Locking mechanism and trolley

Abstract

The utility model relates to the technical field of baby products, and provides a locking mechanism and a trolley. The locking mechanism can comprise a first connecting part, a second connecting part, a rotating shaft, a locking piece, a first elastic piece, a first unlocking piece and a second unlocking piece; the first connecting part is opposite to the second connecting part, the first connecting part comprises a first groove, the second connecting part comprises a second groove, and a through hole is formed in the bottom wall of the second groove; the locking piece is provided with an unlocking position and a locking position; the first unlocking piece comprises an abutting column and a limiting column, and the abutting column is arranged in the through hole in a penetrating mode and abuts against the locking piece; the second unlocking piece is provided with a long-strip-shaped hole and a limiting hole, the rotating shaft penetrates through the long-strip-shaped hole, the limiting column is matched with the limiting hole, the second unlocking piece is provided with a first position and a second position, when the second unlocking piece is located at the first position, the limiting hole right faces the through hole, and when the second unlocking piece is located at the second position, the limiting hole and the through hole are staggered. According to the unlocking mechanism provided by the embodiment, the safety coefficient of the trolley can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of trolleys, and in particular to a locking mechanism and a trolley. Background Art

[0002] In the prior art, there are many kinds of baby strollers, among which most of them have an adjustment structure, which can adjust the baby stroller to different states.

[0003] The locking mechanism used in the existing adjustment structure is relatively simple, and there is a certain possibility of accidental touch when in use. From a safety perspective, there are safety hazards both in daily use and in the placement process. Utility Model Content

[0004] In order to solve the above technical problems or at least partially solve the above technical problems, the present disclosure provides a locking mechanism and a trolley.

[0005] In the first aspect, the present application discloses a locking mechanism, which may include: a first connecting part, a second connecting part, a rotating shaft, a locking piece, a first elastic piece, a first unlocking piece and a second unlocking piece; the first connecting part and the second connecting part are arranged opposite to each other, the first connecting part includes a first groove opening toward the second connecting part, the second connecting part includes a second groove opening toward the first groove, and the bottom wall of the second groove is provided with a through hole; the rotating shaft passes through the first connecting part and the second connecting part, and the second connecting part can rotate around the rotating shaft relative to the first connecting part; the locking piece is adapted to both the first groove and the second groove, the first elastic piece is clamped between the bottom wall of the first groove and the locking piece, the locking piece has an unlocking position and a locking position, and when the locking piece is in the unlocking position, the locking piece is located in the first groove The second connecting part can be rotated relative to the first connecting part, and when the locking piece is in the locking position, part of the locking piece extends out of the first groove and extends into the second groove, and the second connecting part is locked relative to the first connecting part; the first unlocking piece includes an abutment column and a limiting column, the abutment column is passed through the through hole and abuts with the locking piece, the limiting column is opposite to the through hole and can pass through the through hole; the second unlocking piece is provided with an elongated hole and a limiting hole, the rotating shaft is passed through the elongated hole, the limiting column is adapted to the limiting hole, the second unlocking piece has a first position and a second position, when the second unlocking piece is in the first position, the limiting hole is opposite to the through hole, the limiting column can pass through the through hole and the limiting hole, and when the second unlocking piece is in the second position, the limiting hole and the through hole are staggered; wherein, the extension direction of the elongated hole is consistent with the moving direction of the second unlocking piece.

[0006] In this way, by setting the first unlocking member and the second unlocking member, the rotation between the push rod and the auxiliary rod can only be realized after secondary unlocking. First, the second unlocking member is adjusted to the first position so that the limiting column can pass through the limiting hole and the through hole, and then the first unlocking member is pushed. The abutment column of the first unlocking member pushes the locking member, and the locking member compresses the spring, so that the locking member moves to the unlocking position, and then the second connecting part is rotated; when the second connecting part rotates to the target position, the spring pushes the locking member to move to the locking position, so that the second connecting part is locked relative to the position of the first connecting part, and then the second unlocking member is moved to the second position, thereby improving the safety factor of the product.

[0007] In some embodiments of the present application, a plug-in hole is provided on the circumferential outer wall of the second connecting portion, the second unlocking member is passed through the plug-in hole, and the second unlocking member includes a hand-held portion, at least part of which extends out of the plug-in hole.

[0008] In some embodiments of the present application, the hand-held portion includes a limit block, and when the second unlocking member is located at the first position, the limit block abuts against the circumferential outer wall of the second connecting portion.

[0009] In some embodiments of the present application, the trolley further includes: a second elastic member, which is clamped between the limiting block and the circumferential outer wall of the second connecting portion.

[0010] In some embodiments of the present application, the limiting block is provided with a placement groove opening toward the circumferential side of the second connecting portion, and the second elastic member is clamped between the circumferential outer wall of the second connecting portion and the bottom wall of the placement groove.

[0011] In some embodiments of the present application, a mating groove is provided on the circumferential outer wall of the second connecting portion, the plug-in hole is located at the bottom wall of the mating groove, the hand-held portion is mated with the mating groove, and at least part of the hand-held portion extends out of the mating groove.

[0012] In some embodiments of the present application, an outer surface of the handheld portion is provided with an anti-slip structure.

[0013] In some embodiments of the present application, the locking member is formed in a gear shape.

[0014] In some embodiments of the present application, the first unlocking member further includes a pressing portion, which is connected to an end of the abutting column facing away from the locking member and is located outside the through hole.

[0015] In some embodiments of the present application, the trolley further includes: an anti-slip portion connected to one end of the rotating shaft close to the second connecting portion, and a projection of the anti-slip portion on the second unlocking member is at least partially located outside the contour of the elongated hole.

[0016] In a second aspect, the present application discloses a trolley, comprising: a pushing rod, a pushing rod and a locking mechanism as described in any of the above schemes, wherein the first connecting portion of the locking mechanism is arranged on the pushing rod, and the second connecting portion of the locking mechanism is arranged on the auxiliary rod.

[0017] Among them, the technical effects brought about by any design scheme in the second aspect can refer to the technical effects brought about by different design methods in the first aspect, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0019] In order to more clearly illustrate the embodiments of the present invention 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, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0020] Figure 1 A schematic diagram of a trolley provided for some embodiments of the present application;

[0021] Figure 2 for Figure 1 A cross-sectional view of the first connecting portion and the second connecting portion shown in ;

[0022] Figure 3 for Figure 2 A schematic diagram of the first unlocking member shown in ;

[0023] Figure 4 for Figure 1 A schematic diagram of the second connecting portion shown in ;

[0024] Figure 5 for Figure 2 A schematic diagram of the rotating shaft and the second unlocking member shown in ;

[0025] Figure 6 for Figure 2 Schematic diagram of the locking member shown in .

[0026] Reference numerals:

[0027] 100. trolley; 101. push rod; 102. auxiliary rod;

[0028] 110. first connecting portion; 111. first groove;

[0029] 120, second connection portion; 121, second groove; 122, through hole; 1221, first through hole; 1222, second through hole; 123, plug-in hole; 124, matching groove;

[0030] 130. Rotating shaft; 131. Anti-slip portion;

[0031] 140, locking member;

[0032] 150, a first elastic member;

[0033] 160, first unlocking member; 161, abutting column; 162, limiting column; 163, pressing portion;

[0034] 170, second unlocking member; 171, long hole; 172, limiting hole; 173, hand-held part; 1731, limiting block; 1732, anti-slip structure; 1733, placement groove;

[0035] 180. A second elastic member. DETAILED DESCRIPTION

[0036] In order to more clearly understand the above-mentioned objectives, features and advantages of the present disclosure, the scheme of the present disclosure will be further described below. It should be noted that the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0037] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. Among them, "fixed connection" means that the two are connected to each other and the relative position relationship after the connection remains unchanged. In addition, the directional terms mentioned in the embodiments of the present application, such as "inside", "outside", etc., are only references to the directions of the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present application, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0038] In the following description, many specific details are set forth to facilitate a full understanding of the present disclosure, but the present disclosure may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present disclosure, rather than all of the embodiments.

[0039] In the prior art, there are many kinds of baby strollers, among which most of them have an adjustment structure, which can adjust the baby stroller to different states.

[0040] The locking mechanism used in the existing adjustment structure is relatively simple, and there is a certain possibility of accidental touch when in use. From a safety perspective, there are safety hazards both in daily use and in the placement process.

[0041] To solve the above technical problems, please refer to Figure 1 The present application discloses a trolley 100, which may include: a pushing rod 101 and an auxiliary rod 102. The auxiliary rod 102 may rotate relative to the pushing rod 101 to adjust the relative position between the auxiliary rod 102 and the pushing rod 101, thereby realizing the switching of the trolley 100 between different states. Specifically, the auxiliary rod 102 and the pushing rod 101 are rotationally connected through a locking mechanism.

[0042] See also Figure 1 and Figure 2 The locking mechanism includes a first connecting portion 110 , a second connecting portion 120 , a rotating shaft 130 , a locking member 140 , a first elastic member 150 , a first unlocking member 160 and a second unlocking member 170 .

[0043] Specifically, a first connecting portion 110 is provided on the push rod 101, a second connecting portion 120 opposite to the first connecting portion 110 is provided on the auxiliary rod 102, a first groove 111 is provided on the first connecting portion 110, and a second groove 121 is provided on the second connecting portion 120. The opening direction of the first groove 111 is toward the second connecting portion 120, and the opening direction of the second groove 121 is toward the first connecting portion 110. The opening of the first groove 111 is opposite to the opening of the second groove 121, and the bottom wall of the second groove 121 is provided with a through hole 122.

[0044] In order to realize the rotation and locking between the first connecting portion 110 and the second connecting portion 120, please refer to Figures 2 to 5 The trolley 100 may further include: a rotating shaft 130 , a locking member 140 , a first elastic member 150 , a first unlocking member 160 and a second unlocking member 170 .

[0045] For details, please refer to Figure 2 The rotation axis 130 passes through the first connection part 110 and the second connection part 120 , and the second connection part 120 can rotate around the rotation axis 130 relative to the first connection part 110 .

[0046] Specifically, the rotating shaft 130 extends in the direction from the first connecting part 110 to the second connecting part 120, and is sequentially arranged in the first connecting part 110 and the second connecting part 120, wherein the rotating shaft 130 can be fixed to the first connecting part 110 and rotatably connected to the second connecting part 120 at the same time; the rotating shaft 130 can also be fixed to the second connecting part 120 and rotatably connected to the first connecting part 110 at the same time; the rotating shaft 130 can also be fixed to the first connecting part 110 and rotatably connected to the second connecting part 120 at the same time.

[0047] The rotation shaft 130 and the first connection part 110 may be fixed by gluing or integrally formed. The rotation shaft 130 and the second connection part 120 may be fixed by gluing or integrally formed.

[0048] Please continue reading Figure 2 The locking member 140 is adapted to the first groove 111 and the second groove 121 . Specifically, the opening of the first groove 111 is opposite to the opening of the second groove 121 . The locking member 140 can move between the first groove 111 and the second groove 121 , and the locking member 140 can be completely located in the first groove 111 .

[0049] The first elastic member 150 may be a spring, and the first elastic member 150 is sandwiched between the bottom wall of the first groove 111 and the locking member 140, and the first elastic member 150 is in a compressed state. Therefore, the first elastic member 150 always applies a thrust toward the second groove 121 to the locking member 140, and the locking member 140 always has a tendency to move toward the second groove 121. The locking member 140 has an unlocking position and a locking position. When the locking member 140 is in the unlocking position, the locking member 140 is located in the first groove 111, and the second connecting member 121 is locked. Part 120 can rotate relative to the first connecting part 110. When the locking member 140 is located at the locking position, part of the locking member 140 extends out of the first groove 111 and extends into the second groove 121. That is to say, at this time, a part of the locking member 140 is located in the first groove 111, and the other part is located in the second groove 121. The first groove 111 and the second groove 121 are connected by the locking member 140, so that the first connecting part 110 and the second connecting part 120 are integrated, and the second connecting part 120 is locked relative to the first connecting part 110.

[0050] See also Figure 2 and Figure 3The first unlocking member 160 may include an abutting column 161 and a limiting column 162. The abutting column 161 is disposed in the through hole 122 and abuts against the locking member 140. The limiting column 162 is directly opposite to the through hole 122 and can pass through the through hole 122. Therefore, the abutting column 161 abutting against the locking member 140 is provided on the first unlocking member 160, and a thrust toward the locking member 140 is applied toward the first unlocking member 160. The thrust from the locked position toward the unlocking position is applied to the locking member 140 through the abutting column 161, so that the locking member 140 can move from the locked position to the unlocking position. Therefore, by providing the first elastic member 150 and the first unlocking member 160, the magnitude of the thrust applied to the first unlocking member 160 is adjusted, so that the locking member 140 can be switched between the locked position and the unlocked position.

[0051] For details, please continue to refer to Figure 3 and Figure 4 The first unlocking member 160 may include a pressing portion 163 , which is connected to one end of the abutting column 161 away from the locking member 140 and is located outside the through hole 122 . The locking member 140 is pushed by applying pressure to the pressing portion 163 .

[0052] Please continue to read Figure 3 and Figure 4 The pressing portion 163 may be formed into a disc shape, the central axis of the rotating shaft 130 coincides with the central axis of the disc shape, the number of the abutting columns 161 may be equal, and the plurality of abutting columns 161 are arranged at intervals around the central axis of the pressing portion 163. Preferably, the number of the abutting columns 161 is an even number, and the abutting columns 161 are stacked and distributed about the central axis of the pressing portion 163 to ensure the force balance of the locking member 140 and prevent the locking member 140 from tilting and getting stuck. Specifically, the number of the abutting columns 161 may be 2, 4, 6, etc.

[0053] The number of the limiting pillars 162 may also be one or more.

[0054] In some embodiments of this application, please continue to refer to Figure 3 and Figure 4 The through hole 122 may include a first through hole 1221 and a second through hole 1222, the first through hole 1221 cooperates with the abutment column 161, and the second through hole 1222 cooperates with the limiting column 162. Specifically, the number of the first through holes 1221 may be one or more, and the first through holes 1221 correspond to the abutment column 161 one-to-one, and the number of the second through holes 1222 may be one or more, and the second through holes 1222 correspond to the limiting column 162 one-to-one.

[0055] See also Figure 2 and Figure 5The second unlocking member 170 is provided with a long hole 171 and a limiting hole 172. The rotating shaft 130 is passed through the long hole 171. The limiting column 162 is adapted to the limiting hole 172. The second unlocking member 170 has a first position and a second position. When the second unlocking member 170 is located at the first position, the limiting hole 172 is opposite to the through hole 122. When the second unlocking member 170 is located at the second position, the limiting hole 172 is staggered with the through hole 122.

[0056] The number of the limiting holes 172 may be one or more, and the number of the limiting holes 172 is consistent with the number of the limiting posts 162 . Specifically, the number of the limiting posts 162 and the number of the limiting holes 172 are both two.

[0057] It should be noted that when the limiting hole 172 is opposite to the through hole 122, the limiting column 162 can pass through the through hole 122 and the limiting hole 172, then the first unlocking member 160 can move toward the locking member 140, and applying a thrust to the first unlocking member 160 can push the locking member 140 from the locked position to the unlocked position.

[0058] When the limiting hole 172 is offset from the through hole 122, the limiting column 162 abuts against the second unlocking member 170, the limiting column 162 cannot pass through the through hole 122 and the limiting hole 172, and the second unlocking member 170 cannot apply a thrust to the locking member 140. At this time, the user cannot move the locking member 140 from the locked position to the unlocked position, so the state of the trolley 100 cannot be changed. Therefore, by providing the first unlocking member 160 and the second unlocking member 170, a double lock is achieved between the push rod 101 and the auxiliary rod 102, thereby avoiding the possibility of accidental touch by the user, improving the safety factor of the trolley 100, and reducing the occurrence of safety hazards.

[0059] The extending direction of the elongated hole 171 is consistent with the moving direction of the second locking member 140 . By providing the elongated hole 171 , the second locking member 140 can avoid the rotating shaft 130 when moving between the first position and the second position.

[0060] For other embodiments of this application, please continue to refer to Figure 5 The limiting hole 172 can also be formed as a long hole 171, thereby reducing the precision of the cooperation between the limiting column 162 and the limiting hole 172 and reducing the friction between the limiting column 162 and the limiting hole 172.

[0061] In this way, by setting the first unlocking member 160 and the second unlocking member 170, the rotation between the push rod 101 and the auxiliary rod 102 can only be realized after a second unlocking. First, the second unlocking member 170 is adjusted to the first position so that the limiting column 162 can pass through the limiting hole 172 and the through hole 122, and then the first unlocking member 160 is pushed. The abutting column 161 of the first unlocking member 160 pushes the locking member 140. The locking member 140 compresses the spring so that the locking member 140 moves to the unlocking position, and then the second connecting part 120 is rotated; when the second connecting part 120 is rotated to the target position, the spring pushes the locking member 140 to move to the locking position, so that the second connecting part 120 is locked relative to the first connecting part 110, and then the second unlocking member 170 is moved to the second position, thereby improving the safety factor of the product.

[0062] In some embodiments of this application, please refer to Figure 2 and Figure 6 The locking member 140 is formed in a gear shape, the shapes of the first groove 111 and the second groove 121 are adapted to the shape of the locking member 140, and the rotating shaft 130 is passed through the central axis of the locking member 140. Taking the angle between adjacent teeth of the gear-shaped locking member 140 as 15° as an example, the minimum angle at which the second connecting portion 120 can rotate relative to the first connecting portion 110 is 15°.

[0063] In some other embodiments, the angle between adjacent teeth of the gear-shaped locking member 140 is 30°, and the minimum angle at which the second connecting portion 120 can rotate relative to the first connecting portion 110 is 30°.

[0064] In some embodiments of this application, please refer to Figure 2 A plug hole 123 is provided on the circumferential outer wall of the second connecting portion 120, and the second unlocking member 170 is inserted through the plug hole 123. The second unlocking member 170 includes a hand-holding portion 173, and at least part of the hand-holding portion 173 extends out of the plug hole 123. In this way, the user can apply a pushing force or a pulling force to the second unlocking member 170 through the hand-holding portion 173 to realize the movement of the second unlocking member 170 between the first position and the second position.

[0065] In some embodiments of this application, please refer to Figure 5 The hand-held part 173 may include a limit block 1731. When the second unlocking member 170 is located at the first position, the limit block 1731 abuts against the circumferential outer wall of the second connecting part 120. Therefore, by providing the limit block 1731, the movement position of the second unlocking member 170 can be prevented from exceeding the position between the first position and the second position, thereby ensuring the stability of the movement path of the second unlocking member 170 and avoiding hard collision between the second unlocking member 170 and other components, thereby improving the service life of the entire device.

[0066] In some embodiments of this application, please refer to Figure 2 and Figure 5 The trolley 100 may further include a second elastic member 180, which is clamped between the limit block 1731 and the second connecting portion 120, wherein the second elastic member 180 may be a spring, which applies a thrust to the hand-held portion 173 to enable the second unlocking member 170 to move from the second position toward the first position, and compresses the spring, thereby enabling the second unlocking member 170 to move from the first position toward the second position through the thrust of the spring.

[0067] In some embodiments of this application, please refer to Figure 2 The limiting block 1731 is provided with a placement groove 1733 with an opening toward the circumferential outer wall of the second connection part 120, and the second elastic member 180 is sandwiched between the circumferential outer wall of the second connection part 120 and the bottom wall of the placement groove 1733. Therefore, by providing the placement groove 1733, the stability of the second elastic member 180 during deformation can be ensured, the second elastic member 180 can be prevented from falling off, and the stability of the second unlocking member 170 during movement can be further ensured, thereby improving the overall use quality of the trolley 100.

[0068] In some embodiments of this application, please continue to refer to Figure 2 A mating groove 124 is provided on the circumferential outer wall of the second connecting portion 120, and the plug-in hole 123 is located on the bottom wall of the mating groove 124. The hand-held portion 173 is mated with the mating groove 124, and at least part of the hand-held portion 173 extends out of the mating groove 124. By setting the mating groove 124, a placement position is provided for the hand-held portion 173, thereby reducing the shaking of the second unlocking member 170 during use, and further ensuring the stability of the second unlocking member 170 during movement.

[0069] In some embodiments of this application, please refer to Figure 5 The outer surface of the hand-held portion 173 is provided with an anti-slip structure 1732. Specifically, the hand-held portion 173 is provided with an anti-slip structure 1732 on one side of the surface away from the second connecting portion 120. The user applies a thrust on the anti-slip structure 1732 to achieve the movement of the second unlocking member 170 between the second position and the first position. Thus, by providing the anti-slip structure 1732, the friction between the user's hand and the hand-held portion 173 can be increased, thereby improving the user's use quality.

[0070] The anti-skid structure 1732 may be a plurality of anti-skid protrusions.

[0071] In some embodiments of this application, please refer to Figure 5The trolley 100 may further include an anti-slip portion 131, which is connected to one end of the rotating shaft 130 close to the second connecting portion 120, and the projection of the anti-slip portion 131 on the second unlocking member 170 is at least partially located outside the contour of the long hole 171, that is, the anti-slip portion 131 cannot pass through the long hole on the second unlocking member 170. It should be noted that the anti-slip portion 131 can prevent the second unlocking member 170 from being disengaged from the rotating shaft 130, and further ensure the stability of the rotational cooperation between the second unlocking member 170 and the rotating shaft 130.

[0072] In the specific operation process, when the trolley 100 is in the first state, the second unlocking member 170 is located in the second position, and the locking member 140 is located in the locking position. By applying a thrust to the hand-held portion 173 of the second unlocking member 170, the second unlocking member 170 is moved from the second position to the first position, so that the limiting hole 172 is directly opposite to the through hole 122. At this time, the first re-unlocking is completed; then the first unlocking member 160 is pushed so that the limiting column 162 passes through the limiting hole 172 and the through hole 122, and the abutting column 161 pushes the locking member 140. 0, so that the locking member 140 moves from the locking position to the unlocking position, the second connecting part 120 rotates to the target position, and the thrust on the first unlocking member 160 is removed. Under the action of the first elastic member 150, the locking member 140 moves from the unlocking position to the locking position. At this point, the relative position of the second connecting part 120 and the first connecting part 110 is fixed, and then the thrust on the second unlocking member 170 is removed. Under the action of the second elastic member 180, the second unlocking member 170 moves from the first position to the second position, and the adjustment process is ended.

[0073] Therefore, it is not difficult to see that in the process of realizing the relative rotation between the first connecting part 110 and the second connecting part 120 (i.e., the relative rotation between the push rod 101 and the auxiliary rod 102), the user needs to simultaneously unlock the first locking member 140 and the second locking member 140. In this way, the safety factor of the trolley 100 is improved to avoid accidental touch.

[0074] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0075] The above description is only a specific embodiment of the present disclosure, so that those skilled in the art can understand or implement the present disclosure. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure will not be limited to the embodiments described herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A locking mechanism, characterized in that: include: a first connecting portion; a second connection portion opposite to the first connection portion, the first connection portion comprising a first groove opening toward the second connection portion, the second connection portion comprising a second groove opening toward the first groove, and a through hole being provided on a bottom wall of the second groove; a rotation axis, the rotation axis being provided through the first connection portion and the second connection portion, and the second connection portion being capable of rotating around the rotation axis relative to the first connection portion; A locking member and a first elastic member, wherein the locking member is adapted to both the first groove and the second groove, the first elastic member is sandwiched between the bottom wall of the first groove and the locking member, the locking member has an unlocking position and a locking position, when the locking member is located at the unlocking position, the locking member is located in the first groove, and the second connecting portion can rotate relative to the first connecting portion, when the locking member is located at the locking position, a portion of the locking member extends out of the first groove and extends into the second groove, and the second connecting portion is locked relative to the first connecting portion; a first unlocking member, the first unlocking member comprising an abutting column and a limiting column, the abutting column is passed through the through hole and abuts against the locking member, and the limiting column is directly opposite to the through hole and can pass through the through hole; a second unlocking member, wherein the second unlocking member is provided with a long hole and a limiting hole, the rotating shaft is passed through the long hole, the limiting post is adapted to the limiting hole, the second unlocking member has a first position and a second position, when the second unlocking member is located at the first position, the limiting hole is directly opposite to the through hole, the limiting post can pass through the through hole and the limiting hole, and when the second unlocking member is located at the second position, the limiting hole is staggered with the through hole; Wherein, the extending direction of the elongated hole is consistent with the moving direction of the second unlocking member.

2. The locking mechanism according to claim 1, characterized in that: An inserting hole is provided on the circumferential outer wall of the second connecting portion, the second unlocking member is passed through the inserting hole, and the second unlocking member includes a hand-holding portion, at least a portion of which extends out of the inserting hole.

3. The locking mechanism according to claim 2, characterized in that: The hand-held portion includes a limiting block, and when the second unlocking member is located at the first position, the limiting block abuts against the circumferential outer wall of the second connecting portion.

4. The locking mechanism according to claim 3, characterized in that: Also includes: A second elastic member, wherein the second elastic member is sandwiched between the limiting block and the circumferential outer wall of the second connecting portion.

5. The locking mechanism according to claim 4, characterized in that: The limiting block is provided with a placement groove opening toward the circumferential outer wall of the second connecting portion, and the second elastic member is clamped between the circumferential outer wall of the second connecting portion and the bottom wall of the placement groove.

6. The locking mechanism according to claim 2, characterized in that: A matching groove is provided on the circumferential outer wall of the second connecting portion, the plug hole is located on the bottom wall of the matching groove, the hand-held portion matches with the matching groove, and at least part of the hand-held portion extends out of the matching groove.

7. The locking mechanism according to claim 3, characterized in that: The outer surface of the handheld part is provided with an anti-slip structure.

8. The locking mechanism according to claim 1, characterized in that: The locking member is formed in a gear shape.

9. The locking mechanism according to claim 1, characterized in that: The first unlocking member further includes a pressing portion, which is connected to an end of the abutting column away from the locking member and is located outside the through hole.

10. A trolley, characterized in that: include: Push rod and auxiliary rod; The locking mechanism according to any one of claims 1 to 9, wherein the first connection portion of the locking mechanism is arranged on the push rod, and the second connection portion of the locking mechanism is arranged on the auxiliary rod.

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