A concealed connecting assembly, cabinet body assembling assembly and assembling method of the same

Abstract

The application discloses a hidden connecting assembly, a cabinet body assembling assembly and an assembling method of a spliced cabinet. In the hidden connecting assembly, a connecting rod is installed on a first object and extends along a splicing direction, and the connecting rod is provided with a controlled part, a limiting head and an abutting part; the controlled part is suitable for accepting external force operation and moving the connecting rod along the extending direction of the connecting rod; the limiting head is suitable for extending out of or retracting into a first splicing surface, and when the limiting head extends out, the limiting head enters a second installation part; the abutting part is suitable for acting on the first object towards the second object when the limiting head is located at a first position in the second installation part; a locking piece is suitable for being installed on the second installation part and is limited by the second installation part to move along a parallel extending direction, and the locking piece is also suitable for moving linearly or rotating along a vertical extending direction and locking or unlocking the limiting head at the first position. The cabinet body assembling assembly and the assembling method of the spliced cabinet are both based on the hidden connecting assembly. The technical scheme has the advantages of low installation difficulty, high installation efficiency and good aesthetic effect of the spliced cabinet.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of furniture mounting connectors, in particular to a hidden connection assembly, a cabinet body assembling assembly and an assembling method of a spliced cabinet. BACKGROUND

[0002] Spliced furniture gradually becomes popular in the market due to its rich functions, high space utilization rate and convenient transportation and assembly. Figure 1 As shown in the figure, in the prior art, each furniture body in the spliced furniture is generally connected by a three-in-one eccentric connector (including an eccentric wheel, a screw rod and a pre-buried nut), wherein the pre-buried nut is buried in one of the two adjacent furniture bodies, the screw rod is screwed with the pre-buried nut and partially protrudes from the splicing surface of the furniture body, and the eccentric wheel is installed on the other of the two adjacent furniture bodies and connected between the two adjacent furniture bodies by rotating and clamping the protruding part of the screw rod. During installation, the protruding part of the screw rod increases the size of each furniture body in the splicing direction, so each furniture body cannot be placed between the two parallel walls in advance, but needs to be placed between the two walls as a whole after splicing and locking by the eccentric wheel. Since the weight of the spliced furniture after complete assembly is generally large, there are problems of great difficulty and time-consuming and laborious operation. In addition, the connection of the three-in-one eccentric connector is prone to loosening and tooth loss due to moving, which may cause gaps between the furniture bodies and damage the three-in-one eccentric connector due to misplacement of the plate. To address the above risks, the prior art attempts to use a large number of three-in-one eccentric connectors in combination with wooden dowels to avoid the above risks, but this undoubtedly increases the installation cost and affects the installation efficiency, and cannot completely avoid the above risks. In addition, the prior art also has a technical solution of placing each furniture body in place in advance and then locking each adjacent furniture body by self-tapping screws. However, this solution has problems of damaging the plate structure, affecting the performance of the plate and poor aesthetic effect, and therefore needs to be improved. SUMMARY

[0003] The present application aims to overcome the above-mentioned defects or problems in the background art, and provides a hidden connection assembly, a cabinet body assembling assembly and an assembling method of a spliced cabinet, which allows each cabinet body in the spliced cabinet to be placed and spliced in place at a predetermined position, and then connected to each adjacent cabinet body, thereby reducing the installation difficulty, improving the installation efficiency, reliably splicing each adjacent cabinet body and ensuring the integrity of each cabinet body. Further, the spliced cabinet connected by the hidden connection assembly has good aesthetic effect.

[0004] In order to achieve the above object, the following technical solutions are adopted:

[0005] The first technical solution is a hidden connection assembly for connecting a first object and a second object which are spliced with each other, the first object has a first splicing surface and a first mounting portion which is perpendicular to the first splicing surface, the second object has a second splicing surface and a second mounting portion which is perpendicular to the second splicing surface, and the hidden connection assembly comprises a connecting rod which is adapted to be mounted in the first mounting portion and extends perpendicularly to the first splicing surface, the connecting rod is provided with a controlled portion, a limiting head and an abutting portion, the controlled portion is adapted to be operated by an external force and to move the connecting rod along its extending direction, the limiting head is located at one end of the connecting rod which faces the second object, and is adapted to protrude out of or retract into the first splicing surface, when protruding out, the limiting head enters the second mounting portion from the second splicing surface, and the abutting portion is adapted to act on the first object towards the second object when the limiting head is located at a first position in the second mounting portion, a locking member is adapted to be mounted in the second mounting portion and is limited by the second mounting portion to move along a direction which is parallel to the extending direction, and is further adapted to move linearly or rotate along a direction which is perpendicular to the extending direction, and to lock or unlock the limiting head at the first position.

[0006] The second technical solution is based on the first technical solution, and further comprises an operating member, the operating member is adapted to be mounted in the first mounting portion and to rotate around an axis which is perpendicular to the extending direction, and is provided with a first operating portion and an actuating portion, the first operating portion is for tool operation, the actuating portion is shaped like a gear, and the controlled portion is shaped like a rack which is engaged with the actuating portion.

[0007] The third technical solution is based on the second technical solution, and the locking member is adapted to rotate around an axis which is perpendicular to the extending direction between a second position and a third position, and is provided with a second operating portion and a clamping portion, the second operating portion is for tool operation, the clamping portion is provided with a clamping groove, the clamping groove is provided with a first groove segment, a second groove segment and a third groove segment which are communicated with each other, the first groove segment and the second groove segment are both penetrated from the outer side wall of the clamping portion to the third groove segment along the radial direction, the first groove segment is adapted to unlock the limiting head and allow the limiting head to pass through and enter or exit the third groove segment when the locking member is at the second position, and the second groove segment is adapted to allow the locking member to rotate from the second position to the third position when the limiting head is located in the third groove segment, and to limit the limiting head from coming out to lock the limiting head when reaching the third position.

[0008] The fourth technical solution is based on the third technical solution, and when the locking member rotates from the second position to the third position, the clamping portion drives the limiting head to move a preset distance in a direction which is away from the first object.

[0009] Based on the technical solution two, technical solution three or technical solution four, there is also a technical solution five, in which the rotation axis of the operating member and the rotation axis of the locking member are parallel.

[0010] Based on the technical solution two, technical solution three or technical solution four, there is also a technical solution six, which further includes a limiting member; the limiting member is adapted to be fixed to the first object and cooperates with the first object to limit the movement of the operating member along the direction of its rotation axis, is sleeved on the outer periphery of the operating member and allows the operating member to rotate, has a first opening at one end for the operating member to be inserted, has a second opening at the other end for the end face of the first operating part to be exposed, has an abutting face on the inner wall for limiting the operating member from being pulled out of the second opening, and has a notch on the side wall for the actuating part to be exposed.

[0011] Based on the technical solution six, there is also a technical solution seven, in which the controlled part includes a plurality of straight teeth arranged at intervals along the extension direction of the connecting rod; each straight tooth is annularly shaped in the circumferential direction.

[0012] Based on the technical solution seven, there is also a technical solution eight, in which the abutting part is provided at one end of the controlled part away from the limiting head, is annularly shaped as a flange and is adapted to abut against the outer wall of the limiting member when the limiting head is in the first position.

[0013] Based on the technical solution eight, there is also a technical solution nine, in which the outer side wall of the limiting member is provided with a limiting face at the side of the notch; the limiting face is for the end face of the abutting part to abut against.

[0014] Based on the technical solution six, there is also a technical solution ten, in which the outer side wall of the limiting member is provided with a protruding rib extending in the axial direction thereof.

[0015] Based on the technical solution three, there is also a technical solution eleven, in which the end face of the first operating part and the end face of the second operating part are each provided with a one-bar type groove or a cross type groove.

[0016] Technical solution twelve, a cabinet assembly, comprising at least two cabinets and the hidden connection assembly according to any one of the technical solutions three to eleven; each of the cabinets is transversely connected and has two side plates and a horizontal plate; the outer surface of at least one of the side plates of the cabinet constitutes a connecting surface, and at least one of the horizontal plates constitutes a mounting plate; the mounting plates of any two adjacent cabinets correspond in the transverse direction; any two adjacent cabinets are defined as a first cabinet and a second cabinet, which constitute the first object and the second object, respectively; the first cabinet is provided with a first connecting hole extending in the transverse direction from the connecting surface to the mounting plate and a first mounting hole extending vertically from the surface of the mounting plate and communicating with the first connecting hole; the second cabinet is provided with a second connecting hole extending in the transverse direction from the connecting surface to the mounting plate and a second mounting hole extending vertically from the surface of the mounting plate and communicating with the second connecting hole; the connecting rod is slidably arranged in the first connecting hole and is adapted to receive an external force provided from the first mounting hole and move between a fourth position and a fifth position, the limiting head facing the second connecting hole; in the fourth position, the connecting rod is hidden in the first connecting hole; in the fifth position, the limiting head enters the second connecting hole, and the abutting portion abuts against the first cabinet towards the second cabinet; the locking member is mounted in the second mounting hole.

[0017] Based on technical solution twelve, technical solution thirteen is also provided, in which the first cabinet and the second cabinet are connected by at least two groups of the hidden connection assembly in the vertical direction.

[0018] Based on technical solution thirteen, technical solution fourteen is also provided, in which each of the hidden connection assemblies is mounted on the front side of the first cabinet and the second cabinet.

[0019] Fifteenth, a method for assembling a splicing cabinet using the hidden connection assembly according to any one of the first to eleventh aspects, the splicing cabinet comprising at least two cabinet bodies, each of the cabinet bodies being assembled along a transverse direction between two parallel vertical planes, each of the cabinet bodies having a side plate and a horizontal plate, an outer surface of at least one of the side plates of the cabinet bodies constituting a splicing surface, and at least one of the horizontal plates constituting a mounting plate, any two adjacent cabinet bodies being defined as a first cabinet body and a second cabinet body, and constituting the first object and the second object, respectively, the method comprising the following steps: opening a first connecting hole in the first cabinet body, the first connecting hole extending transversely from the splicing surface to the mounting plate, and opening a first mounting hole in the mounting plate, the first mounting hole extending vertically from a surface of the mounting plate to the first connecting hole; opening a second connecting hole in the second cabinet body, the second connecting hole extending transversely from the splicing surface to the mounting plate, and opening a second mounting hole in the mounting plate, the second mounting hole extending vertically from a surface of the mounting plate to the second connecting hole; mounting the connecting rod in the first connecting hole and hiding the connecting rod in the first connecting hole; mounting the locking member in the second mounting hole; placing each of the cabinet bodies in a predetermined position between the two vertical planes; driving the connecting rod to move from the first mounting hole to the limiting head entering the second connecting hole; and driving the locking member to move to lock the limiting head.

[0020] Compared with the prior art, the above-mentioned scheme has the following beneficial effects:

[0021] 1. In the first technical solution, the connecting rod is installed on the first object and can move back and forth along its extension direction. In practical application, the connecting rod can be controlled to move into the first object, and on this basis, the size of the first object and the second object in the splicing direction is the sum of the sizes of the two objects in the splicing direction. The connecting rod does not occupy space in the splicing direction, so the first object and the second object can be pre-installed in place respectively in a limited installation space, and then the limiting head is extended into the second mounting part by controlling the connecting rod, and the locking member is driven to move to lock the limiting head, thereby realizing the connection of the first object and the second object in the splicing direction. In this process, the first object and the second object are pre-installed separately to the predetermined spatial position, which avoids the need to assemble in advance and then move to the installation position. Since the weight of the separate first object or second object is much smaller than the weight of the fully assembled first object and second object, the operation is difficult, the labor cost is small, and the installation efficiency is high, thereby facilitating the control of installation cost. In addition, during installation, the positions of the first object and the second object are fixed, and the hidden connection assembly will not loosen, fail to connect, or damage the structure of the first object and the first object due to misalignment between the first object and the second object. Therefore, a small number of hidden connection assemblies can achieve reliable connection between the first object and the second object, and ensure that the spliced part of the first object and the second object after connection is not prone to have a large gap to form a good aesthetic appearance. Since the hidden connection assembly can be hidden in the first object and the second object, the appearance of the product can be further ensured. Based on the above functions, the hidden connection assembly provided by the present technical solution has good application prospects.

[0022] 2. In the second technical solution, the actuating part on the operating member engages with the controlled part on the connecting rod, so that the connecting rod can be driven to move back and forth along its extension direction by rotating the operating member. The transmission function is reliable, the structure is simple, and the operation is convenient.

[0023] 3. In the third technical solution, the clamping groove includes a first groove segment, a second groove segment, and a third groove segment. When the locking member is in the second position, the first groove segment is located in the extension direction of the connecting rod. Thus, after the operating member is rotated, the connecting rod can move towards the clamping part and make the limiting head on it pass through the first groove segment and enter the third groove segment. During the rotation of the locking member from the second position to the third position, the groove wall of the third groove segment always abuts against the limiting head, and the second groove segment avoids the connecting rod. When the locking member is in the third position, the limiting head cannot be withdrawn towards the first object under the abutment of the groove wall of the third groove segment. At this time, the hidden connection assembly reliably connects the first object and the second object and makes the splicing surface of the first object and the splicing surface of the second object abut against each other.

[0024] 4. In the fourth technical solution, when the locking piece rotates from the second position to the third position, the clamping part drives the limiting head to move a preset distance away from the first object from the first position. In actual application, the preset distance can be set based on the gap between the first object and the second object, so that the clamping part pulls the first object to the side of the second object during the rotation from the second position to the third position, thereby reducing the gap between the first object and the second object, allowing the first object and the second object to be effectively attached, thereby improving the aesthetics of the product after installation.

[0025] 5. In the fifth technical solution, the rotation axis of the operating piece and the rotation axis of the locking piece are parallel, which is conducive to the operating end of the operating piece and the operating end of the locking piece facing the same direction, thereby facilitating the operator to operate; in addition, it is also conducive to hiding to a certain extent.

[0026] 6. In the sixth technical solution, the limiting piece is fixed to the first object, which cooperates with the first object to limit the movement of the operating piece along the direction of the rotation axis, which limits the operating piece from being separated from the first object along the axial direction, and allows the operating piece to rotate. Therefore, during actual operation, there is no problem of large resistance and difficult operation when the operating piece is rotated within a large angle range; the side wall of the limiting piece is provided with a notch, which can expose the actuating part of the operating piece to ensure that the actuating part can engage with the controlled part of the connecting rod.

[0027] 7. In the seventh technical solution, each straight tooth in the controlled part is formed in an annular shape, so that the installation of the connecting rod on the first object does not need to position the position in the circumferential direction, that is, after the connecting rod is installed in place in the first object, no matter how it rotates around its axis, it can ensure that the actuating part engages with the controlled part thereon, thereby avoiding the design of positioning structure, simplifying the structure design difficulty, and reducing the installation difficulty.

[0028] 8. In the eighth technical solution, the abutting part is provided with one end of the controlled part, which is conducive to avoiding designing the connecting rod too long and saving materials. The abutting part is formed in an annular flange, which can also form an abutting cooperation with the limiting piece without limiting the position in the circumferential direction of the connecting rod. The limiting piece is used to form an abutting cooperation with the abutting part, which is conducive to reducing the structural complexity. Specifically, since the function of the abutting part is to abut against the first object so that the first object can be close to the side of the second object, in order to meet this function, the hole in the first object for installing the connecting rod needs to be provided with a surface for the abutting part to abut against. Therefore, directly setting the surface for the abutting part to abut against on the first object will inevitably increase the difficulty of opening the hole in the first object. Therefore, the abutting cooperation between the limiting piece in a fixed relationship with the first object and the abutting part is conducive to greatly reducing the structural complexity, thereby ensuring the processing efficiency.

[0029] 9. In the ninth technical solution, the outer side wall of the limiting piece is provided with a limiting surface at the side of the gap, and the end surface of the abutting part can abut against the limiting surface, so that the abutting cooperation between the abutting part and the limiting piece is more reliable.

[0030] 10. In the tenth technical solution, the outer side wall of the limiting piece is provided with a protruding rib extending in the axial direction, which is beneficial to form a rotation-stopping cooperation with the first object, so as to ensure that the limiting piece cannot be loosened by being driven to rotate by the operating piece.

[0031] 11. In the eleventh technical solution, the end surface of the first operating part and the end surface of the second operating part are each provided with a one-bar type groove or a cross type groove, which is beneficial to place a tool and implement a rotating operation, and in addition, the design form of the operating end does not occupy too much space, so it is beneficial to realize the hiding of the operating piece and the locking piece.

[0032] 12. In the twelfth technical solution, the cabinet body assembly uses the hidden connection assembly in the above technical solutions, so it inherits all the advantages of the hidden connection assembly, and it allows the cabinet bodies to be placed in position at a specific installation position and then connected, thereby greatly reducing the installation difficulty and the labor intensity of the installation personnel, making the installation more convenient, so as to effectively improve the installation efficiency.

[0033] 13. In the thirteenth technical solution, by providing at least two groups of hidden connection assemblies, the first cabinet body and the second cabinet body have good connection strength, and the connection uniformity of the first cabinet body and the second cabinet body in the vertical direction is improved, so that the spliced part of the first cabinet body and the second cabinet body does not have too large gaps at each position in the vertical direction.

[0034] 14. In the fourteenth technical solution, each hidden connection assembly is installed on the front side of the first cabinet body and the second cabinet body, which can better reduce the gap of the front side of the first cabinet body and the second cabinet body to improve the aesthetics, and is also beneficial to facilitate the installation and operation of the installation personnel.

[0035] 15. In the fifteenth technical solution, the spliced cabinet using the hidden connection assembly has a relatively simple hole opening process and installation process. BRIEF DESCRIPTION OF DRAWINGS

[0036] In order to more clearly illustrate the technical solutions of the embodiments, the following briefly introduces the drawings needed to be used:

[0037] Figure 1 It is a schematic view of the connection structure of the spliced cabinet in the prior art;

[0038] Figure 2 It is a schematic view of the exploded structure of the hidden connection assembly of the present application;

[0039] Figure 3Structure diagram of connecting rod in hidden connecting assembly of the present application;

[0040] Figure 4 Structure diagram of operating member in hidden connecting assembly of the present application;

[0041] Figure 5 Structure diagram of limiting member in hidden connecting assembly of the present application;

[0042] Figure 6 Side view of limiting member in hidden connecting assembly of the present application;

[0043] Figure 7 Structure diagram of cross section of limiting member in hidden connecting assembly of the present application;

[0044] Figure 8 Structure diagram of locking member in hidden connecting assembly of the present application;

[0045] Figure 9 Structure diagram of hidden connecting assembly of the present application;

[0046] Figure 10 Structure diagram of partial structure of assembled cabinet of the present application;

[0047] Figure 11 Structure diagram of partial structure of assembled cabinet of the present application.

[0048] Main figure mark explanation:

[0049] Hidden connecting assembly 100; connecting rod 1; abutting part 11; controlled part 12; limiting head 13; outer rod 101; inner rod 102; operating member 2; first operating part 21; first recess 211; actuating part 22; locking member 3; second operating part 31; second recess 311; clamping part 32; clamping groove 321; third groove section 3211; limiting member 4; first opening 41; second opening 42; abutting surface 43; notch 44; limiting surface 45; convex rib 46;

[0050] First cabinet body 200; first connecting hole 2001; first mounting hole 2002;

[0051] Second cabinet body 300; second connecting hole 3001; second mounting hole 3002. DETAILED DESCRIPTION

[0052] In the claims and specification, unless otherwise defined, the terms "first", "second", or "third" and the like, are used merely as labels to distinguish between different objects, and are not intended to signify a particular order or sequence.

[0053] Unless otherwise specified, in the claims and description, the terms “center,” “lateral,” “longitudinal,” “horizontal,” “vertical,” “top,” “bottom,” “inner,” “outer,” “upper,” “lower,” “front,” “rear,” “left,” “right,” “clockwise,” “counterclockwise,” etc., indicate the orientation or positional relationship based on the orientation and positional relationship shown in the drawings, and are only for the purpose of simplifying the description, and do not imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation.

[0054] Unless otherwise specified in the claims and description, the terms "fixed connection" or "fixed connection" shall be interpreted broadly to mean any connection in which there is no displacement or relative rotation relationship between the two parties, including non-removable fixed connection, detachable fixed connection, integral connection, and fixed connection by other means or components.

[0055] Unless otherwise specified, the terms “comprising,” “having,” and variations thereof in the claims and description shall mean “including but not limited to.”

[0056] The technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings.

[0057] 100 Examples of Concealed Connection Components

[0058] See Figures 2 to 9 , Figures 2 to 9 The concealed connection component 100 of this embodiment is shown. The concealed connection component 100 provided in this embodiment is used to connect a first object and a second object that are spliced ​​together. The first object has a first splicing surface and a first mounting portion perpendicular to the first splicing surface; the second object has a second splicing surface and a second mounting portion perpendicular to the second splicing surface. It should be understood that the first object and the second object are spliced ​​together by abutting the first splicing surface and the second splicing surface against each other.

[0059] In this embodiment, the concealed connection assembly 100 includes a connecting rod 1, an operating component 2, a locking component 3, and a limiting component 4.

[0060] The connecting rod 1 is adapted to be installed in the first mounting part of the first object and extends along the vertical first splicing surface. The connecting rod 1 is hidden on the first object and is provided with an abutment part 11, a controlled part 12 and a limiting head 13.

[0061] Specifically, see Figure 3The connecting rod 1 is a straight rod; the abutting portion 11 is arranged at one end of the connecting rod 1 and is located away from one end of the controlled portion 12 away from the limiting head 13, the abutting portion 11 is shaped as an annular flange, which is used to act on the first object from the second object side along the splicing direction, so that the first object can be attached to the side where the second object is located; the controlled portion 12 is suitable for receiving external force operation and moving the connecting rod 1 along its extension direction, in actual application, the external force can directly drive the connecting rod 1 by controlling the controlled portion 12, or the external force can be transmitted to the controlled portion 12 through an intermediate transmission component, thereby driving the connecting rod 1, it is worth noting that when the external force directly controls the controlled portion 12, an operation hole along the extension direction of the connecting rod 1 needs to be arranged on the first mounting portion, the operation hole needs to occupy a large length dimension, so it may affect the structure and use of the first mounting portion, and when the external force is transmitted to the controlled portion 12 through the intermediate transmission component, the hole with large size occupation can be avoided based on the transmission relationship, the example provided in the embodiment selects the second mode, specifically, the controlled portion 12 is shaped as a rack, which includes a plurality of straight teeth arranged at intervals along the extension direction of the connecting rod 1, the operating member 2 constitutes an intermediate transmission component, each straight tooth on the connecting rod 1 is used to transmit and cooperate with the operating member 2 to realize driving the connecting rod 1 to move along the extension direction by the operating member 2, in the embodiment, each straight tooth is shaped as an annular in the circumferential direction, in this way, the installation of the connecting rod 1 on the first object does not need to position the circumferential direction thereof, that is, after the connecting rod 1 is inserted into place on the first object, no matter how it rotates around its axis, it can ensure that the controlled portion 12 thereon is in meshing cooperation with the operating member 2, thereby avoiding the design of the positioning structure of the first object, simplifying the structure design difficulty, and reducing the installation difficulty; the limiting head 13 is arranged at one end of the connecting rod 1 away from the abutting portion 11, that is, at one end of the connecting rod 1 towards the second object, specifically, the limiting head 13 is in the shape of a semicircular ball head, which is suitable for extending or retracting from the first splicing surface, when it extends, it enters the second mounting portion from the second splicing surface, when the limiting head 13 is in the first position in the second mounting portion, it is suitable for being locked or unlocked by the locking piece 3, when it is locked, the locking piece 3 abuts and limits the movement of the side away from the second object towards the first object. In the embodiment, the connecting rod 1 can be integrally formed by metal material, or different materials can be used for fixed connection based on cost consideration, in the embodiment, the connecting rod 1 is composed of an outer rod 101 and an inner rod 102, the outer rod 101 is made of but not limited to PP material, and the abutting portion 11 and the controlled portion 12 are formed thereon, and a central hole is arranged along the extension direction thereof; the inner rod 102 is made of but not limited to metal material, one end thereof is fixedly inserted into the central hole of the outer rod 101 by screwing or gluing, and the other end thereof is shaped as the limiting head 13.

[0062] The operating member 2 is adapted to be mounted on the first object and adapted to rotate around an axis perpendicular to the extending direction of the connecting rod 1, and is provided with a first operating part 21 and an actuating part 22; the first operating part 21 is for tool operation; the actuating part 22 is shaped as a gear engaging with the controlled part 12 and adapted to drive the connecting rod 1 to move between the fourth position and the fifth position when rotating; in the fourth position, the connecting rod 1 is hidden in the first object, i.e. the limiting head 13 is retracted into the first splicing surface; in the fifth position, the limiting head 13 extends out of the first object and enters the first position of the second mounting part from the second splicing surface, and the abutting part 11 abuts against the first object towards the second object.

[0063] Specifically, referring to Figure 4 , the operating member 2 is a cylindrical structure, and the first operating part 21 and the actuating part 22 are arranged along the axial direction of the operating member 2 in sequence, and the end surface of the first operating part 21 is provided with a first groove 211 which is a one-letter type groove or a cross type groove for matching the tool to rotate the operating member 2 by the tool, and in the embodiment, the end surface of the first operating part 21 is provided with a cross type groove; the actuating part 22 is shaped as a gear engaging with the controlled part 12, and the straight teeth of the gear are uniformly distributed in the circumferential direction.

[0064] The locking member 3 is adapted to be mounted on the second mounting part to limit the movement of the second mounting part in the direction parallel to the extending direction, and is also adapted to move linearly or rotate in the direction perpendicular to the extending direction of the connecting rod 1, and to lock or unlock the limiting head 13 in the first position.

[0065] Specifically, in the embodiment, the locking member 3 is adapted to rotate around an axis perpendicular to the extending direction between the second position and the third position, and is provided with a second operating part 31 and a clamping part 32; the second operating part 31 is for tool operation; the clamping part 32 allows the limiting head 13 to pass through when in the second position, i.e. the limiting head 13 is in the unlocked state, and locks the limiting head 13 and limits the limiting head 13 to retreat to the fourth position when in the third position.

[0066] In actual application, the connecting rod 1 and the operating member 2 are installed on the first object, the locking member 3 is installed on the second object, the operating member 2 is rotated to move the limiting head 13 of the connecting rod 1 from the fourth position to the fifth position, that is, to move the connecting rod 1 to the position where the locking member 3 is located, then the locking member 3 is rotated to rotate from the second position to the third position, at this time, the limiting head 13 is limited by the clamping portion 32 and cannot retreat toward the first object side, thereby realizing the connection of the first object and the second object in the splicing direction, and the connection structure is simple and the operation is extremely convenient. More notably, the hidden connection assembly 100 provided in the embodiment can also improve the problem of difficult installation of the first object and the second object when installed in a limited space. Specifically, after the connecting rod 1 is installed on the first object, it can move back and forth along the extension direction thereof. In actual application, the connecting rod 1 is controlled to move to be hidden in the first object. On this basis, the size of the first object and the second object in the splicing direction is the sum of the sizes of the first object and the second object in the splicing direction, and the connecting rod 1 does not occupy space in the splicing direction. Therefore, the first object and the second object can be pre-installed in place respectively in a limited installation space, and then the connecting rod 1 is controlled to move to make the limiting head 13 extend into the second installation portion, and the locking member 3 is driven to rotate the clamping portion 32 from the second position to the third position to lock the limiting head 13 and limit the retreat of the limiting head 13 to the fourth position, thereby realizing the connection of the first object and the second object in the splicing direction. In this process, the first object and the second object are pre-installed to the predetermined space position separately, which avoids the need to assemble in advance and then move to the installation position. Since the weight of the separate first object or second object is much smaller than the weight of the fully assembled first object and second object, the difficulty of operation is small, the labor cost is small, and the installation efficiency is high, thereby being conducive to controlling the installation cost. In addition, during the installation process, the positions of the first object and the second object are fixed, and the hidden connection assembly 100 will not loosen, fail to connect, or damage the structure of the first object and the first object due to the misalignment of the first object and the second object with each other. Therefore, a smaller number of hidden connection assemblies 100 can be used to realize reliable connection between the first object and the second object, and ensure that there is no large gap at the spliced part of the first object and the second object after being connected in place to form a good aesthetic appearance. Since the hidden connection assembly 100 is hidden in the first object and the second object, the appearance of the product can be further guaranteed. Based on the realization of the above functions, the hidden connection assembly 100 provided in the embodiment has good application prospects, especially for the splicing of furniture cabinets or engineering cabinets. In the embodiment, the actuating portion 22 on the operating member 2 is engaged with the controlled portion 12 on the connecting rod 1, so that the connecting rod 1 can be moved back and forth along the extension direction thereof by rotating the operating member 2. The transmission function is reliable, the structure is simple, and the operation is convenient.

[0067] In a preferred embodiment, when the locking piece 3 rotates from the second position to the third position, the clamping portion 32 drives the limiting head 13 to move a preset distance away from the fourth position. In actual application, the preset distance can be set based on the existence of the gap between the first object and the second object, so that the clamping portion 32 pulls the first object to the side of the second object during the rotation of the clamping portion 32 from the second position to the third position, thereby reducing the gap between the first object and the second object, so that the first object and the second object can be more effectively attached, thereby further ensuring the aesthetic appearance of the product after installation.

[0068] Specifically, referring to Figure 8In the embodiment, the lock connecting piece 3 adopts the structure consistent with the eccentric wheel structure in the conventional three-in-one eccentric connecting piece, which is a cylindrical structure, and the second operation part 31 and the clamping part 32 are sequentially arranged along the axial direction thereof; the end face of the second operation part 31 is provided with a second groove 311, which is a one-word groove or a cross-shaped groove for matching the tool to realize the rotation of the operating piece 2 driven by the tool; in the embodiment, the end face of the second operation part 31 is provided with a cross-shaped groove like the end face of the first operation part 21, which does not occupy too much space and is thus conducive to the hiding of the operating piece 2 and the lock connecting piece 3; the clamping part 32 is provided with a clamping groove 321, which is provided with a first groove section, a second groove section and a third groove section 3211 in communication with each other; the first groove section and the second groove section are both penetrated to the third groove section 3211 from the outer side wall of the clamping part 32 along the radial direction; the first groove section is used to allow the limiting head 13 of the connecting rod 1 to pass through and enter the third groove section 3211 when the lock connecting piece 3 is rotated to the second position, that is, the first groove section is located in the extension direction of the connecting rod 1 when the first groove section is rotated to the second position, so that after the operating piece 2 is rotated, the connecting rod 1 can be towards or away from the clamping part 32, and the limiting head 13 thereon passes through the first groove section and enters the third groove section 3211 or exits the third groove section 3211 and the first groove section; the second groove section is suitable for allowing the lock connecting piece 3 to rotate relative to the connecting rod 1 and limiting the limiting head 13 from coming out when the limiting head 13 is located in the third groove section 3211, specifically, when the lock connecting piece 3 rotates from the second position to the third position, the groove wall of the third groove section 3211 always abuts against the limiting head 13, and the second groove section avoids the connecting rod 1, when the lock connecting piece 3 is rotated to the third position, the limiting head 13 cannot retreat towards the first object under the abutment of the groove wall of the third groove section 3211, at this time, the hidden connecting assembly 100 reliably connects the first object and the second object and makes the splicing surface of the first object and the splicing surface of the second object abut against each other; it is worth noting that, in order to realize the function that the clamping part 32 can drive the limiting head 13 to continue moving a preset distance when the lock connecting piece 3 rotates from the second position to the third position, in the embodiment, the side groove wall of the third groove section 3211 for abutting against the limiting head 13 is shaped as an eccentric curved surface. In the embodiment, the limiting head 13 is formed on one end of the connecting rod 1, so that the limiting head 13 can be conveniently clamped with the clamping groove 321 of the clamping part 32. In addition, in the embodiment, the rotation shaft of the operating piece 2 is arranged to be parallel to the rotation shaft of the lock connecting piece 3, so that the operation end of the operating piece 2 and the operation end of the lock connecting piece 3 are arranged to face the same direction, which is conducive to the operation of the operating personnel and also conducive to the operation end of the operating piece 2 and the operation end of the lock connecting piece 3 facing the side of the first object and the second object which is not conducive to being observed by people, so as to realize the hiding.

[0069] The operation member 2 can be pre-buried and limited in the first object, or can be locked in the groove provided on the first object by interference fit and driven to rotate the operation member 2 by overcoming the friction force during use. However, the above installation method has the problems of complex installation structure, high installation difficulty or inconvenient operation. Therefore, the embodiment further provides an installation and operation convenient embodiment for the operation member 2. Specifically, the hidden connection assembly 100 further comprises a limiting member 4. The limiting member 4 is adapted to be fixedly connected to the first object and cooperates with the first object to limit the movement of the operation member 2 along the direction of the rotation axis thereof. The limiting member 4 is sleeved on the outer periphery of the operation member 2 and allows the operation member 2 to rotate. One end of the limiting member 4 is provided with a first opening 41 for the operation member 2 to be inserted into. The other end of the limiting member 4 is provided with a second opening 42 for the end face of the first operation part 21 to be exposed. The inner wall of the limiting member 4 is provided with an abutting surface 43 for limiting the operation member 2 from being pulled out of the second opening 42. The side wall of the limiting member 4 is provided with a notch 44 for the actuating part 22 to be exposed.

[0070] Specifically, referring to Figures 5-7 , the limiting member 4 is in a cylindrical shape. The first end of the limiting member 4 is provided with the first opening 41. The second end of the limiting member 4 is provided with the second opening 42. The inner wall of the second end of the limiting member 4 is further provided with the abutting surface 43. The side surface of the limiting member 4 is provided with the notch 44. In actual application, the first object can be provided with an installation groove for installing the operation member 2 and the limiting member 4. During installation, the operation member 2 is first inserted into the installation groove and the first operation part 21 is ensured to face the slot of the installation groove. Then, the limiting member 4 is inserted into the installation groove and sleeved on the outer periphery of the operation member 2 by interference fit under the condition that the first opening 41 of the limiting member 4 is aligned with the operation member 2. At this time, the abutting surface 43 on the operation member 2 can limit the operation member 2 from being pulled out of the slot of the installation groove. The actuating part 22 of the operation member 2 can be exposed through the notch 44 and can be engaged with the controlled part 12 on the connecting rod 1. Since the first operation part 21 faces the second opening 42, the operator can easily operate the first operation part 21 with the aid of a tool.

[0071] In the embodiment, the connecting rod 1 in the fifth position is limited to abut against the outer wall of the limiting member 4 by the fixed connection relationship between the limiting member 4 and the first object. In this way, it is beneficial to reduce the structural complexity of the first object. Specifically, since the abutting part 11 is used to abut against the first object to allow the first object to move towards the second object, in order to meet this function, the hole of the first object for installing the connecting rod 1 needs to be provided with a surface for the abutting part 11 to abut against. Directly providing the surface for the abutting part 11 to abut against on the first object will inevitably increase the difficulty of opening the hole of the first object. Therefore, the abutting part 11 is abutted by the limiting member 4 which is in a fixed connection relationship with the first object, which is beneficial to greatly reduce the structural complexity and ensure the processing efficiency.

[0072] In a preferred embodiment, the outer wall of the limiting member 4 is provided with a limiting surface 45 on the side of the notch 44. The limiting surface 45 is used for the end face of the abutting part 11 to abut, making the abutting fit between the abutting part 11 and the limiting member 4 more reliable. More preferably, the outer wall of the limiting member 4 can be provided with limiting surfaces 45 on both sides of the notch 44. In this way, the limiting member 4 can be applied to more working conditions. That is, in the actual installation environment, no matter which side of the limiting member 4 the abutting part 11 is located on, the limiting member 4 can reliably provide abutment for the abutting part 11.

[0073] In addition, in this embodiment, the outer side wall of the limiting member 4 is provided with a protruding rib 46 extending along its axial direction. The protruding rib 46 is conducive to forming an anti-rotation fit with the first object, thereby ensuring that the limiting member 4 will not be driven by the operating member 2 to rotate and become loose from the first object.

[0074] Cabinet assembly example

[0075] See Figures 10 to 11 , Figures 10 to 11 The cabinet assembly of this embodiment is shown. The cabinet assembly provided in this embodiment includes at least two cabinets and a concealed connection component 100.

[0076] Each cabinet is horizontally spliced ​​together and has two side panels and a horizontal panel. The outer surface of at least one side panel of the cabinet forms the splicing surface, that is, each cabinet is spliced ​​with other cabinets through the outer surface of its side panel. At least one horizontal panel of the cabinet forms the mounting plate. The horizontal panel can be a shelf, top panel or bottom panel of the cabinet. In this embodiment, the concealed connection component 100 can be installed on any horizontal panel of the cabinet. The mounting plates of any two adjacent cabinets are horizontally aligned.

[0077] Define any two adjacent cabinets as the first cabinet 200 and the second cabinet 300, which respectively constitute the first object and the second object; it should be understood that the mounting plate of the first cabinet 200 constitutes the first mounting part, the side of the first cabinet 200 used to splice with the second cabinet 300 constitutes the first splicing surface, the mounting plate of the second cabinet 300 constitutes the second mounting part, and the side of the second cabinet 300 used to splice with the first cabinet 200 constitutes the second splicing surface.

[0078] The first cabinet 200 is provided with a first connecting hole 2001 extending laterally from its splicing surface (i.e., the first splicing surface) to its mounting plate (i.e., the first mounting part) and a first mounting hole 2002 extending vertically from the surface of its mounting plate to communicate with the first connecting hole 2001; the second cabinet 300 is provided with a second connecting hole 3001 extending laterally from its splicing surface (i.e., the second splicing surface) to its mounting plate (i.e., the second mounting part) and a second mounting hole 3002 extending vertically from the surface of its mounting plate to communicate with the second connecting hole 3001.

[0079] The connecting rod 1 is slidably arranged in the first connecting hole 2001, which is adapted to receive an external force provided from the first mounting hole 2002 and is movable between a fourth position and a fifth position, and the limiting head 13 faces the second connecting hole 3001; when the connecting rod 1 slides to the fourth position, the connecting rod 1 is hidden in the first connecting hole 2001; when the connecting rod 1 slides to the fifth position, the limiting head 13 enters the second connecting hole 3001, and the abutting portion 11 abuts against the first cabinet 200 on the side where the second cabinet 300 is located.

[0080] The operating member 2 is rotatably arranged in the first mounting hole 2002; the end surface of the first operating portion 21 faces the port of the first mounting hole 2002; and the actuating portion 22 is engaged with the controlled portion 12. Specifically, based on the implementation of the hidden connecting assembly 100 provided in the embodiment, the operating member 2 is rotatably and limitingly arranged in the first mounting hole 2002 by the limiting member 4.

[0081] The locking member 3 is arranged in the second mounting hole 3002; specifically, based on the structure provided in the embodiment of the hidden connecting assembly 100, the locking member 3 is rotatably arranged in the second mounting hole 3002; the end surface of the second operating portion 31 faces the port of the second mounting hole 3002; and the clamping portion 32 is adapted to rotate from a second position to a third position when the limiting head 13 enters the second connecting hole 3001, and limit the limiting head 13 from moving away from the first connecting hole 2001 and abutting the first cabinet 200 and the second cabinet 300 by pulling the connecting rod 1.

[0082] In the example provided in the embodiment, when the floor and the bottom plate are selected as the mounting plate, the first mounting hole 2002 and the second mounting hole 3002 are upwardly open; when the top plate is selected as the mounting plate, the first mounting hole 2002 and the second mounting hole 3002 can be downwardly open, so that the operator can conveniently observe and operate the operating member 2 and the locking member 3; it should be noted that the first mounting hole 2002 and the second mounting hole 3002 are arranged to be upwardly open, and since the operating member 2, the locking member 3 and the bottom of the limiting member 4 are all supported, the stability of the operating member 2, the locking member 3 and the limiting member 4 in the vertical direction is improved.

[0083] Preferably, in the embodiment, the first cabinet 200 and the second cabinet 300 are connected by at least two groups of hidden connecting assemblies 100 in the vertical direction, and each hidden connecting assembly 100 is arranged on the front side of the first cabinet 200 and the second cabinet 300; it should be understood that the front side refers to the side of the cabinet facing the human body.

[0084] The cabinet assembling assembly provided by the embodiment uses the hidden connecting assembly 100, and thus inherits all advantages of the hidden connecting assembly 100. The cabinet assembling assembly allows the cabinets to be placed in position at specific installation positions and then connected, thereby greatly reducing the installation difficulty and labor intensity of the installer, making the installation more convenient, and thus effectively improving the installation efficiency. By arranging at least two groups of the hidden connecting assembly 100, the first cabinet 200 and the second cabinet 300 have good connection strength, and the connection uniformity of the first cabinet 200 and the second cabinet 300 in the vertical direction is improved, so that the splicing position of the first cabinet 200 and the second cabinet 300 in the vertical direction does not have too large gaps. In addition, by arranging the hidden connecting assembly 100 on the front side of the first cabinet 200 and the second cabinet 300, the gap on the front side of the first cabinet 200 and the second cabinet 300 can be reduced to improve the appearance, and the installation and operation of the installer are facilitated.

[0085] Cabinet assembling method

[0086] The cabinet assembling method provided by the embodiment uses the hidden connecting assembly 100. The cabinet assembling method includes at least two cabinets. Each cabinet is assembled between two parallel vertical planes in the horizontal direction, and has a side plate and a horizontal plate. The outer surface of at least one side plate of the cabinet constitutes a splicing surface, and at least one horizontal plate constitutes an installation plate. Any two adjacent cabinets are defined as a first cabinet 200 and a second cabinet 300, and constitute a first object and a second object, respectively.

[0087] The specific cabinet assembling method includes the following steps:

[0088] The horizontal plates of the first cabinet 200 and the second cabinet 300 for installing the limiting member 4, the operating member 2, and the connecting rod 1 are selected as the installation plates.

[0089] The first cabinet 200 is provided with a first connecting hole 2001 extending from the splicing surface to the installation plate in the horizontal direction, and a first installation hole 2002 extending from the upper surface or the lower surface of the installation plate to the first connecting hole 2001 in the vertical direction.

[0090] The second cabinet 300 is provided with a second connecting hole 3001 extending from the splicing surface to the installation plate in the horizontal direction, and a second installation hole 3002 extending from the upper surface or the lower surface of the installation plate to the second connecting hole 3001 in the vertical direction.

[0091] The connecting rod 1 is installed in the first connecting hole and hidden in the first connecting hole 2001. Based on the structure provided by the hidden connecting assembly 100, the connecting rod 1 and the operating member 2 have a transmission connection relationship, so in this step, the installation of the operating member 2 is also included. Specifically, the connecting rod 1 and the operating member 2 are installed in the first connecting hole 2001 and the first mounting hole 2002 respectively, and the connecting rod 1 is located at the fourth position and hidden in the first connecting hole 2001. Specifically, the connecting rod 1 is inserted into the first connecting hole 2001 from the port on the splicing surface, the operating member 2 is placed into the first mounting hole 2002, and the limiting member 4 is placed into the first mounting hole 2002 by interference fit. When placing, the side of the notch 44 is directed to the side of the controlled part 12 to avoid the controlled part 12 and the actuating part 22 from cooperating with each other.

[0092] The locking member 3 is installed in the second mounting hole 3002 and located at the second position. Specifically, the locking member 3 is placed into the second mounting hole 3002 by interference fit, and then driven to rotate to the first groove section corresponding to the second connecting hole 3001 by overcoming the friction force with the aid of a tool.

[0093] The cabinet bodies are placed in the two vertical planes at the preset positions respectively.

[0094] The connecting rod 1 is driven to move from the first mounting hole 2002 to the second connecting hole 3001. Based on the existence of the operating member 2, this step is specifically: rotating the operating member 2 to drive the connecting rod 1 to move to the fifth position, at this time, the abutting part 11 on the connecting rod 1 abuts against the limiting surface 45 on the outer wall of the limiting member 4, the limiting head 13 extends into the second connecting hole 3001 and is located in the third groove section 3211.

[0095] The locking member 3 is driven to move and lock the limiting head 13, specifically, the locking member 3 is rotated from the second position to the third position, at this time, the clamping part 32 pulls the limiting head 13 and prevents it from retreating to the side of the first cabinet 200, and the first cabinet 200 is abutted to the second cabinet 300 by the pulling of the connecting rod 1. That is, the assembly is completed.

[0096] The assembly cabinet uses the hidden connecting assembly 100, and the opening process and the installation process are relatively simple.

[0097] The above description of the specification and the embodiments is used to explain the protection scope of the present application, but does not constitute a limitation on the protection scope of the present application.

Claims

1. A concealed connection assembly for connecting a first object and a second object which are spliced to each other, the first object having a first splicing surface and a first mounting portion which is perpendicular to the first splicing surface; the second object having a second splicing surface and a second mounting portion which is perpendicular to the second splicing surface; characterized in that, The application relates to a connecting device for connecting a first object and a second object, comprising: a connecting rod (1) adapted to be mounted in the first mounting part and extending perpendicularly to the first splicing surface, the connecting rod (1) being provided with a controlled part (12), a limiting head (13) and an abutting part (11); the controlled part (12) is adapted to be operated by external force and to move the connecting rod along the extending direction of the connecting rod; the limiting head (13) is located at one end of the connecting rod (1) facing the second object, and is adapted to protrude out of or retract into the first splicing surface; when protruding out, the limiting head (13) enters the second mounting part from the second splicing surface; the abutting part (11) is adapted to abut the first object towards the second object when the limiting head (13) is located at a first position in the second mounting part; a locking piece (3) adapted to be mounted in the second mounting part and limited to move along a direction parallel to the extending direction by the second mounting part, the locking piece (3) being further adapted to move linearly or rotate along a direction perpendicular to the extending direction, and to lock or unlock the limiting head (13) at the first position; the connecting device further comprises an operating piece (2); the operating piece (2) is adapted to be mounted in the first mounting part and to rotate around an axis perpendicular to the extending direction, and is provided with a first operating part (21) and an actuating part (22); the first operating part (21) is operated by a tool; the actuating part (22) is shaped like a gear; the controlled part (12) is shaped like a rack engaged with the gear; the connecting device further comprises a limiting piece (4); the limiting piece (4) is adapted to be fixed to the first mounting part and to limit the movement of the operating piece (2) along the extending direction of the rotating axis of the operating piece (2) in cooperation with the first mounting part, the limiting piece (4) being sleeved on the outer periphery of the operating piece (2) and allowing the operating piece (2) to rotate, one end of the limiting piece (4) being provided with a first opening (41) for the operating piece (2) to be inserted into, the other end of the limiting piece (4) being provided with a second opening (42) for the end surface of the first operating part (21) to be exposed, the inner wall of the limiting piece (4) being provided with an abutting surface (43) for limiting the operating piece (2) from being taken out of the second opening (42), and the side wall of the limiting piece (4) being provided with a notch (44) for the actuating part (22) to be exposed.

2. A concealed connection assembly as claimed in claim 1, characterised in that, the locking piece (3) is adapted to rotate around an axis perpendicular to the extending direction to a second position and a third position, and is provided with a second operating part (31) and a clamping part (32); the second operating part is operated by a tool; the clamping part (32) is provided with a clamping groove; the clamping groove (321) is provided with a first groove segment, a second groove segment and a third groove segment (3211) which are communicated with each other; the first groove segment and the second groove segment are both penetrated into the third groove segment (3211) from the outer side wall of the clamping part (32) along the radial direction; the first groove segment is adapted to unlock the limiting head (13) and allow the limiting head (13) to pass through and enter or exit the third groove segment (3211) when the locking piece is at the second position; the second groove segment is adapted to allow the locking piece (3) to rotate from the second position to the third position when the limiting head (13) is located in the third groove segment (3211), and to limit the limiting head (13) from being taken out to lock the limiting head (13) when reaching the third position.

3. A concealed connection assembly as defined in claim 2, wherein, When the locking piece (3) rotates from the second position to the third position, the clamping portion (32) drives the limiting head (13) to move a preset distance away from the first object.

4. A concealed connection assembly as claimed in claim 1, 2 or 3, wherein, The rotation axis of the operating piece (2) is parallel to the rotation axis of the locking piece (3).

5. A concealed connection assembly as defined in claim 1, wherein, The controlled portion (12) comprises a plurality of straight teeth arranged at intervals along the extension direction of the connecting rod (1); each straight tooth is annular in circumferential direction.

6. A concealed connection assembly as claimed in claim 5, wherein, The abutting portion (11) is arranged at one end of the controlled portion (12) away from the limiting head (13), is annular in shape, and is adapted to abut against the outer wall of the limiting piece (4) when the limiting head (13) is in the first position.

7. A concealed connection assembly as claimed in claim 6, wherein, The outer side wall of the limiting piece (4) is provided with a limiting surface (45) on the side of the gap (44); the end surface of the abutting portion (11) abuts against the limiting surface (45).

8. A concealed connection assembly as defined in claim 1, wherein, The outer side wall of the limiting piece (4) is provided with a protruding rib (46) extending in the axial direction.

9. A concealed connection assembly as defined in claim 2, wherein, The end surface of the first operating portion (21) and the end surface of the second operating portion (31) are each provided with a one-bar groove or a cross-shaped groove.

10. A cabinet assembly, characterized in that, The hidden connection assembly (100) according to any one of claims 1 to 9 is applied to at least two cabinet bodies. Each cabinet body is transversely spliced, and each cabinet body has two side plates and a horizontal plate; the outer surface of at least one side plate of the cabinet body constitutes a splicing surface, and at least one horizontal plate constitutes a mounting plate; the mounting plates of any two adjacent cabinet bodies correspond in the transverse direction. Any two adjacent cabinet bodies are defined as a first cabinet body (200) and a second cabinet body (300), which constitute the first object and the second object, respectively; the first cabinet body (200) is provided with a first connecting hole (2001) extending transversely from the splicing surface to the mounting plate and a first mounting hole (2002) extending vertically from the surface of the mounting plate and communicating with the first connecting hole (2001); the second cabinet body (300) is provided with a second connecting hole (3001) extending transversely from the splicing surface to the mounting plate and a second mounting hole (3002) extending vertically from the surface of the mounting plate and communicating with the second connecting hole (3001); The connecting rod (1) is slidably arranged in the first connecting hole (2001), is adapted to receive an external force provided from the first mounting hole (2002), and is movable between a fourth position and a fifth position, wherein the limiting head (13) faces the second connecting hole (3001); in the fourth position, the connecting rod (1) is hidden in the first connecting hole (2001); in the fifth position, the limiting head (13) enters the second connecting hole (3001), and the abutting portion (11) abuts against the first cabinet body (200) facing the second cabinet body (300). The locking piece (3) is mounted in the second mounting hole (3002).

11. An assembly according to claim 10, wherein, The first cabinet body (200) and the second cabinet body (300) are connected by at least two groups of hidden connection assemblies (100) in the vertical direction.

12. An assembly according to claim 11, wherein, Each of the hidden connecting assemblies (100) is installed on the front side of the first cabinet (200) and the second cabinet (300).

13. A method for assembling a spliced cabinet using the hidden connecting assembly according to any one of claims 1 to 9, wherein the spliced cabinet comprises at least two cabinet bodies, each of which is assembled along a transverse direction between two parallel vertical planes and has a side plate and a horizontal plate, and the outer surface of at least one of the side plates of the cabinet bodies constitutes a splicing surface, and at least one of the horizontal plates constitutes a mounting plate, characterized in that, Definitions Any two adjacent cabinet bodies are a first cabinet (200) and a second cabinet (300), and constitute the first object and the second object, respectively; The method comprises the following steps: a first connecting hole (2001) is formed in the first cabinet (200) and extends transversely from the splicing surface to the mounting plate, and a first mounting hole (2002) is formed in the surface of the mounting plate and extends vertically to the first connecting hole (2001); a second connecting hole (3001) is formed in the second cabinet (300) and extends transversely from the splicing surface to the mounting plate, and a second mounting hole (3002) is formed in the surface of the mounting plate and extends vertically to the second connecting hole (3001); the connecting rod (1) is installed in the first connecting hole (2001) and hidden in the first connecting hole (2001); the locking piece (3) is installed in the second mounting hole (3002); each of the cabinet bodies is placed in a predetermined position between the two vertical planes; the connecting rod (1) is driven to move from the first mounting hole (2002) to the position where the limiting head (13) enters the second connecting hole (3001); the locking piece (3) is driven to move and lock the limiting head (13).

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