[0062] It is understood that the relative positions of the first support leg 12, the second support leg 13, and the third support leg 14 in the unfolded or folded state are not limited to the positions listed in the above embodiments. For example, in the unfolded state, the first support leg 12, the second support leg 13, and the third support leg 14 may also be arranged in a T-shape; in the folded state, the first support leg 12 and the second support leg 13 may also be arranged with a certain distance from the opposite sides of the base 11, rather than being completely attached to the sides of the base 11, as long as the support base 100 can provide stable support in both the unfolded and folded states.

[0063] To illustrate the specific scheme for locking the positions of the first support leg 12 and the second support leg 13, a detailed description is provided using the first support leg 12 as an example. For some embodiments, please refer to... Figure 1 , Figure 3 and Figure 4 The base 11 has a first connecting portion 113 on one side of the support wheel 112 along the second horizontal direction. Two first connecting arms 151 are provided at the end of the first support leg 12 away from the first roller 121. The two first connecting arms 151 are arranged opposite each other in the vertical direction. The first connecting portion 113 extends between the two first connecting arms 151 and is rotatably connected to the two first connecting arms 151 via a first rotating shaft 152. The first connecting portion 113 has an unfolding insertion hole 1131 and a folding insertion hole 1132, which are arranged circumferentially along the first rotating shaft 152. A first pin 153 is retractably provided inside the first support leg 12. The first pin 153 is used to partially extend between the two first connecting arms 151 and insert into the unfolding insertion hole 1131 or the folding insertion hole 1132 to lock the first support leg 12 in an unfolded or folded state.

[0064] Specifically, when the support base 100 needs to switch from the unfolded state to the folded state, the first pin 153 can be pulled out from the unfolding hole 1131 to release the lock on the first support leg 12. Then, an external force is applied to rotate the first support leg 12 around the first pivot 152 until the first pin 153 is aligned with the folding hole 1132, at which point the first pin 153 is inserted into the folding hole 1132, thus locking the first support leg 12 in the folded state. It is understood that the operation of switching the support base 100 from the folded state to the unfolded state is the same as described above, and therefore will not be repeated.

[0065] To achieve the telescopic movement of the first pin 153, in one embodiment, please refer to... Figure 3 A first elastic element 154 is connected between the first pin 153 and the first support leg 12, and the first elastic element 154 provides an extension force to the first pin 153. A first handle 155 is fixedly connected to the first pin 153, and part of the first handle 155 protrudes to the outside of the first support leg 12. With this configuration, the first handle 155 can slide under the action of an external force applied by the user, and drive the first pin 153 to retract relative to the first support leg 12, that is, the first pin 153 is pulled out from the unfolded insertion hole 1131 or the folded insertion hole 1132. When the external force is removed, the first pin 153 can automatically extend under the action of the elastic element 154, and thus engage with the corresponding unfolded insertion hole 1131 or the folded insertion hole 1132. In this way, the extension and retraction of the first pin 153 can be controlled.

[0066] In another implementation, the design can be based on the snap fastener of a folding umbrella. Specifically, the edges of the openings of the unfolding hole 1131 or the folding hole 1132 can be chamfered, and the end of the first pin 153 used for insertion into the hole can be set to a hemispherical shape. The first elastic element 154 can apply elastic force to press the first pin 153 into the unfolding hole 1131 or the folding hole 1132. When the support base 100 needs to switch states, such as from the unfolded state to the folded state, only a sufficiently large external force needs to be applied to the first support leg 12 to make the first pin 153 slide out along the chamfered edge of the unfolding hole 1131 and retract. When adjusted to the position of the folding hole 1132, the first pin 153 extends under the elastic force of the first elastic element 154 and inserts into the folding hole 1132. With this design, when performing unfolding or folding operations, it is not necessary to pull the first handle 155 to retract the first pin 153, making the operation more convenient.

[0067] It is understandable that the specific implementation scheme for locking the position of the second support leg 13 is the same as that of the first support leg 12. That is, the second support leg 13 can also be provided with a first connecting arm 151, a first pin 153 and other structures, and locking in the unfolded or folded state can be achieved in the same way as the first support leg 12.

[0068] In the above embodiment, by providing two vertically opposite first connecting arms 151 on the first support leg 12, the corresponding first connecting part 113 on the base 11 extends between the two first connecting arms 151, and the first connecting part 113 is connected to the two first connecting arms 151 through the first rotating shaft 152, thereby realizing the rotational connection of the first support leg 12, and the connection structure is relatively compact. At the same time, by providing an unfolding insertion hole 1131 and a folding insertion hole 1132 on the first connecting part 113, and providing a first pin 153 inside the first support leg 12, the first pin 153 is inserted into the insertion hole to realize the position locking of the first support leg 12 and the second support leg 13, thereby ensuring the positional stability of the first support leg 12 and the second support leg 13 in the unfolded state and the folded state.

[0069] In some embodiments, please refer to Figure 4The first connecting portion 113 has a limiting protrusion 1133 on both the side of the unfolding socket 1131 facing away from the folding socket 1132 and the side of the folding socket 1132 facing away from the unfolding socket 1131. Specifically, the limiting protrusion 1133 on the side of the unfolding socket 1131 facing away from the folding socket 1132 can prevent the first pin 153 from being misaligned with the unfolding socket 1131 when the first support leg 12 or the second support leg 13 is switched to the unfolded state, which would cause excessive rotation. The limiting protrusion 1133 abuts against the first support leg 12 or the second support leg 13, restricting further rotation. At this time, it can prompt the operator to correct the position of the first support leg 12 or the second support leg 13, ensuring that the first pin 153 is aligned and inserted into the unfolding socket 1131, so as to lock the first support leg 12 or the second support leg 13 in the unfolded state. It is understandable that the limiting protrusion 1133 located on the side of the folding socket 1132 opposite to the unfolding socket 1131 also has the same function.

[0070] The above embodiment, by setting the limiting protrusion 1133, can effectively prevent the first support leg 12 or the second support leg 13 from over-rotating when the first pin 153 is not aligned with the unfolded insertion hole 1131 or the folded insertion hole 1132. This better ensures that the first support leg 12 and the second support leg 13 are locked in the correct position, and can also avoid structural damage caused by over-rotation, thereby improving the reliability of the structure.

[0071] In some embodiments, please refer to Figure 2 The third support leg 14 can also be locked in a folded state relative to the base 11. In the folded state, the third support leg 14 extends vertically upward. Specifically, when it is necessary to fold the third support leg 14, it can be rotated and flipped up 90° along the horizontal axis and locked to maintain its position. Figure 2 The third support leg 14 is shown as extending vertically upwards. Folding the third support leg 14 in this way can save the space occupied by the third support leg 14 during folding to the greatest extent and improve the compactness of the folding structure.

[0072] In some embodiments, please refer to Figure 1 , Figures 4 to 8The base 11 has a second connecting portion 114 on one side along the first horizontal direction. The third support leg 14 has two second connecting arms 161 at the end opposite to the third roller 141. The two second connecting arms 161 are arranged opposite each other along the second horizontal direction. The second connecting portion 114 extends between the two second connecting arms 161 and is rotatably connected to them via a second rotating shaft 162. A snap-fit ​​hole 1141 is provided at the end of the second connecting portion 114 opposite to the base 11, and a stop block 1142 is provided on the top surface of the second connecting portion 114. A second pin 163 is retractably provided inside the third support leg 14. When the second pin 163 extends between the two second connecting arms 161 and inserts into the snap-fit ​​hole 1141, the third support leg 14 is locked in the unfolded state. When the second pin 163 extends between the two second connecting arms 161 and abuts against the side of the stop block 1142 facing the support roller 112, the third support leg 14 is locked in the folded state.

[0073] Specifically, similar to the rotatable connection between the first connecting part 113 and the first connecting arm 151 via the first rotating shaft 152, the second connecting part 114 extends between the two second connecting arms 161 and is rotatably connected via the second rotating shaft 162. This method enables the connection between the third support leg 14 and the base 11. To lock the third support leg 14 in the extended state, as follows... Figure 5 and Figure 6 As shown, the third support leg 14 can restrict rotation by extending the second pin 163 and engaging it with the snap-fit ​​hole 1141 on the second connecting part 114. To lock the third support leg 14 in a folded state, as shown... Figure 7 and Figure 8 As shown, during the folding process, the third support leg 14 rotates and flips up along the axis of the second pivot 162, causing the second pin 163 to rotate. The end of the second pin 163 extending from the third support leg 14 slides along the surface of the stop block 1142. When the folded position is reached, the second pin 163 slides over the stop block 1142 and extends outward, so that the side of the second pin 163 abuts against the side of the stop block 1142 facing the support wheel 112, thereby restricting the reverse rotation of the third support leg 14. It is understood that the shape of the stop block 1142 can be designed according to the movement path of the second pin 163. For example, the stop block 1142 can be designed as follows: Figure 4 The fan-shaped part shown has an arc surface for sliding the second pin 163, and a flat part for engaging with the second pin 163 to lock it in place.

[0074] In the above embodiment, by providing two second connecting arms 161 on the third support leg 14, the corresponding second connecting part 114 on the base 11 extends between the two second connecting arms 161, and the second connecting part 114 is connected to the two second connecting arms 161 through the second rotating shaft 162, thereby realizing the rotational connection of the third support leg 14, and the connection structure is relatively compact. At the same time, by providing a snap-fit ​​hole 1141 and a stop 1142 on the second connecting part 114, and providing a second pin 163 inside the second support leg 13, the second pin 163 is inserted into the snap-fit ​​hole 1141 to lock the third support leg 14 in the unfolded state, or the second pin 163 abuts against the side of the stop 1142 facing the support wheel 112 to lock the third support leg 14 in the folded state, thereby ensuring the stability of the position of the third support leg 14 in the unfolded and folded states.

[0075] In some embodiments, please refer to Figure 6 and Figure 8 A second elastic element 164 is connected between the second pin 163 and the third support leg 14. The second elastic element 164 is used to provide an extension force to the second pin 163. A second handle 165 is fixedly connected to the second pin 163, and part of the second handle 165 protrudes to the outside of the third support leg 14.

[0076] It is understandable that the specific arrangement, usage and beneficial effects of the second elastic element 164 and the second handle 165 are the same as those of the first elastic element 154 and the first handle 155 mentioned above, so they will not be described again.

[0077] Please see Figure 9 and Figure 10 This application also provides a four-wheel alignment device 1000, including a device body 200 and the aforementioned support base 100, with the device body 200 fixed on the base 11. The device body 200 includes essential components of the four-wheel alignment device 1000, such as a column 21 and a camera assembly 22, for detecting four-wheel alignment of the vehicle. The design can be based on existing technology, ensuring a stable connection between the device body 200 and the fixing part 111 on the base 11.

[0078] The four-wheel alignment device 1000 provided in this application embodiment, by adopting the above-mentioned support base 100, can maintain stable support for the device body 200 in the folded state or during the folding process, thereby ensuring the reliability and portability of the device.

[0079] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way.

Claims

1. A support base, characterized in that, include: A base, the top of which is provided with a fixing part for fixing the component to be supported, and the bottom of which is rotatably provided with a support wheel, the support wheel being located on one side of the fixing part along the first horizontal direction; The first support leg and the second support leg each have one end that rotates along a vertical axis on the base. The bottom of the other end of the first support leg is rotatably provided with a first roller, and the bottom of the other end of the second support leg is rotatably provided with a second roller. The connection positions of the first support leg and the second support leg with the base are respectively located on opposite sides of the support roller along a second horizontal direction, wherein the second horizontal direction is perpendicular to the first horizontal direction. The third support leg has one end rotatably connected to one side of the base along the horizontal axis and can be locked relative to the base in an extended state along the first horizontal direction. The bottom of the other end is rotatably provided with a third roller. The connection position of the third support leg and the base is located on the side of the fixing part away from the support roller along the first horizontal direction.

2. The support base according to claim 1, characterized in that, The support wheel is located on the bottom of the base on the side opposite to the third support leg.

3. The support base according to claim 1, characterized in that, The first support leg and the second support leg can be locked in an unfolded or folded state relative to the base; In the unfolded state, the first support leg, the second support leg, and the third support leg form a Y shape; In the folded state, the first support leg and the second support leg are attached to both sides of the base along the second horizontal direction, and both the first support leg and the second support leg extend along the first horizontal direction.

4. The support base according to claim 3, characterized in that, The base is provided with a first connecting part on one side of the support wheel along the second horizontal direction. The first support leg is provided with two first connecting arms at the end away from the first roller. The two first connecting arms are arranged opposite each other in the vertical direction. The first connecting part extends into the space between the two first connecting arms and is rotatably connected to the two first connecting arms through a first rotating shaft. The first connecting part is provided with an unfolding insertion hole and a folding insertion hole, and the unfolding insertion hole and the folding insertion hole are arranged circumferentially along the first rotating shaft; The first support leg is internally retractably provided with a first pin, which is used to partially extend between the two first connecting arms and insert into the unfolding or folding socket to lock the first support leg in the unfolded or folded state.

5. The support base according to claim 4, characterized in that, A first elastic element is connected between the first pin and the first support leg, and the first elastic element is used to provide an extension force to the first pin; A first handle is fixedly connected to the first pin, and the first handle protrudes to the outside of the first support leg.

6. The support base according to claim 5, characterized in that, The first connecting part is provided with a limiting protrusion on both the side of the unfolded socket away from the folded socket and the side of the folded socket away from the unfolded socket.

7. The support base according to claim 1, characterized in that, The third support leg can also be locked in a folded state relative to the base, in which the third support leg extends vertically upward.

8. The support base according to claim 7, characterized in that, The base is provided with a second connecting part on one side along the first horizontal direction, and the third support leg is provided with two second connecting arms at the end away from the third roller. The two second connecting arms are arranged opposite each other along the second horizontal direction. The second connecting part extends into the space between the two second connecting arms and is rotatably connected to the two second connecting arms through a second rotating shaft. The second connecting part has a snap-fit ​​hole at one end away from the base, and a stop is provided on the top surface of the second connecting part; The third support leg is internally equipped with a retractable second pin; When the second pin extends between the two second connecting arms and is inserted into the snap-fit ​​hole, the third support leg is locked in the unfolded state; When the second pin extends between the two second connecting arms and abuts against the side of the stop block facing the support wheel, the third support leg is locked in a folded state.

9. The support base according to claim 8, characterized in that, A second elastic element is connected between the second pin and the third support leg, and the second elastic element is used to provide an extension force to the second pin; A second handle is fixedly connected to the second pin, and the second handle protrudes to the outside of the third support leg.

10. A four-wheel alignment device for automobiles, characterized in that, It includes a device body and a support base according to any one of claims 1-9, wherein the device body is fixed on the base.

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