Wheel orientation device and cart

Abstract

The embodiment of the present application discloses a wheel orientation device and a cart. The wheel orientation device includes a first mounting seat, a connector and a driving member. The first mounting seat has a mounting cavity and a first mounting hole. At least part of the connector is located in the mounting cavity. In the first position, the connector is connected and fixed to the second mounting seat to limit the relative rotation of the first mounting seat and the second mounting seat. In the second position, the connector and the second mounting seat are released so that the first mounting seat and the second mounting seat can rotate relative to each other. The driving member includes a pushing block located in the first mounting hole. The present application realizes the control of the connector moving to the first position and the second position through the driving member, and the control method is simple. Specifically, the driving member is configured to include a pushing block located in the first mounting hole, which can enhance the interference effect of the pushing block on the connector located in the mounting cavity, so that the connector can be more stably maintained in the first position or the second position.

Description

Technical Field

[0001] The present application relates to the technical field of wheel orientation, and in particular to a wheel orientation device and a cart. Background Art

[0002] In the related art, the wheels of the cart are generally designed as universal wheel structures, and the wheels are rotatably connected to the supporting legs of the cart, so that the wheels of the cart can be switched in any direction during operation. However, when the cart needs to go straight, the universal wheel structure makes it inconvenient to push. Summary of the invention

[0003] The present application provides a wheel orientation device and a cart, which are used to solve the problem in the related art that the cart is generally designed as a universal wheel structure, which is not convenient for the cart to move straight.

[0004] In a first aspect, the present application provides a wheel orientation device, the wheel orientation device is connected between a wheel and a support leg, and the wheel orientation device comprises:

[0005] A first mounting seat, comprising a first surface and a first side surface connected to the first surface, the first surface being provided with a mounting cavity, and the first side surface being provided with a first mounting hole communicating with the mounting cavity;

[0006] a plug-in component, at least partially located in the mounting cavity and having a first position and a second position, wherein in the first position, a portion of the plug-in component protrudes from the first surface and is connected and fixed to the second mounting seat to limit the relative rotation of the first mounting seat and the second mounting seat, and in the second position, the fixation of the plug-in component and the second mounting seat is released to allow the first mounting seat and the second mounting seat to rotate relative to each other;

[0007] The driving member includes a pushing block located in the first mounting hole, wherein the pushing block has a locking position and a releasing position. In the locking position, the connector can move to the first position and abut against the driving member; in the releasing position, the connector can move to the second position and abut against the driving member.

[0008] In some embodiments, the first mounting hole includes a first hole section close to the first surface and a second hole section away from the first surface. In the locked position, the pushing block is located in the first hole section, and in the released position, the pushing block is located in the second hole section.

[0009] Based on the above embodiment: since the pushing block at the locking position is located in the first hole section close to the first surface, it is convenient for the connector at the locking position to move to the first position abutting the driving member to protrude from the first surface; the pushing block at the unlocking position is located in the second hole section away from the first surface, it is convenient for the connector at the unlocking position to move to the second position abutting the driving member to move into the accommodating cavity.

[0010] In some embodiments, the hole wall of the first hole segment includes a first wall facing away from the first surface, and the push block abuts against the first wall in the locked position; and / or

[0011] The hole wall surface of the second hole segment includes a second wall surface facing the first surface, and the pushing block abuts against the second wall surface in the unlocking position.

[0012] Based on the above embodiment: the first wall surface can limit the movement stroke of the pushing block when it moves from the unlocking position to the locking position, so as to improve the accuracy of the pushing block moving to the locking position; the second wall surface can limit the movement stroke of the pushing block when it moves from the locking position to the unlocking position, so as to improve the accuracy of the pushing block moving to the unlocking position; thereby improving the performance of the wheel orientation device.

[0013] In some embodiments, the hole wall of the first hole segment includes a first wall facing away from the first surface, and the push block abuts against the first wall in the locked position.

[0014] The first hole section includes a first stepped hole close to the first surface and a second stepped hole located on a side of the first stepped hole away from the first surface. The first wall surface is formed between the hole wall surface of the first stepped hole and the hole wall surface of the second stepped hole.

[0015] Based on the above embodiment: the first wall surface is formed by a step surface located between two step holes, so that the weight of the wheel alignment device can be reduced.

[0016] In some embodiments, the pushing block includes a first step portion and a second step portion, the second step portion has a first connecting surface, the first connecting surface has a first area and a second area, the first step portion connects the first area, and in the locking position, the first step portion is located in the first step hole, the second step portion is located in the second step hole, and the second area abuts the first wall surface.

[0017] Based on the above embodiment: the pushing block is designed to include a first step portion that can be located in the first step hole and a second step portion that can be located in the second step hole. Compared with positioning the pushing block as a whole in the first step hole or as a whole in the second step hole, the restraining effect of the first mounting hole on the pushing block can be enhanced, and the stability of the pushing block in the locked position can be improved.

[0018] In some embodiments, the hole wall surface of the first stepped hole includes a third wall surface and a fourth wall surface that are oppositely arranged, and the hole wall surface of the second stepped hole includes a fifth wall surface and a sixth wall surface that are oppositely arranged, and the projections of the third wall surface and the fourth wall surface on the first surface are both located between the projection of the fifth wall surface on the first surface and the projection of the sixth wall surface on the first surface.

[0019] Based on the above embodiments: a first wall facing away from the first surface can be formed between the third wall of the first step hole and the fifth wall of the second step hole, and between the fourth wall of the first step hole and the sixth wall of the second step hole. Compared with setting the first wall on one side, the first wall set on both sides has a better limiting effect on the pushing block.

[0020] In some embodiments, in the locked position, the first step portion abuts between the third wall and the fourth wall; and / or, in the locked position, the second step portion abuts between the fifth wall and the sixth wall.

[0021] Based on the above embodiments: under the joint clamping of the third wall surface and the fourth wall surface and / or under the joint clamping of the fifth wall surface and the sixth wall surface, the pushing block can be more stably maintained in the locking position when there is no external force.

[0022] In some embodiments, the connector includes:

[0023] An elastic portion, located in the mounting cavity and abutting against a bottom wall of the mounting cavity;

[0024] The plug-in portion is at least partially located in the mounting cavity and abuts against one end of the elastic portion facing away from the bottom wall. In the first position, the plug-in portion protrudes from the first surface and is connected and fixed to the second mounting seat. In the second position, the fixation of the plug-in portion and the second mounting seat is released; in the locked position, the plug-in portion can move to the first position and abut against the driving member, and in the unlocked position, the plug-in portion can move to the second position and abut against the driving member.

[0025] Based on the above embodiment: the plug connector is designed to include an elastic portion and a plug-in portion, so that the plug-in portion can be directly switched between the first position and the second position under the elastic action of the elastic portion and the action of the pushing block.

[0026] In some embodiments, the plug-in portion includes a first structural portion and a second structural portion, at least a portion of the first structural portion is located in the mounting cavity and abuts against an end of the elastic portion facing away from the bottom wall, the first structural portion protrudes from the first surface and is connected and fixed to the second mounting seat in the first position, and the fixation of the first structural portion and the second mounting seat is released in the second position; the second structural portion is connected to the first structural portion and is located in the first mounting hole, the second structural portion is located on a side of the pushing block away from the first surface, the second structural portion abuts against the driving member in the locked position, and the second structural portion abuts against the driving member in the unlocked position; and / or

[0027] The elastic part includes a spring, a guide column is provided on the bottom wall of the installation cavity, and the spring is sleeved on the periphery of the guide column; and / or

[0028] The elastic portion includes a spring, a guide cavity is provided on a side of the plug-in portion facing the bottom wall, and the spring is located in the guide cavity.

[0029] Based on the above embodiment: the plug-in part is split into a first structural part that moves in the mounting cavity and is connected to or released from the second mounting seat, and a second structural part that moves in the first mounting hole and abuts against the driving member, which can improve the reliability of the interaction between the plug-in part and the second mounting seat and between the plug-in part and the driving member, and improve the performance of the wheel orientation device. The guide column can guide the motion trajectory of the inner side of the spring, and the guide chamber can guide the motion trajectory of the outer side of the spring.

[0030] In some embodiments, the second mounting seat is provided with a limiting groove, and in the first position, part of the connector protrudes from the first surface and is inserted into the limiting groove to limit the relative rotation of the first mounting seat and the second mounting seat, and in the second position, the connector exits the limiting groove to allow the first mounting seat and the second mounting seat to rotate relative to each other.

[0031] Based on the above embodiment: the plug-in component is plugged and fixed with the limiting groove on the second mounting seat to limit the relative rotation of the first mounting seat and the second mounting seat, and the plug-in and fixing method is reliable.

[0032] In a second aspect, the present application provides a cart comprising wheels, support legs and the above-mentioned wheel orienting device.

[0033] The wheel orientation device and cart of the present application can realize the control of the connector moving to the first position and the second position through the driving member, and the control method is simple. Specifically, the driving member is set to include a push block located in the first mounting hole, which can enhance the interference effect of the push block on the connector located in the mounting cavity, so that the connector can be more stably maintained in the first position or the second position. When the connector is in the first position, it can be connected and fixed with the second mounting seat to limit the relative rotation of the first mounting seat and the second mounting seat. When the connector is in the second position, it can be released from the fixation of the second mounting seat to realize the relative rotation of the first mounting seat and the second mounting seat. In this way, one of the first mounting seat and the second mounting seat is installed on the support leg, and the other of the first mounting seat and the second mounting seat is installed on the wheel, so that the relative rotation between the wheel and the support leg can be locked and released, that is, the switch between the rotation and orientation of the wheel can be realized, the switching method is simple, and the application prospect is broad. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1 is a three-dimensional diagram of a partial structure of a cart provided in an embodiment of the present application;

[0036] Figure 2 yes Figure 1 A perspective view of a portion of the structure of the cart is shown;

[0037] Figure 3 yes Figure 2 A perspective exploded view of a portion of a cart is shown;

[0038] Figure 4 yes Figure 3 A cross-sectional view of a portion of the cart is shown with the connector in a first position and the push block in a locked position;

[0039] Figure 5 yes Figure 3 A cross-sectional view of a portion of the cart is shown when the connector is in the second position and the push block is in the unlocking position;

[0040] Figure 6 yes Figure 4 A magnified view of the structure at center A;

[0041] Figure 7 yes Figure 5 A magnified view of the structure at B in the middle;

[0042] Figure 8 yes Figure 2 A three-dimensional view of the first mounting seat, the connector and the driving member in the cart is shown;

[0043] Fig. 9 yes Figure 2 Another perspective exploded view of a portion of the cart is shown;

[0044] Fig.10 yes Figure 8 A magnified view of the structure at C in the middle;

[0045] Fig.11 yes Fig.10 A partial cross-sectional view of the first mounting seat and the push block is shown. DETAILED DESCRIPTION

[0046] In order to make the objectives, technical solutions and advantages of the present application more clear, the embodiments of the present application will be further described in detail below with reference to the accompanying drawings.

[0047] When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Instead, they are only examples of devices and methods consistent with some aspects of the present application as detailed in the attached claims.

[0048] The embodiment of the present application provides a stroller 10. The stroller 10 may be a baby stroller, a supermarket stroller, etc., and the following description will be given by taking a baby stroller as an example.

[0049] See also Figure 1 and Figure 2 The cart 10 may include a wheel orientation device 100, a wheel 200 and a support leg 300, and the wheel orientation device 100 may be connected between the wheel 200 and the support leg 300. It is understood that the cart 10 may also include other structures such as handrails, which are known in the art and will not be described in detail herein.

[0050] The wheel orientation device 100 can be used for switching control between the rotatable and oriented state of the wheel 200. Specifically, the wheel orientation device 100 can be switched between a release state and a lock state, so that when the wheel orientation device 100 is in the release state, the wheel 200 can rotate around the support leg 300 together with at least a part of the wheel orientation device 100, and when the wheel orientation device 100 is switched from the release state to the lock state, the wheel 200 is locked and cannot rotate around the support leg 300.

[0051] See also Figure 3The wheel alignment device 100 may include a first mounting seat 110 and a plug-in connector 120. The first mounting seat 110 may have a first surface 111. The plug-in connector 120 may have a first position protruding from the first surface 111 and connected and fixed to the second mounting seat 130, and a second position released from the second mounting seat 130. In the first position, the plug-in connector 120 is connected and fixed to the second mounting seat 130, which can limit the relative rotation of the first mounting seat 110 and the second mounting seat 130; in the second position, the plug-in connector 120 is released from the second mounting seat 130, so that the first mounting seat 110 and the second mounting seat 130 can rotate relative to each other.

[0052] The connector 120 is designed to switch between the first position and the second position, so that the relative rotation locking and unlocking of the first mounting seat 110 and the second mounting seat 130 can be achieved. In this way, one of the first mounting seat 110 and the second mounting seat 130 is installed on the support leg 300, and the other of the first mounting seat 110 and the second mounting seat 130 is installed on the wheel 200. This can achieve the relative rotation locking and unlocking between the wheel 200 and the support leg 300, that is, the switching between the rotatable and directional position of the wheel 200 can be achieved. The switching method is simple and has broad application prospects.

[0053] See also Figure 4 and Figure 5 The first surface 111 may be provided with a mounting cavity 112, and at least a portion of the connector 120 may be located in the mounting cavity 112. Figure 4 FIG. 2 shows an exploded view of the cart 10 when the connector 120 is in the first position. Figure 5 The exploded view of the cart 10 is shown when the plug-in element 120 is in the second position. Figure 4 and Figure 5 The switching between the first position and the second position can be achieved by adjusting the connector 120 to protrude from the first surface 111 or adjusting the connector 120 to move into the installation cavity 112 .

[0054] It should be noted that the part of the connector 120 in the first position protrudes from the first surface 111 and is connected and fixed to the second mounting seat 130 by abutment fixing, plug fixing, etc. Specifically, in an exemplary solution, the part of the connector 120 in the first position can protrude from the first surface 111 and abut against the second mounting seat 130, so that the friction between the connector 120 and the second mounting seat 130 limits the relative rotation of the first mounting seat 110 and the second mounting seat 130. In this case, the connection stability between the connector 120 and the second mounting seat 130 can be achieved by increasing the friction between the connector 120 and the second mounting seat 130.

[0055] In another exemplary embodiment, the second mounting seat 130 may be provided with a limiting groove 131, and a portion of the connector 120 in the first position may protrude from the first surface 111 and be inserted into the limiting groove 131, so that the connector 120 cooperates with the limiting groove 131 to limit the relative rotation of the first mounting seat 110 and the second mounting seat 130. Compared with the abutment fixing method, the plug-in fixing method of the connector 120 and the limiting groove 131 is more reliable. Optionally, the connector 120 may move in a direction parallel to the rotation axis x of the first mounting seat 110 and the second mounting seat 130 to protrude from the first surface 111, and the limiting groove 131 used in conjunction with the connector 120 may be formed to be concave in a direction parallel to the rotation axis x, so that the connector 120 can move into or out of the limiting groove 131. It is understandable that the connector 120 may also move along a direction intersecting the rotation axis x to protrude from the first surface 111 , etc., and the embodiment of the present application does not limit this.

[0056] The fixing release of the connector 120 and the second mounting seat 130 in the second position can be as follows: the part of the connector 120 protruding from the first surface 111 moves toward the mounting cavity 112 to release the fixing of the connector 120 and the second mounting seat 130. Specifically, when the connector 120 and the second mounting seat 130 are abutted and fixed in the first position, the part of the connector 120 protruding from the first surface 111 in the second position can move toward the mounting cavity 112, so that the friction between the connector 120 and the second mounting seat 130 is smaller than the torque when the second mounting seat 130 and the first mounting seat 110 rotate relative to each other, or a certain gap is provided between the connector 120 and the second mounting seat 130 to eliminate the friction between the connector 120 and the second mounting seat 130. In this way, the connector 120 cannot restrict the relative rotation of the second mounting seat 130 and the first mounting seat 110, and the wheel 200 can achieve a universal wheel effect.

[0057] Specifically, when the connector 120 is plugged and fixed with the second mounting seat 130 in the first position, the connector 120 can be withdrawn from the limiting groove 131 in the second position, so that the connector 120 cannot restrict the relative rotation of the second mounting seat 130 and the first mounting seat 110.

[0058] It is understandable that when the plug connector 120 switches from the first position to the second position, the portion of the plug connector 120 protruding from the first surface 111 may be completely received in the installation cavity 112, or may be partially received in the installation cavity 112 and partially located outside the first surface 111. When the portion of the plug connector 120 protruding from the first surface 111 is completely received in the installation cavity 112, the plug connector 120 no longer constrains the second mounting seat 130, so the first mounting seat 110 and the second mounting seat 130 can smoothly rotate relative to each other.

[0059] It should be noted that the second mounting seat 130 may be a component of the wheel orientation device 100, or a component of the wheel 200 or the support leg 300. When the second mounting seat 130 belongs to the wheel 200, the first mounting seat 110 may be mounted on the support leg 300, and the second mounting seat 130 may be regarded as an environmental feature for defining the wheel orientation device 100. When the second mounting seat 130 belongs to the support leg 300, the first mounting seat 110 may be mounted on the wheel 200, and the second mounting seat 130 may be regarded as an environmental feature for defining the wheel orientation device 100.

[0060] In order to realize the movement of the plug-in component 120 to the first position and the second position, the wheel orientation device 100 may further include a driving component 140. Specifically, the first mounting seat 110 may further include a first side surface 113 connected to the first surface 111, and the first side surface 113 may be provided with a first mounting hole 114 connected to the mounting cavity 112. The driving component 140 may include a pushing block 141 located in the first mounting hole 114, and the pushing block 141 may have a locking position and a releasing position. Figure 4 , Figure 4 FIG. 1 shows an exploded view of the cart 10 when the push block 141 is in a locked position. In the locked position, the plug-in component 120 can move to the first position and abut against the driving component 140. Figure 5 , Figure 5 The exploded view of the cart 10 is shown when the push block 141 is in the unlocking position, in which the connector 120 can move to the second position and abut the driving member 140. The driving member 140 is configured to include the push block 141 located in the first mounting hole 114, which can enhance the interference effect of the push block 141 on the connector 120 located in the mounting cavity 112, so that the connector 120 can be more stably maintained in the first position or the second position.

[0061] In an exemplary embodiment, see Figure 6 and Figure 7 , Figure 6 for Figure 4 A magnified view of the structure at A in the middle. Figure 7 for Figure 5 In the enlarged view of the structure at point B, the first mounting hole 114 may include a first hole section 1141 close to the first surface 111, and a second hole section 1142 away from the first surface 111. The push block 141 may be located in the first hole section 1141 in the locked position, and the push block 141 may be located in the second hole section 1142 in the released position.

[0062] The first mounting hole 114 may be a strip hole, a spiral hole, etc., which is not limited in the present embodiment. When the first mounting hole 114 is a strip hole, the first mounting hole 114 may extend in a direction parallel to the rotation axis x of the first mounting seat 110 and the second mounting seat 130; when the first mounting hole 114 is a spiral hole, the first mounting hole 114 may be arranged around the rotation axis x of the first mounting seat 110 and the second mounting seat 130.

[0063] In order to ensure that the push block 141 can be stably maintained at the locked position, in an exemplary solution, the push block 141 and the first hole section 1141 can be connected by interference. Figure 8 The driving member 140 may further include an operating portion 142 located outside the first mounting seat 110, the operating portion 142 is connected to the pushing block 141, and a locking member 150 may be provided between the operating portion 142 and the first mounting seat 110. Fig. 9 The engaging member 150 may include a first engaging portion 151 and a second engaging portion 152 used in conjunction with each other. The first engaging portion 151 may be disposed on the operating portion 142, and the second engaging portion 152 may be disposed on the first mounting seat 110, so that when the pushing block 141 is in the locked position, the first engaging portion 151 and the second engaging portion 152 may be engaged and connected, thereby enabling the pushing block 141 to be stably maintained in the locked position.

[0064] Similarly, in order to ensure that the push block 141 can be stably maintained at the unlocking position when it is in the unlocking position, in an exemplary solution, the push block 141 and the second hole section 1142 can be connected by interference. In another exemplary solution, the engaging member 150 may include, in addition to the first engaging portion 151 and the second engaging portion 152, a third engaging portion 153 disposed on the first mounting seat 110, so that when the push block 141 is in the unlocking position, the third engaging portion 153 can be engaged with the first engaging portion 151, so that the push block 141 can be stably maintained at the unlocking position. In another exemplary solution, the engaging member 150 may include, in addition to the first engaging portion 151 and the second engaging portion 152, a fourth engaging portion disposed on the operating portion 142, so that when the push block 141 is in the unlocking position, the fourth engaging portion can be engaged with the second engaging portion 152, so that the push block 141 can be stably maintained at the unlocking position. The first engaging portion 151 and the fourth engaging portion may be protrusions, and the second engaging portion 152 and the third engaging portion 153 may be slots. In a direction parallel to the rotation axis x, the spacing between the second engaging portion 152 and the third engaging portion 153 may be greater than or equal to 3 mm and less than or equal to 10 mm.

[0065] The hole wall surface of the first hole section 1141 may include a first wall surface 1143 facing away from the first surface 111, and the push block 141 may abut against the first wall surface 1143 in the locked position; and / or, the hole wall surface of the second hole section 1142 may include a second wall surface (not shown in the figure) facing the first surface 111, and the push block 141 may abut against the second wall surface in the unlocked position. Among them, the first wall surface 1143 may limit the movement stroke of the push block 141 when it moves from the unlocked position to the locked position, so as to improve the accuracy of the push block 141 moving to the locked position; the second wall surface may limit the movement stroke of the push block 141 when it moves from the locked position to the unlocked position, so as to improve the accuracy of the push block 141 moving to the unlocked position; thereby improving the performance of the wheel orientation device 100. Among them, "and / or" describes the association relationship of the associated objects, indicating that there may be three relationships, for example, A and / or B may represent: A exists alone, A and B exist at the same time, and B exists alone.

[0066] Specifically, in order to make the first hole section 1141 have a first wall surface 1143 facing away from the first surface 111, in an exemplary solution, refer to Fig.10 The first hole section 1141 may include a first stepped hole 1144 close to the first surface 111, and a second stepped hole 1145 located on the side of the first stepped hole 1144 away from the first surface 111, and a first wall surface 1143 may be formed between the hole wall surface of the first stepped hole 1144 and the hole wall surface of the second stepped hole 1145. That is, the first wall surface 1143 is formed by the stepped surface located between the two stepped holes, which can reduce the weight of the wheel alignment device 100. It can be understood that the first wall surface 1143 can also be formed without the first mounting hole 114 penetrating the first surface 111, and the embodiment of the present application does not limit the structure of the first mounting hole 114.

[0067] Further optionally, when the first hole section 1141 includes the first stepped hole 1144 and the second stepped hole 1145, the push block 141 may include a first stepped portion 1411 and a second stepped portion 1412, the first stepped portion 1411 may be arranged corresponding to the first stepped hole 1144, and the second stepped portion 1412 may be arranged corresponding to the second stepped hole 1145. Fig.11, the second step portion 1412 may have a first connection surface 1413, the first connection surface 1413 may have a first area 1414 and a second area 1415, the first step portion 1411 may be connected to the first area 1414, the first step portion 1411 may be located in the first step hole 1144 in the locked position, the second step portion 1412 may be located in the second step hole 1145, and the second area 1415 may abut the first wall surface 1143. Designing the push block 141 to include the first step portion 1411 that may be located in the first step hole 1144 and the second step portion 1412 that may be located in the second step hole 1145, compared with positioning the push block 141 as a whole in the first step hole 1144 or as a whole in the second step hole 1145, can enhance the restraining effect of the first mounting hole 114 on the push block 141, and enhance the stability of the push block 141 in the locked position.

[0068] Further optionally, the hole wall surface of the first stepped hole 1144 may include a third wall surface 1146 and a fourth wall surface 1147 arranged opposite to each other, and the hole wall surface of the second stepped hole 1145 may include a fifth wall surface 1148 and a sixth wall surface 1149 arranged opposite to each other, and the projections of the third wall surface 1146 and the fourth wall surface 1147 on the first surface 111 may be located between the projection of the fifth wall surface 1148 on the first surface 111 and the projection of the sixth wall surface 1149 on the first surface 111. In this way, a first wall 1143 facing away from the first surface 111 can be formed between the third wall 1146 of the first stepped hole 1144 and the fifth wall 1148 of the second stepped hole 1145, as well as between the fourth wall 1147 of the first stepped hole 1144 and the sixth wall 1149 of the second stepped hole 1145. Compared with the first wall 1143 set on one side, the first wall 1143 set on both sides has a better limiting effect on the pushing block 141.

[0069] In some exemplary solutions, the first step portion 1411 in the locked position may be pressed against between the third wall surface 1146 and the fourth wall surface 1147; and / or, the second step portion 1412 in the locked position may be pressed against between the fifth wall surface 1148 and the sixth wall surface 1149. Under the joint clamping of the third wall surface 1146 and the fourth wall surface 1147 and / or under the joint clamping of the fifth wall surface 1148 and the sixth wall surface 1149, the push block 141 can be more stably maintained in the locked position when no external force is applied.

[0070] It is understandable that the second wall surface may also be similar to the first wall surface 1143, and the second hole section 1142 may include a third stepped hole close to the first surface 111, and a fourth stepped hole located on the side of the third stepped hole away from the first surface 111, and a second wall surface may be formed between the hole wall surface of the third stepped hole and the hole wall surface of the fourth stepped hole. The push block 141 may include a third stepped portion corresponding to the third stepped hole, and a fourth stepped portion corresponding to the fourth stepped hole. The third stepped portion may be clamped in the third stepped hole, and the fourth stepped portion may be clamped in the fourth stepped hole, etc., and the embodiments of the present application will not be described in detail.

[0071] For some exemplary scenarios, please refer again to Figure 6 The plug-in connector 120 may include an elastic portion 121 and a plug-in portion 122. The elastic portion 121 may be located in the mounting cavity 112 and abut against the bottom wall 1121 of the mounting cavity 112. At least a portion of the plug-in portion 122 may be located in the mounting cavity 112 and abut against one end of the elastic portion 121 away from the bottom wall 1121. In the first position, the plug-in portion 122 may protrude from the first surface 111 and be connected and fixed to the second mounting seat 130. In the second position, the plug-in portion 122 may be released from the fixation with the second mounting seat 130. In the locking position, the plug-in portion 122 may move to the first position and abut against the driving member 140. In the unlocking position, the plug-in portion 122 may move to the second position and abut against the driving member 140. The plug-in connector 120 is designed to include the elastic portion 121 and the plug-in portion 122, so that the plug-in portion 122 may be directly switched between the first position and the second position under the elastic action of the elastic portion 121 and the action of the push block 141.

[0072] Specifically, when the push block 141 moves from the unlocking position to the locking position, the elastic portion 121 will gradually extend under its own elastic action without being limited by the driving member 140. At this time, the plug-in portion 122 abutting against the elastic portion 121 will extend outward from the mounting cavity 112 and be connected and fixed to the second mounting seat 130. After the plug-in portion 122 moves outward to abut against the driving member 140, it will stop moving to maintain the connection and fixation between the plug-in portion 122 and the second mounting seat 130. When the push block 141 moves from the locking position to the unlocking position, please refer to Figure 6 The elastic portion 121 is compressed under the limit of the driving member 140 , and the plug-in portion 122 is driven by the driving member 140 to move into the installation cavity 112 and release the fixation with the second installation seat 130 .

[0073] Further optionally, the plug-in portion 122 may include a first structure portion 1221 and a second structure portion 1222, at least a portion of the first structure portion 1221 may be located in the mounting cavity 112 and abut against one end of the elastic portion 121 away from the bottom wall 1121, the first structure portion 1221 may protrude from the first surface 111 and be connected and fixed to the second mounting seat 130 in the first position, and the first structure portion 1221 may be released from the second mounting seat 130 in the second position. The second structure portion 1222 may be connected to the first structure portion 1221 and located in the first mounting hole 114, the second structure portion 1222 may be located on a side of the push block 141 away from the first surface 111, the second structure portion 1222 may abut against the driving member 140 in the locking position, and the second structure portion 1222 may abut against the driving member 140 in the unlocking position. The plug-in portion 122 is split into a first structural portion 1221 that moves in the mounting cavity 112 and is connected to or released from the second mounting seat 130, and a second structural portion 1222 that moves in the first mounting hole 114 and abuts against the driving member 140. This can improve the reliability of the interaction between the plug-in portion 122 and the second mounting seat 130 and between the plug-in portion 122 and the driving member 140, thereby improving the performance of the wheel orientation device 100.

[0074] In an exemplary solution, in order to facilitate the assembly of the plug-in portion 122 including the first structural portion 1221 and the second structural portion 1222 in the mounting cavity 112 and the first mounting hole 114 of the first mounting seat 110, the first mounting hole 114 can pass through the first surface 111. In this way, when assembling the plug-in portion 122 and the first mounting seat 110, it is convenient to open the opening of the first mounting hole 114 at one end close to the first surface 111 to facilitate the second structural portion 1222 to enter the first mounting hole 114. In addition, the first mounting hole 114 passing through the first surface 111 can also increase the opening area on the first mounting seat 110, reduce the weight of the first mounting seat 110, and thus achieve lightweight wheel alignment device 100.

[0075] It should be noted that the second structure part 1222 may also be partially located in the first mounting hole 114, and partially extend out of the first mounting hole 114 and located outside the first mounting seat 110, so as to increase the size of the second structure part 1222, increase the contact area between the second structure part 1222 and the driving member 140, and enhance the limiting effect of the driving member 140 on the plug-in connector 120. The plug-in connector 122 may also only include the first structure part 1221 without including the second structure part 1222 located in the first mounting hole 114. In this case, a guide groove may be provided on the first structure part 1221, and the push block 141 may further extend into the mounting cavity 112 and be located in the guide groove of the first structure part 1221, so that the push block 141 may be located at the opposite ends of the guide groove when in the locking position and the unlocking position, respectively, so that the end walls at the opposite ends of the guide groove contact the push block 141, so as to achieve the abutment of the plug-in connector 120 with the driving member 140 when in the locking position and the unlocking position. That is, the plug-in portion 122 can select any structure that can interact with the second mounting seat 130 and the driving member 140, and the embodiment of the present application does not limit this.

[0076] The elastic part 121 may be any device with elastic expansion and contraction performance; for example, the elastic part 121 may be a spring, a spring sheet, etc. Preferably, the elastic part 121 may include a spring, and in order to avoid torsional deformation of the spring during expansion and contraction deformation, the wheel orientation device 100 may also include a guide structure for guiding the movement of the spring. For example, a guide column 161 may be provided on the bottom wall 1121 of the installation cavity 112, and the spring may be sleeved on the periphery of the guide column 161; and / or, a guide chamber 1223 may be provided on the side of the plug-in part 122 facing the bottom wall 1121, and the spring may be located in the guide chamber 1223. The guide column 161 may guide the movement trajectory of the inner side of the spring, and the guide chamber 1223 may guide the movement trajectory of the outer side of the spring.

[0077] It should be noted that in order to achieve smooth natural extension movement of the spring, the diameter of the outer circumference of the guide column 161 can be slightly smaller than or equal to the inner ring diameter of the spring, and the diameter of the inner circumference of the guide chamber 1223 can be slightly larger than or equal to the outer ring diameter of the spring.

[0078] The above disclosure is only the preferred embodiment of the present application, which certainly cannot be used to limit the scope of rights of the present application. Therefore, equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. A wheel orientation device, characterized in that: The wheel orientation device is connected between the wheel and the support leg, and the wheel orientation device comprises: A first mounting seat, comprising a first surface and a first side surface connected to the first surface, the first surface being provided with a mounting cavity, and the first side surface being provided with a first mounting hole communicating with the mounting cavity; a plug-in component, at least partially located in the mounting cavity and having a first position and a second position, wherein in the first position, a portion of the plug-in component protrudes from the first surface and is connected and fixed to the second mounting seat to limit the relative rotation of the first mounting seat and the second mounting seat, and in the second position, the fixation of the plug-in component and the second mounting seat is released to allow the first mounting seat and the second mounting seat to rotate relative to each other; The driving member comprises a pushing block located in the first mounting hole, wherein the pushing block has a locking position and a releasing position, wherein in the locking position, the plug-in member can move to the first position and abut against the driving member; in the releasing position, the plug-in member can move to the second position and abut against the driving member; Wherein, the first mounting hole includes a first hole section close to the first surface, the hole wall surface of the first hole section includes a first wall surface facing away from the first surface, the first hole section includes a first stepped hole close to the first surface, and a second stepped hole located on the side of the first stepped hole away from the first surface, the first wall surface is formed between the hole wall surface of the first stepped hole and the hole wall surface of the second stepped hole, and the pushing block is located in the first hole section and abuts against the first wall surface in the locking position.

2. The wheel alignment device according to claim 1, characterized in that: The first mounting hole further comprises a second hole section away from the first surface, and the pushing block is located in the second hole section in the unlocking position.

3. The wheel alignment device according to claim 2, characterized in that: The hole wall surface of the second hole segment includes a second wall surface facing the first surface, and the pushing block abuts against the second wall surface in the unlocking position.

4. The wheel alignment device according to claim 3, characterized in that: The pushing block includes a first step portion and a second step portion, the second step portion has a first connecting surface, the first connecting surface has a first area and a second area, the first step portion connects the first area, and in the locking position, the first step portion is located in the first step hole, the second step portion is located in the second step hole, and the second area abuts the first wall surface.

5. The wheel alignment device according to claim 4, characterized in that: The hole wall surface of the first stepped hole includes a third wall surface and a fourth wall surface that are oppositely arranged, and the hole wall surface of the second stepped hole includes a fifth wall surface and a sixth wall surface that are oppositely arranged, and the projections of the third wall surface and the fourth wall surface on the first surface are both located between the projection of the fifth wall surface on the first surface and the projection of the sixth wall surface on the first surface.

6. The wheel alignment device according to claim 5, characterized in that: In the locked position, the first step portion is pressed against between the third wall surface and the fourth wall surface; and / or, in the locked position, the second step portion is pressed against between the fifth wall surface and the sixth wall surface.

7. The wheel alignment device according to claim 1, characterized in that: The plug-in connector comprises: An elastic portion, located in the mounting cavity and abutting against a bottom wall of the mounting cavity; The plug-in portion is at least partially located in the mounting cavity and abuts against one end of the elastic portion facing away from the bottom wall. In the first position, the plug-in portion protrudes from the first surface and is connected and fixed to the second mounting seat. In the second position, the fixation of the plug-in portion and the second mounting seat is released; in the locked position, the plug-in portion can move to the first position and abut against the driving member, and in the unlocked position, the plug-in portion can move to the second position and abut against the driving member.

8. The wheel alignment device according to claim 7, characterized in that: The plug-in portion includes a first structure portion and a second structure portion, at least a portion of the first structure portion is located in the mounting cavity and abuts against an end of the elastic portion away from the bottom wall, the first structure portion protrudes from the first surface and is connected and fixed to the second mounting seat in the first position, and the fixation of the first structure portion and the second mounting seat is released in the second position; the second structure portion is connected to the first structure portion and is located in the first mounting hole, the second structure portion is located on a side of the push block away from the first surface, the second structure portion abuts against the driving member in the locked position, and the second structure portion abuts against the driving member in the unlocked position; and / or The elastic part includes a spring, a guide column is provided on the bottom wall of the installation cavity, and the spring is sleeved on the periphery of the guide column; and / or The elastic portion includes a spring, a guide cavity is provided on a side of the plug-in portion facing the bottom wall, and the spring is located in the guide cavity.

9. The wheel alignment device according to claim 1, characterized in that: The second mounting seat is provided with a limiting groove. In the first position, part of the connector protrudes from the first surface and is inserted into the limiting groove to limit the relative rotation of the first mounting seat and the second mounting seat. In the second position, the connector exits the limiting groove to allow the first mounting seat and the second mounting seat to rotate relative to each other.

10. A cart, characterized in that: The invention comprises the wheel, the supporting leg and the wheel orientation device according to any one of claims 1 to 9.

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