Sectional material connecting piece

Abstract

The utility model discloses a sectional material connecting piece which comprises a connecting body, and the connecting body comprises a locking protruding block. The profile is provided with a second embedding cavity allowing the locking protruding block to be embedded therein, the locking protruding block is matched with the cavity wall of the second embedding cavity in an attached mode, the locking protruding block is concaved inwards along the end face to form an upper locking plate and a lower locking plate which are opposite to each other, and a locking stud extending in the length direction is arranged between the upper locking plate and the lower locking plate. The locking stud is of an oval cylinder structure, the locking stud is rotationally connected with a locking shaft positioning hole formed in the connecting body through a locking shaft, and the distance between the upper locking plate and the lower locking plate changes along with rotation of the locking stud. According to the structure, the upper locking plate and the lower locking plate generate outward supporting pressure through the upper locking plate and the lower locking plate so that the upper locking plate and the lower locking plate can be tightly attached to the inner wall of the second embedding cavity, and it is ensured that the connecting piece and the profile are firmly connected; the mounting and dismounting processes are simple; and looseness caused by vibration or stress is avoided.

Description

Technical Field

[0001] The utility model relates to a connection structure of profiles, in particular to a profile connector. Background Art

[0002] Traditional profile connectors are usually connected by screws, bolts or other mechanical fixing methods, but these methods often require pre-drilling, are cumbersome to install, and are prone to loosening when subjected to vibration or stress. In order to overcome this problem, the profile connector provided by the present invention achieves a stable connection by rotating an elliptical cylinder. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a profile connector, wherein two sets of relative upper locking plates and lower locking plates are arranged on the connecting body, and a locking stud in the form of an elliptical cylinder is provided between the upper locking plate and the lower locking plate. The locking stud is rotated by fastener transmission to spread the upper locking plate and the lower locking plate to ensure a stable connection with the profile.

[0004] The technical solution of the utility model is: comprising a connecting body, the end surface of the connecting body butting against the profile is provided with a locking mechanism, the locking mechanism comprises a locking protrusion; the profile is provided with a second embedding cavity for the locking protrusion to be embedded, the locking protrusion fits with the cavity wall of the second embedding cavity, and is characterized in that:

[0005] The locking protrusion is recessed inward along the end surface to form an upper locking plate and a lower locking plate relative to each other, and a middle recess located between the upper locking plate and the lower locking plate. A locking stud extending along the length direction of the middle recess is provided in the middle recess. The locking stud is an elliptical cylindrical structure. The locking stud is rotatably connected to a locking shaft positioning hole provided on the connecting body through a locking shaft. The distance between the upper locking plate and the lower locking plate changes with the rotation of the locking stud.

[0006] Its further technical solution is:

[0007] The lock shaft is also provided with a fastener which is transmission-connected to the lock shaft. The fastener has a transmission shaft hole which is transmission-connected to the lock shaft. The fastener is transmission-connected to the lock shaft through the transmission shaft hole.

[0008] Its further technical solution is:

[0009] The lock shaft is provided with gear teeth along its length direction, and a plurality of groups of gear teeth are evenly arranged around the lock shaft in the circumferential direction. The inner wall of the transmission shaft hole is provided with wheel grooves meshing with the gear teeth along its length direction.

[0010] Its further technical solution is:

[0011] The connecting body has an inclined cavity wall of the connecting piece that is connected to the profile, and the inclined cavity wall of the connecting piece is recessed in the direction of the lock shaft to form a fastener installation groove. The lock shaft positioning holes are located on both sides of the fastener installation groove, and the fastener is placed in the fastener installation groove; the lower end face of the connecting piece of the connecting body has a connecting piece end face groove that matches the profile, and the fastener is located at the connecting piece end face groove to form a handle space.

[0012] Its further technical solution is:

[0013] The upper locking plate and the lower locking plate are located at positions close to the connecting body, and opposite end surfaces of the upper locking plate and the lower locking plate are provided with relatively concave connecting grooves.

[0014] Its further technical solution is:

[0015] Concave grooves are provided at intervals along the cross-sectional direction on the end surfaces of the upper locking plate and the lower locking plate that are away from each other.

[0016] Its further technical solution is:

[0017] The free end of the locking stud is provided with a mounting round head, the radius of the mounting round head is larger than the cross-sectional radius of the locking stud, and the free ends of the upper locking plate and the lower locking plate are provided with a clearance groove at the mounting round head, and the mounting round head is placed in the clearance groove.

[0018] Its further technical solution is:

[0019] The locking stud is connected to the mounting round head via a transition arc surface, and the end surfaces of the free ends of the upper locking plate and the lower locking plate are provided with guide arc surfaces for inserting the locking stud, and the transition arc surface matches the guide arc surface.

[0020] Its further technical solution is:

[0021] The profile also has a first embedding cavity, and the locking mechanism includes an upper embedding protrusion matching the first embedding cavity. The upper embedding protrusion extends outward along the end surface where the connecting body and the profile are connected, and there are multiple matching surfaces between the upper embedding protrusion and the cavity wall of the first embedding cavity.

[0022] Its further technical solution is:

[0023] The end surface of the connecting body butting against the profile is provided with a guide surface extending outward, and the guide surface is continuously arranged along the side of the locking mechanism, and there is a profile avoidance position when connecting the profile between the guide surface and the locking mechanism.

[0024] The beneficial technical effects of the utility model are as follows: the distance between the upper locking plate and the lower locking plate is changed by rotating the elliptical cylinder, and in the second embedding cavity of the profile, the upper locking plate and the lower locking plate generate an outward supporting pressure so that the upper locking plate and the lower locking plate are tightly fitted to the inner wall of the second embedding cavity, ensuring that the connecting piece and the profile are firmly connected; the structure has simple installation and disassembly processes; a firm connection is achieved by rotating the locking stud to avoid loosening due to vibration or stress; and it can be applied to various types of profile connections. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structure of the connection between the utility model and the profile;

[0026] Figure 2 It is a schematic diagram of the profile structure connected by the utility model;

[0027] Figure 3 It is a schematic diagram of the structure of the connecting piece body of the utility model;

[0028] Figure 4 It is a schematic diagram of the utility model and the profile explosion structure;

[0029] Figure 5 This is a schematic diagram of the locking protrusion structure of the utility model;

[0030] Figure 6 This is a schematic diagram of the installation of the locking stud of the utility model;

[0031] Figure 7 It is a schematic diagram of another embodiment of the utility model;

[0032] in:

[0033] 010, first cavity wall; 020, inner groove; 021, outer convex cavity; 022, inclined cavity wall; 030, connecting wall; 040, T-shaped flange; 041, bending portion; 050, first embedded cavity; 060, lower end surface; 070, partition plate; 080, second embedded cavity; 090, third embedded cavity;

[0034] 1. Connecting body; 11. Inclined cavity wall of connecting piece; 12. Lower end face of connecting piece; 13. End face groove of connecting piece; 2. Locking mechanism; 21. Upper embedded protrusion; 22. Lower embedded protrusion; 23. Locking protrusion; 231. Upper locking plate; 232. Lower locking plate; 233. Middle depression; 234. Connecting groove; 3. Locking stud; 31. Locking shaft; 32. Gear teeth; 4. Locking shaft positioning hole; 5. Fastener; 51. Transmission shaft hole; 6. Fastener mounting groove; 7. Mounting round head; 8. Clearance groove; 9. Guide surface. DETAILED DESCRIPTION

[0035] In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the specific implementation methods of the utility model are further described in detail below in conjunction with the drawings and embodiments. The following embodiments are used to illustrate the utility model but are not used to limit the scope of the utility model.

[0036] like Figure 1 As shown, the profile connector of the present invention is used to connect two groups of profiles, and includes a connecting body 1. The end surface of the connecting body 1 that is butted against the profile 100 is provided with a locking mechanism 2.

[0037] like Figure 2 The profile in this embodiment is provided with an embedding cavity for accommodating the locking mechanism. Specifically, a first cavity wall 010 and a second cavity wall are provided on both sides of the profile. An inner groove 020 and an outer convex cavity 021 are formed by the inward depression of the second cavity wall. The inner groove 020 and the outer convex cavity 021 are connected by a connecting wall 030. Two groups of T-shaped flanges 040 extending in the direction of the notch of the inner groove 020 are provided on the inner wall of the first cavity wall 010. The two groups of T-shaped flanges 040 are arranged at intervals. The bending parts 041 of the two groups of T-shaped flanges 040 are opposite and spaced a certain distance apart. The two groups of T-shaped flanges 040 extend along the length direction of the profile to form a first embedding cavity 050 connected to the locking mechanism 2 and having an opening. The two cavity walls form an inclined cavity wall 022 on the outer convex cavity 021 which gradually approaches the first cavity wall 010. The first cavity wall 010, the connecting wall 030, the inclined cavity wall 022 and the lower end face 060 together form an outer convex cavity 021 with a cross-section of a right-angled trapezoid. The upper base length of the right-angled trapezoid is greater than the lower base length. A partition plate 070 is provided in the outer convex cavity 021 along the length direction to form a second embedded cavity 080 connected to the locking mechanism 2; the lower end face 060 is concave along the end face to form an end face groove 061. The first cavity wall 010, the partition plate 070, the inclined cavity wall 022 and the inwardly concave lower end face 060 together form a third embedded cavity 090 with a special-shaped structure connected to the locking mechanism 2.

[0038] like Figure 3 As shown, the connecting body 1 has the same shape as the profile, including a connecting member inclined cavity wall 11 connected to the inclined cavity wall 022, and the connecting member lower end surface 12 of the connecting body 1 also has a connecting member end surface groove 13 connected to the end surface groove 061.

[0039] like Figures 4 to 5As shown, the locking mechanism 2 includes an upper embedded protrusion 21 matching the first embedded cavity 050, and also includes a lower embedded protrusion 22 matching the third embedded cavity 090. The upper embedded protrusion 21 and the lower embedded protrusion 22 both extend outward along the end surface where the connecting body 1 is connected to the profile. The upper embedded protrusion 21 and the lower embedded protrusion 22 have multiple mating surfaces with the cavity walls of the first embedded cavity 050 and the third embedded cavity 090, respectively, so that the connecting body 1 is better fixed and connected to the corresponding profile through the upper embedded protrusion 21 and the lower embedded protrusion 22.

[0040] In this embodiment, each surface of the upper embedding protrusion 21 and the lower embedding protrusion 22 is completely fitted with the cavity walls of the first embedding cavity 050 and the third embedding cavity 090. The upper embedding protrusion 21 is a convex structure, the boss of the convex structure is matched with the bent parts 041 of the two groups of T-shaped flanges 040, and the opening of the first embedding cavity forms an escape opening when the upper embedding protrusion 21 is plugged in.

[0041] The locking mechanism 2 also includes a locking unit matching the second embedded cavity 080, and the locking unit includes a locking protrusion 23 matching the second embedded cavity 080, that is, the locking protrusion 23 is a right-angled trapezoidal structure with an upper bottom length greater than a lower bottom length, and the locking protrusion 23 is recessed inward along the middle of the end surface to form a relative upper locking plate 231 and a lower locking plate 232 and a middle recess 233 located between the upper locking plate 231 and the lower locking plate 232, and a locking stud 3 extending along the length direction of the middle recess 233 is provided in the middle recess 233, and the locking stud 3 is an elliptical cylinder, and the distance between the upper locking plate 231 and the lower locking plate 232 is changed by rotating the locking stud 3.

[0042] When the upper locking plate 231 and the lower locking plate 232 are in contact with each other in the shortest axis direction of the locking stud 3, the upper locking plate 231 and the lower locking plate 232 are in an unexpanded state; when the locking stud 3 is rotated until the upper locking plate 231 and the lower locking plate 232 are in the longest axis direction, the distance between the upper locking plate 231 and the lower locking plate 232 is the largest, and the upper locking plate 231 and the lower locking plate 23 will generate outward supporting pressure and fit tightly to the profile, so that the upper locking plate 231 and the lower locking plate 23 can be firmly inserted into the second embedding cavity 080 of the profile, thereby achieving a firm connection with the profile.

[0043] Specifically, the locking stud 3 is rotatably connected to a lock shaft positioning hole 4 provided on the connecting body 1 through a lock shaft 31 , and a fastener 5 drivingly connected to the lock shaft 31 is also provided on the lock shaft 31 .

[0044] Specifically, Figure 6The inclined cavity wall 11 of the connector is recessed toward the lock shaft 31 to form a fastener installation groove 6. The lock shaft positioning holes 4 are located on both sides of the fastener installation groove 6. The fastener 5 has a transmission shaft hole 51 that is transmission-connected to the lock shaft 31. The fastener 5 is transmission-connected to the lock shaft 31 through the transmission shaft hole 51. When the fastener 5 is placed in the fastener installation groove 6, a fastener outer side wall that is located in the same plane as the inclined cavity wall 11 of the connector is formed, and the lower end surface of the fastener 5 is flush with the lower end surface 12 of the connector. The fastener 5 is located at the end surface groove 13 of the connector to form a handle space.

[0045] Furthermore, the lock shaft 31 is provided with gear teeth 32 along its length direction, and multiple groups of the gear teeth 32 are evenly arranged around the lock shaft 31. Correspondingly, the inner wall of the transmission shaft hole 51 is provided with gear grooves meshing with the gear teeth 32 along its length direction. In this embodiment, the lock shaft 31 is a cross-axis structure, and the four groups of gear teeth 32 are respectively located on the elliptical major axis and the elliptical minor axis of the elliptical locking stud 3.

[0046] Furthermore, the transmission shaft hole 51 is arranged close to the upper end surface of the fastener 5, so that the power arm formed by the transmission shaft hole 51 and the lower end surface of the fastener 5 is longer, and the force applied to the fastener 5 can be more labor-saving.

[0047] In this embodiment, when the upper locking plate 231 and the lower locking plate 232 are in an unexpanded state, the fastener 5 is perpendicular to the inclined cavity wall 11 of the connecting member and protrudes out of the inclined cavity wall 11 of the connecting member. When the fastener 5 is subjected to a downward force, under the transmission action of the locking shaft 31, the locking stud 3 rotates between the upper locking plate 231 and the lower locking plate 232 until the locking stud 3 is located on the long axis line and is respectively in contact with the upper locking plate 231 and the lower locking plate 232. At this time, the upper locking plate 231 and the lower locking plate 232 are in an expanded state, and the upper end surface of the upper locking plate 231 and the lower end surface of the lower locking plate 231 are both tightly attached to the corresponding cavity wall of the second embedded cavity 080, so as to complete the locking unit to connect the connecting body 1 and the profile more firmly; at this time, the fastener 5 is placed in the fastener mounting groove 6.

[0048] Furthermore, at the connection point of the connecting body 1, the opposite end surfaces of the upper locking plate 231 and the lower locking plate 232 are provided with relatively concave connecting grooves 234, so that the upper locking plate 231 and the lower locking plate 232 have a larger elastic space when they are stretched apart.

[0049] Furthermore, the end faces of the upper locking plate 231 and the lower locking plate 232 that are separated from each other are provided with concave grooves at intervals along the cross-sectional direction, so that the upper locking plate 231 and the lower locking plate 232 are respectively fitted with the corresponding cavity walls of the second embedded cavity 080 through multiple groups of bosses to increase friction.

[0050] Furthermore, the locking stud 3 has a frustum-shaped structure, and the large end of the frustum is close to the free ends of the upper locking plate 231 and the lower locking plate 232. When the locking stud 3 rotates, the upper locking plate 231 and the lower locking plate 232 are stretched apart only by the free end, which can reduce the force applied to the fastener.

[0051] Furthermore, the large end of the locking stud 3 is provided with a mounting round head 7, the radius of which is larger than the cross-sectional radius of the locking stud 3 to prevent the locking stud 3 from slipping out of the middle recess 233 between the upper locking plate 231 and the lower locking plate 232.

[0052] The locking stud 3 is connected to the mounting round head 7 through a transition arc surface. The free ends of the upper locking plate 231 and the lower locking plate 232 are provided with a clearance groove 8 at the mounting round head 7, and the mounting round head 7 is placed in the clearance groove 8. The end faces of the free ends of the upper locking plate 231 and the lower locking plate 232 are provided with a guide arc surface for inserting the locking stud 3, and the transition arc surface cooperates with the guide arc surface.

[0053] During installation, the fastener 5 is placed in the fastener installation groove 6, and the locking stud 3 is inserted through the free end surfaces of the upper locking plate 231 and the lower locking plate 232, and aligned with the transmission shaft hole 51 through the locking shaft 31. If disassembly is required, the locking stud 3 is rotated in the opposite direction by rotating the fastener 5, the pressure is released, and the profile is removed.

[0054] Furthermore, the end surface of the connecting body 1 where it docks with the profile is provided with a guide surface 9 extending outward, and the guide surface 9 is continuously arranged along the side of the locking mechanism 2. There is a profile avoidance position between the guide surface 9 and the locking mechanism 2 when the profile is connected. When the profile is connected to the connecting piece, the guide surface 9 has a guiding function.

[0055] In this embodiment, when the profile connector is used to connect two groups of profiles located on the same straight line, the two groups of connection bodies 1 are located on the same straight line and are integrally formed, and the two groups of locking mechanisms 2 are symmetrically arranged on both sides of the two groups of connection bodies 1. Figures 1 to 6 In another embodiment, when the profile connector is used to connect two groups of profiles with perpendicular extension directions, the two groups of connecting bodies 1 are perpendicular to each other and integrally formed, and the two groups of locking mechanisms 2 are arranged on both sides of the two groups of connecting bodies 1, such as Figure 7 .

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the technical principle of the present invention, and these improvements and modifications should also be regarded as within the protection scope of the present invention.

Claims

1. A profile connector, comprising a connecting body (1), wherein the end surface of the connecting body (1) that is butted against the profile (100) is provided with a locking mechanism (2), wherein the locking mechanism (2) comprises a locking protrusion (23); the profile is provided with a second embedding cavity (080) for embedding the locking protrusion (23), the locking protrusion (23) and the cavity wall of the second embedding cavity (080) being fitted and matched, and characterized in that: The locking protrusion (23) is recessed inward along the end surface to form an upper locking plate (231) and a lower locking plate (232) opposite to each other, and a middle recess (233) located between the upper locking plate (231) and the lower locking plate (232); a locking stud (3) extending along the length direction of the middle recess (233) is arranged in the middle recess (233); the locking stud (3) is an elliptical cylindrical structure; the locking stud (3) is rotatably connected to a locking shaft positioning hole (4) provided on the connecting body (1) through a locking shaft (31); and the distance between the upper locking plate (231) and the lower locking plate (232) changes with the rotation of the locking stud (3).

2. The profile connector according to claim 1, characterized in that: The lock shaft (31) is also provided with a fastener (5) which is transmission-connected to the lock shaft (31); the fastener (5) has a transmission shaft hole (51) which is transmission-connected to the lock shaft (31); the fastener (5) is transmission-connected to the lock shaft (31) via the transmission shaft hole (51).

3. The profile connector according to claim 2, characterized in that: The lock shaft (31) is provided with gear teeth (32) along its length direction, and a plurality of groups of the gear teeth (32) are evenly arranged around the lock shaft (31) in the circumferential direction. The inner wall of the transmission shaft hole (51) is provided with wheel grooves meshing with the gear teeth (32) along its length direction.

4. The profile connector according to claim 2, characterized in that: The connecting body (1) has a connecting piece inclined cavity wall (11) connected to the profile, the connecting piece inclined cavity wall (11) is recessed in the direction of the lock shaft (31) to form a fastener installation groove (6), the lock shaft positioning hole (4) is located on both sides of the fastener installation groove (6), and the fastener (5) is placed in the fastener installation groove (6); the connecting piece lower end surface (12) of the connecting body (1) has a connecting piece end surface groove (13) matching the profile, and the fastener (5) is located at the connecting piece end surface groove (13) to form a handle space.

5. The profile connector according to claim 1, characterized in that: The upper locking plate (231) and the lower locking plate (232) are located near the connection body (1), and the opposite end surfaces of the upper locking plate (231) and the lower locking plate (232) are provided with relatively concave connection grooves (234).

6. The profile connector according to claim 1, characterized in that: Concave grooves are provided at intervals along the cross-sectional direction on the end surfaces of the upper locking plate (231) and the lower locking plate (232) that are separated from each other.

7. The profile connector according to claim 1, characterized in that: The free end of the locking stud (3) is provided with a mounting round head (7), the radius of the mounting round head (7) is greater than the cross-sectional radius of the locking stud (3), and the free ends of the upper locking plate (231) and the lower locking plate (232) are provided with a clearance groove (8) at the mounting round head (7), and the mounting round head (7) is placed in the clearance groove (8).

8. The profile connector according to claim 7, characterized in that: The locking stud (3) is connected to the mounting round head (7) via a transition arc surface, and the end surfaces of the free ends of the upper locking plate (231) and the lower locking plate (232) are provided with guide arc surfaces for inserting the locking stud (3), and the transition arc surface cooperates with the guide arc surface.

9. The profile connector according to claim 1, characterized in that: The profile also has a first embedding cavity (050), and the locking mechanism (2) includes an upper embedding protrusion (21) matching the first embedding cavity (050), the upper embedding protrusion (21) extending outward along the end surface where the connecting body (1) and the profile are connected, and there are multiple matching surfaces between the upper embedding protrusion (21) and the cavity wall of the first embedding cavity (050).

10. The profile connector according to claim 1, characterized in that: The end surface of the connecting body (1) butting against the profile is provided with a guide surface (9) extending outwards, the guide surface (9) is continuously arranged along the side of the locking mechanism (2), and there is a profile avoidance position between the guide surface (9) and the locking mechanism (2) when the profile is connected.

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