A linkage lock and an apparatus with the linkage lock

Abstract

This invention discloses a linkage lock, comprising multiple locking points. One end of a drive rod at each locking point is connected to the latch via a transmission mechanism, and the other end is hinged to a connecting rod. One of the multiple locking points is locking point I, and the rest are locking points II. Locking point I is also provided with a spindle, one end of which is inserted into a through hole in the door panel, and the other end of which is connected to the corresponding drive rod. A limiting member is used to connect to the door panel. An elastic member is connected at both ends to the limiting member and the spindle, respectively. The linkage lock has the following characteristics: in the closed state, the spindle and the limiting member form an anti-rotation fit, and the latch extends out of the door panel along a first direction and connects to the lock part on the frame. In the open state, the spindle overcomes the elastic force of the elastic member and moves axially, causing the spindle to release the anti-rotation fit with the limiting member. The spindle rotates, driving the drive rod at locking point I to rotate. The drive rod at locking point I drives the drive rod at locking point II to rotate via a connecting rod. The drive rod drives the latch to retract in the opposite direction of the first direction and separate from the lock part on the frame.

Description

Technical Field

[0001] This invention belongs to the technical field of quickly opening and closing equipment doors, specifically relating to a linkage lock and a device equipped with the linkage lock. Background Technology

[0002] To meet the needs of internal component installation, maintenance, and sealing, the equipment usually uses quick-release locks to assemble the door panel. This assembly method has the following drawbacks: (1) In order to ensure the effective closure of the door panel, quick-release locks need to be installed at multiple points. As a result, the quick-release locks at each point need to be operated sequentially during the opening and closing of the door panel. This not only makes the operation process cumbersome, but also makes the opening and closing efficiency low. (2) In order to meet the opening and closing requirements of the quick-release locks, the quick-release locks at each point need to be distributed in a position that can be operated by hand, which puts forward higher requirements for the installation position of the equipment. Summary of the Invention

[0003] In view of the shortcomings of existing equipment that uses multi-point quick-release locks to assemble door panels, the purpose of this invention is to propose a linkage lock and equipment with the linkage lock.

[0004] To achieve the aforementioned objectives, the technical solution adopted by the present invention is: a linkage lock, comprising multiple locking points, each locking point being provided with a locking tongue and a drive rod, one end of the drive rod being connected to the locking tongue through a transmission mechanism, and the other end being hinged to the connecting rod 30;

[0005] One of the aforementioned locking points is locking point I10, and the rest are locking points II20;

[0006] Lock point I is also provided with a spindle 102, one end of which is inserted into the through hole in the door panel and the other end is connected to the corresponding drive rod; a limiting member is used to connect the door panel; and an elastic member is connected to the limiting member and the spindle at both ends respectively.

[0007] The linkage lock has the following characteristics: In the closed state, under the elastic force of the elastic element, the spindle and the limiting element form an anti-rotation fit, and the lock tongue extends out of the door panel along the first direction and connects with the lock part on the frame; In the open state, the spindle overcomes the elastic force of the elastic element and moves axially, so that the spindle and the limiting element release the anti-rotation fit, the spindle rotates, driving the drive rod at locking point I to rotate, the drive rod at locking point I drives the drive rod at locking point II to rotate through the connecting rod, and the drive rod drives the lock tongue to retract in the opposite direction of the first direction and separate from the lock part on the frame.

[0008] By employing the above technical solution, the linkage lock of the present invention has the following advantages:

[0009] (1) Although it also has multiple locking points, it is only necessary to rotate the spindle at locking point I to drive the drive rod at locking point I to rotate. At the same time, the drive rod at locking point I can drive all the drive rods at locking point II to rotate through the connecting rod. The drive rod at each locking point can drive the corresponding lock tongue to extend out of the door panel or retract into the door panel in the first direction through the transmission mechanism. The operation process is simple and the efficiency of opening and closing the linkage lock is high.

[0010] (2) The opening and closing of the linkage lock is controlled by the spindle at locking point I. When assembling the linkage lock, it is only necessary to install locking point I in the position most convenient for manual operation. There are no strict requirements on the installation position of the remaining locking point II, thus improving the applicability of the equipment.

[0011] In one embodiment, the locking point is further provided with a bracket for connecting the door panel, and the bracket is provided with a guide seat for forming a sliding engagement with the latch so that the latch extends out of the door panel in a first direction or retracts into the door panel in the opposite direction of the first direction.

[0012] Advantages: This invention uses the bracket as a carrier, which can minimize damage to the structural strength of the door panel. At the same time, with the help of the guide seat set on the bracket, the process of the lock tongue extending out of or retracting into the door panel can be more stable.

[0013] In one embodiment, the mandrel and the limiting member are fitted with a key and a keyway to prevent rotation.

[0014] In one embodiment, the limiting member is a limiting shell 105 that is hollow along the axial direction. The inner wall of the limiting shell is provided with a first keyway 1051 that extends along the axial direction, and the outer wall of the spindle is provided with a protruding key 1021. When the linkage lock is in the closed state, the protruding key is engaged in the first keyway to form an anti-rotation fit. When the linkage lock is in the open state, the spindle overcomes the elastic force of the elastic member and moves along the axial direction, driving the protruding key to move out of the first keyway to release the anti-rotation fit.

[0015] Advantages: When the interlock is in the closed state, the elastic element tends to engage the convex key in the first keyway, which can prevent the spindle from rotating relative to the limiting housing under the action of external force and causing false locking; when the interlock is in the open state, after overcoming the elastic force of the elastic element, the spindle can drive the convex key to move out of the first keyway, thereby allowing the spindle to rotate within the limiting housing.

[0016] In one embodiment, a rotating groove 1052 extending circumferentially is provided on the inner wall of the limiting housing located on one side of the first keyway, and the first keyway and the rotating groove are in a communicating state.

[0017] Advantages: The rotation stroke of the spindle is limited by the stop cooperation between the convex key and the two ends of the rotating groove, avoiding damage to parts such as the locking tongue and drive rod caused by excessive rotation of the spindle.

[0018] In one embodiment, the first keyway 1051 is located above the beginning of the rotary groove 1052.

[0019] Advantages: When locking point I needs to be unlocked, the protruding key that moves out of the first keyway can smoothly enter the rotating groove; when locking point I needs to be locked, after returning to the beginning of the rotating groove, the protruding key can smoothly engage in the first keyway under the elastic force of the elastic element, realizing the smooth switching of the spindle between the anti-rotation engagement state and the rotation state.

[0020] In one embodiment, the inner wall of the limiting housing is provided with a second keyway 1053 extending axially. After the linkage lock is opened to the position, the convex key is engaged in the second keyway to form an anti-rotation fit.

[0021] Advantages: After the interlock is fully engaged, the convex key is engaged in the second keyway under the elastic force of the elastic element, thus keeping the interlock in the unlocked position. This prevents accidental contact caused by the bolt protruding from the door panel when the door panel is in a disassembled state for an extended period of time.

[0022] In one embodiment, the inner wall of the limiting housing located on one side of the first keyway is provided with a circumferentially extending rotating groove 1052, and both the first keyway and the second keyway are in communication with the rotating groove.

[0023] In one embodiment, the first keyway 1051 is located above the beginning of the rotating groove 1052, and the second keyway 1053 is located above the end of the rotating groove 1052.

[0024] Advantages: After the convex key moves to both ends of the rotating groove, it can smoothly engage in the first or second keyway under the elastic force of the elastic element, realizing the smooth switching of the spindle between the anti-rotation engagement state and the rotation state.

[0025] In one embodiment, the inner wall of the limiting housing is provided with a plurality of first keyways 1051 and a plurality of second keyways 1053 along the circumferential direction, and the first keyways and second keyways are staggered in the circumferential direction; the outer wall of the mandrel is provided with a plurality of protruding keys equal in number to the number of first keyways.

[0026] Advantages: The stability of the interlocking lock in the closed state is further improved by the cooperation of multiple convex keys and multiple first key slots or second key slots.

[0027] In one embodiment, a stop 1054 is provided on the inner wall of the limiting housing on the other side of the first keyway. When the linkage lock is in the closed state, the convex key is inserted into the first keyway to form an anti-rotation fit, and the convex key and the stop axially form a blocking fit.

[0028] Advantages: The stop not only enables the assembly of the mandrel within the limiting housing, but also prevents the convex key from dislodging from the first keyway under the elastic force of the elastic element.

[0029] In one embodiment, a first boss 1022 is provided on the outer wall of the mandrel, and the aforementioned key 1021 is provided on the outer wall of the first boss. When the mandrel is inserted into the interior of the limiting housing from the opening on one side of the limiting housing, the key is engaged in the first keyway, and the elastic element is clamped between the first boss and the retaining ring 1055 installed at the bottom of the limiting housing.

[0030] Advantages: With the help of the first boss, the assembly of the mandrel and elastic element in the limiting housing can be completed quickly.

[0031] In one embodiment, a second stop 10551 is provided on the inner wall of the retaining ring 1055, and a corrugated spring 106, which is an elastic element, is sandwiched between the first boss and the second stop and surrounds the spindle 102.

[0032] Advantages: The second stop facilitates the accurate positioning of the bellows, and the bellows are distributed around the spindle, which can provide sufficient elastic force to make the convex key tend to engage into the first keyway.

[0033] In one embodiment, a first sealing ring 1056 is provided on the surface of the limiting housing away from the drive rod; a second boss 1023 is provided on the outer wall of the spindle on the other side of the convex key, and a second sealing ring 1024 is sandwiched between the stop 1054 and the second boss 1023.

[0034] In one embodiment, a sealing groove 10231 for installing a second sealing ring is provided on one of the inner wall of the baffle 1054 and the outer wall of the second boss 1023.

[0035] Advantages: This invention uses a second sealing ring to seal the annular gap between the second protrusion and the baffle, and achieves excellent dustproof and waterproof effects through the first and second sealing rings.

[0036] In one embodiment, the drive rod at locking point I is provided with a groove 1034 for placing the end of the limiting housing. The two sides of the groove distributed along the width direction of the drive rod are open, and the two inner walls distributed along the length direction of the drive rod are arc-shaped with the curvature of the outer wall of the limiting housing.

[0037] Advantages: When the limiting housing is installed on the bracket, the lower end of the limiting housing is placed in the aforementioned groove. When locking point I is in the locked position, the limiting housing's blocking effect further prevents the active drive rod 103 from shaking. When locking point I is in the unlocked position, the guiding effect of the outer wall of the limiting housing makes the rotation of the active drive rod around the spindle smoother.

[0038] In one embodiment, a bracket I 104 is also provided at the locking point I, and at least two protrusions I 1042 are provided on the bracket I; the limiting member has two symmetrically distributed lugs 1057, and the limiting member is installed on the bracket I by the cooperation of the protrusions I and the lugs.

[0039] Advantages: This invention uses the bracket as a carrier and suspends the limiting component on the bracket I with the help of the cooperation of the protrusion and the lug, which can minimize damage to the structural strength of the door panel. At the same time, the gap between the limiting component and the surface of the bracket provides space for the assembly of the drive rod at the locking point I.

[0040] In one embodiment, the end of the mandrel inserted into the through hole in the door panel protrudes from the door panel, and the end of the mandrel 102 is provided with a force-applying part for cooperating with the force-applying component.

[0041] Advantages: By coordinating the force-applying components and the force-applying parts, the efficiency of opening and closing the interlock is further improved.

[0042] In one embodiment, the other end of the spindle 102 is provided with a connecting shaft 1025, and the drive rod at locking point I is provided with a first connecting hole 1031 for inserting and engaging with the aforementioned connecting shaft.

[0043] Advantages: By connecting the connecting shaft and the first connecting hole, when the interlock is in the closed state, the drive rod at locking point I can be restricted from shaking; when the interlock is in the open state, the rotating spindle can synchronously drive the drive rod at locking point I to rotate.

[0044] In one embodiment, the axis of the connecting shaft 1025 coincides with the axis of the mandrel 102, and the cross-section of the connecting shaft inserted into the first connecting hole is set to a non-circular shape.

[0045] In one embodiment, the axis of the connecting shaft 1025 coincides with the axis of the spindle 102, and the cross-section of the connecting shaft inserted into the first connecting hole is set to be circular; the other end of the spindle 102 is also provided with an eccentric connecting shaft 1026 whose axis is parallel to the axis of the spindle, and the drive rod at the locking point I is provided with a second connecting hole 1032 for insertion and engagement with the aforementioned eccentric connecting shaft when the linkage lock is opened.

[0046] Advantages: When the interlock is opened, the spindle overcomes the elastic force of the elastic element and moves axially, driving the eccentric connecting shaft to move and insert it into the corresponding second connecting hole. Then, when the spindle rotates, the drive rod at the locking point I rotates synchronously around the axis of the spindle through the eccentric connecting shaft.

[0047] In one embodiment, the transmission mechanism is a transmission rod, with its two ends hinged to the end of the drive rod and the end of the locking tongue, respectively.

[0048] Advantages: When the interlock needs to be opened, the rotating drive rod can drive the bolt to retract in the opposite direction of the first direction and separate from the lock part on the door panel through the action of the first transmission rod.

[0049] In one embodiment, a bracket 203 is also provided at the locking point II, and a second elastic element is provided between the bracket II and the drive rod at the locking point II to provide elastic force so that the locking tongue at the locking point II tends to extend out of the door panel.

[0050] Advantages: With the elastic force provided by the second elastic element, when the interlock is in the closed state, on the one hand, the bolt at locking point II tends to extend out of the door panel, and on the other hand, it can prevent the drive rod at locking point II from shaking.

[0051] In one embodiment, the bracket II is provided with a rotating shaft 2033 whose axis is parallel to the axis of the spindle. The rotating shaft passes through the drive rod at the locking point II. The second elastic element surrounds the rotating shaft and its two ends are respectively connected to the bracket II and the drive rod at the locking point II.

[0052] Advantages: When the interlock is opened, the drive rod at locking point II can rotate around the pivot, which not only makes the rotation of the drive rod smoother, but also, since the axis of the pivot is parallel to the axis of the spindle, the rotation of the drive rod at locking point I and the drive rod at locking point II can be synchronized as much as possible.

[0053] In one embodiment, a hollow convex shell 2022 is provided on the drive rod at locking point II. After the rotating shaft 2033 passes through the convex shell along its axial direction, a limiting nut 2034 is installed at its end. The torsion spring 2035 is located inside the convex shell and its two ends are respectively connected to the convex shell and the bracket II.

[0054] Advantages: The convex shell enables quick assembly of the shaft and torsion spring, and ensures that the torsion spring has sufficient elastic force.

[0055] To achieve the aforementioned objectives, the present invention also employs the following technical solution: a device comprising a door panel and a frame, wherein the aforementioned linkage lock is disposed on the door panel and the frame; when the linkage lock is in the closed state, the door panel is closed on the frame; when the linkage lock is in the open state, the door panel can be opened from the frame.

[0056] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0057] Figure 1 This is a three-dimensional schematic diagram of a linkage lock according to this embodiment.

[0058] Figure 2A This is a three-dimensional schematic diagram of locking point I in the locked position in this embodiment.

[0059] Figure 2BThis is a three-dimensional schematic diagram of lock point I in the unlocked position in this embodiment.

[0060] Figure 3 This is an assembly diagram of the mandrel, limiting housing, and corrugated spring at locking point I.

[0061] Figure 4 This is a three-dimensional schematic diagram of the mandrel at lock point I.

[0062] Figure 5A This is a three-dimensional schematic diagram of the limiting housing at locking point I.

[0063] Figure 5B This is a cross-sectional schematic diagram of the limiting housing at locking point I.

[0064] Figure 6 This is a three-dimensional schematic diagram of the active drive rod at lock point I.

[0065] Figure 7A This is a three-dimensional schematic diagram of locking point II in the locked position in this embodiment.

[0066] Figure 7B This is a three-dimensional schematic diagram of locking point II in the unlocked position in this embodiment.

[0067] Figure 8 This is an assembly diagram of the driven rod, rotating shaft, and torsion spring at locking point II.

[0068] Figure 9 This is a three-dimensional schematic diagram of the driven rod at lock point II. Detailed Implementation

[0069] The features and exemplary embodiments of various aspects of the present invention will now be described in detail. Numerous specific details are set forth in the following detailed description in order to provide a thorough understanding of the invention. However, it will be apparent to those skilled in the art that the invention may be practiced without requiring some of these specific details. The following description of embodiments is merely intended to provide a better understanding of the invention by illustrating examples of the invention. In the accompanying drawings and the following description, at least some well-known structures and techniques have not been shown in order to avoid unnecessarily obscuring the invention; and, for clarity, the dimensions of some structures may be exaggerated. The features, structures, or characteristics described below may be combined in any suitable manner in one or more embodiments; furthermore, the terms “first or I,” “second or II,” “third or III,” etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0070] The directional terms used in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of the present invention. It should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0071] Please see Figure 1 This is an embodiment of a linkage lock according to the present invention. The linkage lock in this embodiment includes a locking point I 10 located on the far left, two remaining locking points II 20, and a connecting rod 30 connecting the aforementioned locking points I and II. Of course, the present invention does not limit the position and number N of the locking points. When there are multiple locking points, only one locking point that is most convenient for manual operation needs to be defined as locking point I, and the remaining (N-1) locking points are all defined as locking points II.

[0072] Please also refer to Figure 2A , Figure 2B The locking point I is provided with an active locking tongue 101, which can extend out of the door panel in the first direction to achieve the locking position and can retract into the door panel in the opposite direction of the first direction to achieve the unlocking position; a limiting member is used to connect the door panel; a spindle 102 is inserted into the through hole in the door panel at one end and is used to connect the active drive rod 103 at the other end; the active drive rod 103 is connected to the active locking tongue 101 at one end through a transmission mechanism and is hinged to the connecting rod 30 at the other end; an elastic member is connected to the limiting member and the spindle at both ends respectively. With the aforementioned structure, the locking point I has: a locked position (where the interlock is closed), where the spindle 102 and the limiting member form an anti-rotation fit under the elastic force provided by the elastic element, and the active locking tongue 101 extends out of the door panel along the first direction and connects with the lock part on the frame (for example, the lock part on the frame is a lock groove, and the active locking tongue is inserted into the lock groove to achieve locking); and an unlocked position (where the interlock is open), where the spindle 102 overcomes the elastic force of the elastic element and moves axially, causing the spindle to release the anti-rotation fit with the limiting member. Then, the spindle 102 rotates, driving the active drive rod 103 to rotate synchronously. Under the action of the transmission mechanism, the active drive rod drives the active locking tongue 101 to retract in the opposite direction of the first direction and separate from the lock part on the frame (for example, the active locking tongue is pulled out from the lock groove to achieve unlocking).

[0073] In this embodiment, a bracket I 104 is also provided at the locking point I. The bracket is used to install on the door panel of the equipment and serves as a mounting carrier for other components of the linkage lock. In this embodiment, using bracket I as a carrier can minimize damage to the structural strength of the door panel, thereby ensuring the sealing effect of the door panel. A guide seat I 1041 is provided on the side of bracket I 104 away from the connecting rod 30. The interior of guide seat I is hollow along the first direction. The aforementioned active locking tongue 101 is slidably assembled in guide seat I. When the spindle rotates, under the guidance of guide seat I, the active locking tongue smoothly extends out of or retracts into the door panel along the first direction.

[0074] Please also refer to Figure 3 , Figure 5A and Figure 5B In this embodiment, the limiting component is a limiting shell 105 that is hollow along the axial direction.

[0075] The inner wall of the limiting housing 105 is provided with a plurality of first keyways 1051 at intervals along the circumference (for example, four first keyways are provided along the circumference in this embodiment). The first keyways extend along the axial direction of the limiting housing. Please also refer to Figure 4The outer wall of the mandrel is provided with a plurality of protruding keys 1021 spaced circumferentially. When locking point I is in the locked position, each protruding key 1021 is confined within the corresponding first keyway 1051 to form an anti-rotation fit, preventing the mandrel from rotating relative to the limiting housing under the action of external force and causing mis-locking. When locking point I is in the unlocked position, the mandrel can overcome the elastic force of the elastic element and move axially, driving the protruding key 1021 to move out of the corresponding first keyway 1051 to release the aforementioned anti-rotation fit, at which time the mandrel is allowed to rotate within the limiting housing; furthermore, within the limiting housing located below the first keyway Multiple rotating grooves 1052 are spaced circumferentially along the wall. These rotating grooves 1052 extend circumferentially along the limiting housing and communicate with the corresponding first keyway 1051. When the locking point I is in the unlocked position, the spindle moves axially, and the convex key moves out of the first keyway and enters the corresponding rotating groove. At this time, the convex key is allowed to rotate within the rotating groove. In this embodiment, the rotation stroke of the spindle is limited by the stop cooperation between the convex key and the two ends of the rotating groove, avoiding damage to parts such as the active locking tongue and the active drive rod caused by excessive rotation of the spindle. Ideally, the first keyway 1051 is located at the first end of the rotating groove 1052. Above the end (i.e., the inner wall of the first keyway distributed circumferentially is flush with the inner wall of the first end of the rotating groove), when locking point I needs to be unlocked, the protruding key that moves out of the first keyway can smoothly enter the rotating groove. When locking point I needs to be locked, after returning to the first end of the rotating groove, under the elastic force of the elastic element, the protruding key can smoothly engage in the first keyway, realizing the smooth switching of the spindle between the anti-rotation engagement state and the rotation state; furthermore, the inner wall of the limiting housing 105 is also provided with a plurality of second keyways 1053 at intervals along the circumferential direction (for example, four second keyways are provided along the circumferential direction in this embodiment), the second keyways 10 53 is best located above the end of the corresponding rotating groove 1052 (i.e., the inner wall of the second keyway distributed circumferentially is flush with the inner wall of the end of the rotating groove). Therefore, the first keyway and the second keyway are staggered in the circumferential direction. When the lock point I is unlocked, the convex key that moves out from the first keyway rotates along the rotating groove to its end. At this time, the linkage lock is in the open position. Under the elastic force of the elastic element, the convex key can smoothly enter the second keyway, so that the lock point I is kept in the unlocked position. Thus, when the door panel is in the long-term disassembled state, the active lock tongue can be prevented from extending out of the door body and causing accidental collision. In addition, a stop 1054 is provided on the inner wall of the limiting housing located on the upper side of the first keyway, and an elastic element provides elastic force so that the convex key 1021 can enter the first keyway 1051 to realize the anti-rotation fit between the mandrel and the limiting housing. Furthermore, the top surface of the convex key entering the first keyway and the bottom surface of the stop axially form a stop fit, which not only realizes the assembly of the mandrel in the housing, but also prevents the convex key from coming out of the first keyway under the elastic force of the elastic element.

[0076] Please see Figure 4In this embodiment, a first boss 1022 is provided on the outer wall of the mandrel 102, and the aforementioned protruding keys 1021 are circumferentially spaced on the outer wall of the first boss extending circumferentially. When the mandrel is inserted into the interior of the limiting housing through the opening on the lower side of the limiting housing, the protruding keys 1021 are engaged in the corresponding first keyway 1051. At the same time, a retaining ring 1055 is installed at the bottom of the limiting housing 105. The corrugated spring 106, as an elastic element, is located inside the limiting housing 105 and sandwiched between the first boss 1022 and the retaining ring 1055. The corrugated spring tends to limit the protruding key in the first keyway. Furthermore, a second stop 10551 is provided inside the retaining ring 1055. During assembly, the corrugated spring 106 is sandwiched between the first boss and the second stop and surrounds the mandrel 102. The second stop facilitates the accurate positioning of the corrugated spring.

[0077] In this embodiment, the top surface of the limiting housing 105 is provided with a first sealing ring 1056. When the bracket I at the locking point I is installed on the door panel, the first sealing ring fits against the back of the door panel, achieving a seal between the top surface of the limiting housing and the back of the door panel. A second protrusion 1023 is provided on the outer wall of the spindle 102 located on the upper side of the key. A sealing groove 10231 is formed by extending radially from the outer wall of the second protrusion. When the spindle is inserted into the interior of the limiting housing from the opening on the lower side of the limiting housing, the second protrusion 1023 passes through the interior of the baffle 1054. The second sealing ring 1024 installed in the sealing groove 10231 contacts the inner wall surface of the baffle 1054, sealing the annular gap between the second protrusion and the baffle. In this embodiment, the first sealing ring and the second sealing ring provide excellent dustproof and waterproof effects.

[0078] In this embodiment, the outer wall of the limiting housing 105 is provided with two symmetrically distributed lugs 1057, and the bracket I 104 is provided with at least two protrusions I 1042 (for example, in this embodiment, four protrusions are provided on the upper surface of the bracket in a rectangular distribution). The bracket is firmly installed on the door panel by the cooperation of the protrusions and bolts. At the same time, the limiting housing is installed on the bracket by the cooperation of the lugs and the two protrusions I located on both sides of the active drive rod. The gap between the bottom of the limiting housing and the upper surface of the bracket provides space for the assembly of the active drive rod.

[0079] Please see Figure 4 In this embodiment, a connecting shaft 1025 and an eccentric connecting shaft 1026 are provided at the lower end of the mandrel 102. The axis of the connecting shaft coincides with the axis of the mandrel. Please refer to [link to relevant documentation]. Figure 3When the mandrel is installed inside the limiting housing, the connecting shaft 1025 protrudes from the limiting housing 105, and the lower end of the connecting shaft with a circular cross-section is inserted into the first connecting hole 1031 provided in the middle of the active drive rod 103. Through the insertion and cooperation of the connecting shaft and the first connecting hole, not only is the phenomenon of the active drive rod 103 shaking avoided when the locking point I is in the locked position, but also when the locking point I is in the unlocked position, the active drive rod 103 is rotated around the axis of the mandrel. The axis of the eccentric connecting shaft is parallel to the axis of the mandrel. When the locking point I is in the unlocked position, the mandrel 102 moves axially against the elastic force of the corrugated spring 106, driving the eccentric connecting shaft 1026 to approach the active drive rod 103 and the lower end of the eccentric connecting shaft is inserted into the corresponding second connecting hole 1032 on the active drive rod 103. Then, when the mandrel rotates, the active drive rod 103 is driven to rotate synchronously around the axis of the mandrel through the eccentric connecting shaft. Furthermore, to ensure the driving effect of the eccentric connecting shaft, the outer wall of the eccentric connecting shaft opposite to the connecting shaft is flattened.

[0080] Please see Figure 3 and Figure 4 In this embodiment, when the mandrel is inserted into the interior of the limiting housing through the opening on the lower side of the limiting housing, the upper end of the mandrel protruding from the limiting housing is inserted into the through hole on the door panel as the force-applying end. The upper end of the mandrel is provided with a force-applying part for cooperating with the force-applying component. In this embodiment, the force-applying part is a hexagonal groove structure 1027. Of course, in other embodiments of the present invention, the force-applying part can be other structures, such as a polygonal protrusion structure. Furthermore, the upper end of the mandrel protrudes from the door panel, which facilitates the cooperation between the force-applying part and the power tool.

[0081] In this embodiment, the transmission mechanism includes a first transmission rod 107. The two ends of the first transmission rod 107 are hinged to one end of the active drive rod 103 and the end of the active locking tongue 101 respectively via pins and bolts. When locking point I is in the locked position, the spindle and the limiting housing form an anti-rotation fit. At this time, the axes of the active drive rod, the first transmission rod, and the active locking tongue are on a straight line. The axes of the driven drive rod, the second transmission rod, and the driven locking tongue at locking point II are also on a straight line. That is, whether it is locking point I or locking point II, the axes of the drive rod, the transmission rod, and the locking tongue coincide in the locked position, and the postures of these three parts are in the same direction. When the front end of the locking tongue is subjected to external forces in various directions, under the action of the corresponding guide seats, the direction in which the locking tongue transmits the external force is always along the axial direction of the three parts (i.e., Figure 2B , Figure 7B(as shown in the opposite direction), so the external force on the latch is ultimately decomposed onto the bracket. In this state, the latch is not easy to retract in the opposite direction, and the locking state is more stable. When lock point I needs to be unlocked, the spindle overcomes the elasticity of the corrugated spring and moves axially. Then the spindle drives the active drive rod to rotate synchronously. Through the action of the first transmission rod, the active latch is driven to retract to the door panel in the opposite direction of the first direction. At this time, the axes of the active drive rod, the first transmission rod, and the active latch are not on a straight line.

[0082] Please see Figure 6 In this embodiment, the active drive rod 103 is provided with a first connecting hole 1031 located in the middle and a second connecting hole 1032 located on one side of the first connecting hole. The first connecting hole 1031 is used to insert and cooperate with the connecting shaft 1025, and the second connecting hole 1032 is used to insert and cooperate with the eccentric connecting shaft 1026 when the locking point I is in the unlocked position. Both ends of the active drive rod 103 are also provided with third connecting holes 1033. One of the third connecting holes is hinged to the connecting rod 30 through the cooperation of a pin and a bolt, and the other third connecting hole is hinged to the first transmission rod 107 through the cooperation of a pin and a bolt. Furthermore, the active drive rod 103 located between the two third connecting holes is provided with a groove 1034. The two sides of the groove distributed along the width direction of the active drive rod are open, and the two inner walls of the groove distributed along the length direction of the active drive rod are arc-shaped with the same curvature as the outer wall of the limiting housing. When the limiting housing is installed on the bracket, the lower end of the limiting housing is placed in the aforementioned groove. When the locking point I is in the locked position, the limiting housing's blocking effect further prevents the active drive rod 103 from shaking. When the locking point I is in the unlocked position, the guiding effect of the outer wall of the limiting housing makes the rotation process of the active drive rod around the spindle smoother.

[0083] Please also refer to Figure 7A and Figure 7B The locking point II is equipped with a driven latch 201, which can extend out of the door panel in a first direction to achieve a locked position and retract into the door panel in the opposite direction of the first direction to achieve an unlocked position. A driven drive rod 202 has one end connected to the driven latch 201 via a transmission mechanism, and the other end hinged to a connecting rod 30. With the aforementioned structure, the locking point II has: a locked position (where the interlock is closed), where the driven latch 201 extends out of the door panel in the first direction and connects to the lock portion on the frame; and an unlocked position (where the interlock is open), where the spindle 102 overcomes the elastic force of the elastic element and moves axially, releasing the spindle from the anti-rotation engagement with the limiting element. Then, the spindle 102 rotates, driving the active drive rod 103 to rotate. The active drive rod 103 synchronously drives the driven drive rod 202 to rotate via the connecting rod 30. Under the action of the transmission mechanism, the driven drive rod drives the driven latch 201 to retract into the door panel in the opposite direction of the first direction and separate from the lock portion on the frame.

[0084] In this embodiment, a bracket II203 is also provided at the locking point II. The structure of the bracket II203 is the same as that of the bracket I104 at the locking point I, both of which are provided with a guide seat II2031 and a boss II2032. The transmission mechanism includes a second transmission rod 204. The structure of the second transmission rod 204 is the same as that of the first transmission rod 107. Its two ends are hinged to one end of the driven drive rod 202 and the end of the driven locking tongue 201 respectively through the cooperation of pins and bolts.

[0085] Please see Figure 9 Compared to the active drive rod 103, in this embodiment, the driven drive rod 202 only retains two fourth connecting holes 2021 at both ends. One of the fourth connecting holes is hinged to the connecting rod 30 through the cooperation of a pin and a bolt, and the other fourth connecting hole is hinged to the second transmission rod 204 through the cooperation of a pin and a bolt. Further details can be found in the accompanying documentation. Figure 8 and Figure 9 In this embodiment, a hollow convex shell 2022 is provided in the middle of the driven drive rod 202. A rotating shaft 2033 is provided on the bracket II. The rotating shaft passes through the convex shell along its axial direction and a limiting nut 2034 (or other types of limiting components, such as limiting pins) is installed at its end. Torsion springs 2035 (or other types of elastic components) are provided inside the aforementioned convex shell and distributed around the rotating shaft. The two ends of the torsion springs 2035 are respectively connected to the convex shell 2022 and the bracket II 203. When the driving drive rod 103 rotates, the driven drive rod 202 rotates around the rotating shaft 2033 under the transmission of the connecting rod, which makes the rotation process of the driven drive rod smoother. Meanwhile, since the axis of the rotating shaft 2033 is parallel to the axis of the spindle 102 at locking point I, the rotation process of the active drive rod and the driven drive rod can be synchronized as much as possible. In this embodiment, with the help of the elastic force provided by the torsion spring, when locking point II is in the locked position, on the one hand, the driven bolt tends to extend out of the door panel, and on the other hand, the driven drive rod can be prevented from shaking. Considering that locking point II is limited by the torsion spring, when locking point II is in the locked position, the axes of the driven drive rod, the second transmission rod, and the driven bolt are on the same straight line. When the bolt is subjected to external force and has a tendency to retreat, the external force can be decomposed onto the bracket, so the torsion spring is not easily deformed or damaged by force. Furthermore, the bracket II located below the convex shell 2022 is also provided with a mounting groove 2036. This mounting groove and the convex shell together form a chamber for mounting the rotating shaft 2033 and the torsion spring 2035 distributed around the rotating shaft. The top of the convex shell is provided with a first limiting hole 20221 and the bottom of the mounting groove is provided with a second limiting hole. The upper end of the torsion spring 2035 is placed in the first limiting hole and the lower end is placed in the second limiting hole. With the aforementioned design, the rapid assembly of the rotating shaft and the torsion spring is realized, and the torsion spring has sufficient elastic force.

[0086] With the aforementioned locking points I and II, this embodiment of a linkage lock has the following characteristics: In the closed state, under the elastic force provided by the corrugated spring, the spindle 102 at locking point I forms an anti-rotation fit with the limiting housing 105, and the active locking tongue 101 at locking point I and the driven locking tongue 201 at locking point II both extend out of the door panel along a first direction and connect with the lock part on the frame; In the open state, the spindle 102 at locking point I overcomes the elastic force of the corrugated spring and moves axially, driving the convex key 1021 to move out of the first keyway 1051 to release the anti-rotation fit. The spindle 102 rotates, causing the active drive rod 103 to rotate synchronously. The active drive rod 103 drives the active locking tongue 101 to retract in the opposite direction of the first direction and separate from the locking part on the door frame. At the same time, the active drive rod 103 at locking point I drives the driven drive rod 202 at locking point II to rotate synchronously through the connecting rod 30. The driven drive rod 202 drives the driven locking tongue 201 to retract in the opposite direction of the first direction and separate from the locking part on the door frame through the second transmission rod 204.

[0087] In other embodiments of the present invention, a first convex key and a second convex key may be provided on the inner wall of the limiting housing, and a keyway may be provided on the outer wall of the mandrel. The keyway extends along the axial direction of the mandrel. The mandrel and the limiting housing are fitted together by the first convex key and the keyway to form an anti-rotation fit. When the mandrel moves axially, the keyway and the first convex key can be separated, thereby allowing the mandrel to rotate.

[0088] In other embodiments of the present invention, the first boss provided on the outer wall of the mandrel can be omitted. In this case, a plurality of protruding keys are provided circumferentially at intervals on the outer wall of the mandrel. Each protruding key extends radially along the mandrel to form a strip shape. The end of the protruding key is used to limit the position in the first keyway or the second keyway. A corrugated spring, as an elastic element, is clamped between the part of the protruding key near the mandrel and the second stop of the retaining ring.

[0089] In other embodiments of the present invention, the sealing groove provided on the second protrusion can be omitted. In this case, a sealing groove needs to be formed by extending radially from the inner wall of the baffle. The second sealing ring is installed in the aforementioned sealing groove. After the second protrusion passes through the inside of the baffle, the second sealing ring contacts the outer wall surface of the second protrusion to seal the annular gap between the second protrusion and the baffle.

[0090] In other embodiments of the present invention, the second protrusion on the outer wall of the mandrel can be omitted. In this case, after the mandrel passes through the inside of the baffle, a columnar sealing plug needs to be installed between the outer wall of the mandrel and the inner wall of the baffle to replace the second sealing ring and seal the annular gap between the second protrusion and the baffle.

[0091] In other embodiments of the present invention, the eccentric connecting shaft at the lower end of the mandrel and the second connecting hole on the active drive rod can be omitted. In this case, the lower end of the connecting shaft inserted into the first connecting hole needs to be set to a non-circular shape, such as rectangular, triangular, semi-circular, or elliptical, so as to transmit torque to the active drive rod when the connecting shaft rotates; or the axis of the connecting shaft needs to be set to be not on the same straight line as the axis of the mandrel (i.e., not coincident). In this case, the connecting shaft is actually an eccentric connecting shaft.

[0092] In other embodiments of the present invention, the first transmission rod and the second transmission rod can be omitted. In this case, the transmission mechanism includes a slide groove disposed at the end of the drive rod and extending along the length direction of the drive rod. The end of the lock tongue is installed in the aforementioned slide groove by a limiting pin. When the drive rod rotates, the sliding of the limiting pin in the slide groove can drive the lock tongue to extend out of the door panel in the first direction to achieve the locking position, or to retract into the door panel in the opposite direction of the first direction to achieve the unlocking position.

[0093] In other embodiments of the present invention, provided that the thickness of bracket II is sufficient, the protruding shell on the driven drive rod can be omitted. In this case, a through hole needs to be provided in the middle of the driven drive rod, and the upper end of the rotating shaft passes through the through hole and is then fitted with a limiting member. The two ends of the torsion spring are respectively connected to the bottom of the driven drive rod and the bottom of the mounting groove. Furthermore, the rotating shaft on bracket II can also be omitted, and an elastic element can be directly provided between bracket II and the driven drive rod, for example, an elastic element can be provided between the protruding seat II and the side wall of the driven drive rod.

[0094] Based on the aforementioned linkage lock, the present invention also proposes a device including a door panel and a frame. The linkage lock of any of the aforementioned embodiments is disposed on the door panel and the frame. When the linkage lock is in the closed state, the door panel is closed on the frame; when the linkage lock is in the open state, the door panel can be opened from the frame.

[0095] The above description is merely a preferred embodiment of the present invention. Any simple modifications, equivalent changes, and alterations made by those skilled in the art to the above embodiments without departing from the scope of the present invention and based on the technical essence of the present invention shall still fall within the scope of the present invention.

Claims

1. A linked lock characterized in that It includes multiple locking points, each of which is equipped with a locking tongue and a drive rod. One end of the drive rod is connected to the locking tongue through a transmission mechanism, and the other end is hinged to the connecting rod (30). One of the aforementioned locking points is locking point I (10), and the rest are locking points II (20). Lock point I is also provided with a spindle (102), one end of which is inserted into the through hole on the door panel and the other end is connected to the corresponding drive rod; a limiting member is used to connect the door panel; and an elastic member is connected to the limiting member and the spindle at both ends respectively. The linkage lock has the following characteristics: In the closed state, under the elastic force of the elastic element, the spindle and the limiting element form an anti-rotation fit, and the lock tongue extends out of the door panel along the first direction and connects with the lock part on the frame; In the open state, the spindle overcomes the elastic force of the elastic element and moves axially, so that the spindle and the limiting element release the anti-rotation fit, the spindle rotates, drives the drive rod at lock point I to rotate, the drive rod at lock point I drives the drive rod at lock point II to rotate through the connecting rod, and the drive rod drives the lock tongue to retract in the opposite direction of the first direction and separate from the lock part on the frame. The limiting component is a hollow limiting shell (105) along the axial direction. The inner wall of the limiting shell is provided with a first keyway (1051) extending along the axial direction, and the outer wall of the spindle is provided with a convex key (1021). When the linkage lock is in the closed state, the convex key is inserted into the first keyway to form an anti-rotation fit. When the linkage lock is in the open state, the spindle overcomes the elastic force of the elastic element and moves along the axial direction, driving the convex key to move out of the first keyway to release the anti-rotation fit. The inner wall of the limiting shell is provided with a second keyway (1053) extending along the axial direction. After the linkage lock is opened to the position, the convex key is inserted into the second keyway to form an anti-rotation fit. The inner wall of the limiting shell located on one side of the first keyway is provided with a rotating groove (1052) extending circumferentially. The first keyway and the second keyway are both in communication with the rotating groove. The first keyway (1051) is located above the first end of the rotating groove (1052), and the second keyway (1053) is located above the end of the rotating groove (1052).

2. The interlocking lock of claim 1, wherein The locking point is also provided with a bracket for connecting the door panel. The bracket is provided with a guide seat for forming a sliding engagement with the lock tongue so that the lock tongue extends out of the door panel in the first direction or retracts into the door panel in the opposite direction of the first direction.

3. The interlocking lock of claim 1, wherein The spindle and the limiting component are fitted with a key and a keyway to prevent rotation.

4. The interlocking lock of claim 1, wherein The inner wall of the limiting housing is provided with a plurality of first keyways (1051) and a plurality of second keyways (1053) along the circumferential direction, and the first keyways and second keyways are staggered in the circumferential direction; the outer wall of the spindle is provided with a plurality of protruding keys equal in number to the number of first keyways.

5. The interlocking lock of claim 1, wherein A stop (1054) is provided on the inner wall of the limiting housing on the other side of the first keyway. When the linkage lock is in the closed state, the convex key is inserted into the first keyway to form a non-rotation fit, and the convex key and the stop form a stop fit in the axial direction.

6. The interlocking lock of claim 1, wherein A first boss (1022) is provided on the outer wall of the mandrel, and the aforementioned key (1021) is provided on the outer wall of the first boss. When the mandrel is inserted into the interior of the limiting housing from the opening on one side of the limiting housing, the key is engaged in the first keyway, and the elastic element is clamped between the first boss and the retaining ring (1055) installed at the bottom of the limiting housing.

7. The linkage lock according to claim 6, characterized in that... The inner wall of the retaining ring (1055) is provided with a second stop (10551), and the corrugated spring (106) as an elastic element is sandwiched between the first boss and the second stop and surrounds the spindle (102).

8. The linkage lock according to claim 5, characterized in that... A first sealing ring (1056) is provided on the surface of the limiting housing away from the drive rod; a second boss (1023) is provided on the outer wall of the spindle on the other side of the convex key, and a second sealing ring (1024) is sandwiched between the stop (1054) and the second boss (1023).

9. The linkage lock according to claim 8, characterized in that... A sealing groove (10231) for installing a second sealing ring is provided on one of the inner wall of the baffle (1054) and the outer wall of the second boss (1023).

10. The linkage lock according to claim 1, characterized in that... The drive rod at locking point I is provided with a groove (1034) for placing the end of the limiting housing. The two sides of the groove distributed along the width direction of the drive rod are open, and the two inner walls distributed along the length direction of the drive rod are arc-shaped with the same curvature as the outer wall of the limiting housing.

11. The linkage lock according to claim 1, characterized in that... The locking point I is also provided with a bracket I (104) for connecting the door panel. At least two protrusions I (1042) are provided on the bracket I. The limiting member has two symmetrically distributed lugs (1057). The limiting member is installed on the bracket I by the cooperation of the protrusions I and the lugs.

12. The linkage lock according to claim 1, characterized in that... The end of the spindle inserted into the through hole in the door panel protrudes from the door panel, and the end of the spindle (102) is provided with a force-applying part for cooperating with the force-applying component.

13. The linkage lock according to claim 1, characterized in that... The other end of the spindle (102) is provided with a connecting shaft (1025), and the drive rod at locking point I is provided with a first connecting hole (1031) for inserting and engaging with the aforementioned connecting shaft.

14. The linkage lock according to claim 13, characterized in that... The axis of the connecting shaft (1025) coincides with the axis of the mandrel (102), and the cross-section of the connecting shaft inserted into the first connecting hole is set to a non-circular shape.

15. The linkage lock according to claim 13, characterized in that... The axis of the connecting shaft (1025) coincides with the axis of the spindle (102), and the cross section of the connecting shaft inserted into the first connecting hole is set to be circular; the other end of the spindle (102) is also provided with an eccentric connecting shaft (1026) whose axis is parallel to the axis of the spindle, and the drive rod at the locking point I is provided with a second connecting hole (1032) for insertion and cooperation with the aforementioned eccentric connecting shaft when the linkage lock is opened.

16. The linkage lock according to claim 1, characterized in that... The transmission mechanism is a transmission rod, and the two ends of the transmission rod are respectively hinged to the end of the drive rod and the end of the locking tongue.

17. The linkage lock according to claim 1, characterized in that... The locking point II is also provided with a second elastic element for providing elastic force so that the locking tongue at the locking point II tends to extend out of the door panel.

18. The linkage lock according to claim 17, characterized in that... The locking point II is provided with a bracket II (203) for connecting the door panel, and a second elastic element is provided between the bracket II and the drive rod at the locking point II to provide elastic force so that the lock tongue at the locking point II tends to extend out of the door panel.

19. The linkage lock according to claim 18, characterized in that... The bracket II is provided with a rotating shaft (2033) whose axis is parallel to the axis of the spindle. The rotating shaft passes through the drive rod at the locking point II. The second elastic element surrounds the rotating shaft and its two ends are respectively connected to the bracket II and the drive rod at the locking point II.

20. The linkage lock according to claim 19, characterized in that... A hollow convex shell (2022) is provided on the drive rod at locking point II. The rotating shaft (2033) passes through the convex shell along its axial direction and a limiting nut (2034) is installed at its end. The torsion spring (2035), which is the second elastic element, is located inside the convex shell and its two ends are connected to the convex shell and the bracket II, respectively.

21. A device comprising a door panel and a frame, characterized in that... The linkage lock as described in any one of claims 1-20 is installed on the door panel and the frame. When the linkage lock is in the closed state, the door panel is closed on the frame; when the linkage lock is in the open state, the door panel can be opened from the frame.

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