Connecting and locking device

Abstract

The utility model discloses a connecting and locking device, which belongs to the technical field of mechanical locking and comprises a connecting pin and a locking component. Two parts can be connected through the connecting pin, and the connecting pin can be locked through the locking assembly. The locking assembly comprises a base, a rotating shaft connected to the base, a limiting piece rotationally connected to the rotating shaft and an elastic piece wound on the rotating shaft, the two ends of the elastic piece are connected to the base, the elastic piece partially abuts against the limiting piece, and the limiting piece can be driven by the elastic piece to rotate. A limiting groove is formed in the connecting pin, and the limiting piece can be partially embedded into the limiting groove and abuts against the limiting groove so as to lock the connecting pin. According to the connecting and locking device, the limiting piece is connected with the limiting groove in the connecting pin in a matched mode, so that the connecting pin can be rapidly limited and locked. And after the connecting pin is quickly inserted and mounted, automatic locking is achieved, locking is convenient and reliable, and the anti-misoperation device can be widely applied to various occasions needing quick mounting and anti-misoperation and has good practical value and application prospect.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical locking, and in particular relates to a connection locking device. Background Art

[0002] At present, some parts are connected by connecting pins. After the connecting pins are connected, the connecting pins need to be fixed to ensure the stability of the connection. Usually, some locking devices are used to lock the connecting pins.

[0003] However, these locking devices may have problems such as complicated operation, inability to lock automatically and inability to accurately position, and are not suitable for the connection of some folding mechanisms. Utility Model Content

[0004] In view of one or more of the above defects or improvement needs of the prior art, the utility model provides a connection locking device, which can automatically lock after the connection pin is quickly inserted and installed, and the locking is convenient and reliable. It can be widely used in various occasions that require quick installation and prevent misoperation.

[0005] To achieve the above-mentioned purpose, the utility model provides a connection locking device, comprising a connection pin and a locking assembly; the connection pin can connect two parts, and the locking assembly can lock the connection pin;

[0006] The locking assembly includes a base, a rotating shaft connected to the base, a limiting member rotatably connected to the rotating shaft, and an elastic member wound around the rotating shaft; both ends of the elastic member are connected to the base, a portion of the elastic member abuts against the limiting member, and the limiting member can rotate under the drive of the elastic member;

[0007] The connecting pin is provided with a limiting groove, and the limiting member can be partially embedded in the limiting groove and abut against the limiting groove to lock the connecting pin.

[0008] As a further improvement of the present invention, the cross-section of the portion of the limiting member that is embedded in the limiting groove is polygonal, circular or elliptical.

[0009] As a further improvement of the present invention, the limiting member further comprises an operating portion, the operating portion is located at an end of the limiting member away from the base, and the limiting member can be rotated by the operating portion.

[0010] As a further improvement of the present invention, the elastic member adopts an N-type torsion spring.

[0011] As a further improvement of the utility model, split pins are provided at both ends of the rotating shaft.

[0012] As a further improvement of the present invention, the limiting member is provided with a groove corresponding to the elastic member, and the elastic member can be embedded in the groove.

[0013] As a further improvement of the present utility model, the limiting member is provided with a through hole, and the rotating shaft passes through the through hole.

[0014] As a further improvement of the utility model, it also includes a connecting piece, and the base is connected to the part through the connecting piece.

[0015] As a further improvement of the present invention, the connecting pin is arranged in a stepped shape.

[0016] As a further improvement of the present invention, the end surface where the limiting groove abuts against the limiting member is configured as a rounded corner.

[0017] The above-mentioned improved technical features can be combined with each other as long as they do not conflict with each other.

[0018] In general, compared with the prior art, the above technical solutions conceived by the utility model have the following beneficial effects:

[0019] (1) The connection locking device of the utility model is connected with the limit groove on the connection pin through the limit piece, so that the connection pin can be quickly limited and locked. The device as a whole can be automatically locked after the connection pin is quickly inserted and installed. The locking is convenient and reliable, and can be widely used in various occasions that require quick installation and prevent misoperation. It has good practical value and application prospects.

[0020] (2) The connection locking device of the utility model can be manually operated by setting an operating part, which is convenient for unlocking and easy to operate. In addition, the rotating shaft and the fixing seat do not rotate relative to each other, which can ensure the reliable rotation of the limiter and the overall use of the device is good.

[0021] (3) The connection locking device in the utility model uses elastic parts and limit parts to automatically lock with the limit grooves on the connection pins, and the locking is firm and reliable. Automatic locking can be completed after the connection pins are inserted, and manual operation can complete the unlocking and pin withdrawal separation operations, which is easy to operate. It can be widely used in the connection and separation between various functional structural parts that require quick plug-in and pull-out, automatic locking, and precise positioning, and has good practical value and application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 It is a cross-sectional view of the connection between the locking device and the parts in the embodiment of the utility model;

[0024] Figure 2 It is a three-view drawing of the locking assembly connected to the locking device in the embodiment of the utility model;

[0025] Figure 3 It is a schematic diagram of a connecting pin of a connecting locking device in an embodiment of the utility model;

[0026] Figure 4 This is a schematic diagram of the locking state of the connection locking device in the embodiment of the utility model;

[0027] Figure 5 This is a schematic diagram of the unlocked state of the connection locking device in the embodiment of the utility model;

[0028] Figure 6 It is a schematic diagram of a limiter for connecting a locking device in an embodiment of the utility model;

[0029] Figure 7 It is a schematic diagram of an elastic member connecting a locking device in an embodiment of the utility model;

[0030] Figure 8 It is a front view and a side view of the connection between the locking device and the parts in the embodiment of the utility model;

[0031] In all the drawings, the same reference numerals represent the same technical features, specifically:

[0032] 1. First part; 2. Second part; 3. Connecting pin; 4. Locking assembly;

[0033] 301, limit slot;

[0034] 401, base; 402, rotating shaft; 403, limiting member; 404, elastic member; 405, cotter pin; 4031, operating part; 4032, through hole. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model. In addition, the technical features involved in each embodiment of the utility model described below can be combined with each other as long as they do not conflict with each other.

[0036] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0037] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0038] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0040] Example:

[0041] See also Figure 1 to Figure 8 The connection locking device in the preferred embodiment of the utility model comprises a connection pin 3 and a locking assembly 4. Figure 1As shown, a connecting hole is provided between the first part 1 and the second part 2 to be connected, so that the connecting pin 3 can pass through the connecting holes of the two parts at the same time, so that the connecting pin 3 connects the two parts.

[0042] like Figure 1 As shown in FIG. 1 , the connection holes of the parts to be connected are set as stepped pin holes. Therefore, Figure 3 As shown, in the preferred embodiment, the connecting pin 3 is also arranged in a stepped shape, which cooperates with the stepped pin hole with a small gap and can be freely inserted, pulled out and limited from the hole.

[0043] Furthermore, in the preferred embodiment, the locking assembly 4 can lock the connecting pin 3, which is specifically used to lock the connecting pin 3 after the connecting pin 3 connects the two parts. In the preferred embodiment, the locking assembly 4 includes a base 401, a rotating shaft 402 connected to the base 401, a stopper 403 rotatably connected to the rotating shaft 402, and an elastic member 404 wound around the rotating shaft 402. Among them, both ends of the elastic member 404 are connected to the base 401, and the elastic member 404 partially abuts against the stopper 403, and the stopper 403 can rotate under the drive of the elastic member 404.

[0044] It is understandable that when the elastic member 404 abuts against the limiting member 403 , the limiting member 403 can be driven by the elastic member 404 . When the elastic member 404 is compressed and has elastic force, the elastic force drives the elastic member 404 to rotate, thereby driving the limiting member 403 to rotate.

[0045] Among them, Figure 7 As shown, in the preferred embodiment, the elastic member 404 adopts an N-type torsion spring, which is in a compressed state in a free state and has a preload force, providing restoring power to the limiter 403. Optionally, the limiter 403 may be provided with a groove (not shown in the figure) corresponding to the elastic member 404, and the elastic member 404 may be embedded in the groove, so that the elastic member 404 and the limiter 403 are better connected, ensuring that the preload force of the elastic member 404 can be applied to the limiter 403.

[0046] Furthermore, in a preferred embodiment, the stopper 403 is provided with a through hole 4032, and the rotating shaft 402 passes through the through hole 4032, so that the two can be well connected and the stopper 403 can rotate around the rotating shaft 402. In a preferred embodiment, the rotating shaft 402 is fixedly connected to the base 401, and when the elastic member 404 pushes the stopper 403 to rotate, the rotating shaft 402 can be prevented from rotating as well, so that the stopper 403 can rotate reliably. More preferably, split pins 405 are provided at both ends of the rotating shaft 402, which can further ensure that the rotating shaft 402 and the base 401 will not rotate relative to each other.

[0047] Specifically, Figure 3As shown, in the preferred embodiment, a limiting groove 301 is provided on the connecting pin 3, and the limiting member 403 can be partially embedded in the limiting groove 301 and abut against the limiting groove 301 to lock the connecting pin 3. It can be understood that the volume of the limiting member 403 is larger than the limiting groove 301, and it cannot be completely accommodated in the limiting groove 301. Therefore, when the part of the limiting member 403 that is smaller than the limiting groove 301 is accommodated in the limiting groove 301, the other part cannot enter the limiting groove 301, so that the limiting member 403 is stuck, and the locking and limiting of the connecting pin 3 is achieved.

[0048] In detail, in the preferred embodiment, the cross section of the portion where the stopper 403 is embedded in the stopper groove 301 is polygonal, circular or elliptical, that is, the portion where the stopper 403 is embedded in the stopper groove 301 can be square, circular or elliptical, etc. Figure 6 As shown, it is square, the limiting groove 301 is also square, and the side of the limiting member 403 abuts against the end surface of the limiting groove 301, so that the limiting member 403 is difficult to rotate, and the connecting pin 3 is also prevented from moving. Figure 3 As shown, in the preferred embodiment, the end surface where the limiting groove 301 abuts against the limiting member 403 is configured as a rounded corner to facilitate the limiting member 403 to enter or exit the limiting groove 301 .

[0049] More specifically, if Figure 6 As shown, in the preferred embodiment, the position limiting member 403 further includes an operating portion 4031, which is located at one end of the position limiting member 403 away from the base 401, and the position limiting member 403 can be rotated by the operating portion 4031. The setting of the operating portion 4031 enables the position limiting member 403 to rotate after the position limiting member 403 completes the locking of the connecting pin 3, and if the locking of the connecting pin 3 is to be canceled, the operator can turn the operating portion 4031 to release the locking of the connecting pin 3, thereby facilitating the operation.

[0050] In addition, in the preferred embodiment, the connection and locking device further comprises a connecting member, and the base 401 is connected to the part through the connecting member. In specific implementation, the connecting member can be a bolt, and the base 401 and the part are connected by the bolt, so that the locking assembly 4 can be fixedly connected to the part to play a stable locking role.

[0051] When the connection locking device of the utility model is working, the two parts to be connected are inserted and docked. After the docking is completed, the connecting pin 3 is inserted, and the lower surface of the connecting pin 3 abuts against the upper surface of the limiting member 403. At this time, the limiting member 403 is not in a natural state, and the elastic member 404 is compressed, and the connecting pin 3 is continuously pushed until the limiting groove 301 appears at the top of the limiting member 403. The top surface of the limiting member 403 is unconstrained and can be rotated and embedded in the limiting groove 301 under the action of the elastic member 404, and the connecting pin 3 is locked, and the docking and locking of the connecting pin 3 is completed. Figure 4Before pulling out the pin, the limiting member 403 is moved by the operating part 4031 so that the limiting member 403 is withdrawn from the limiting groove 301. Figure 5 Press the connecting pin 3 at the same time to unlock the connecting pin 3 and withdraw it, completing the unlocking of the connecting pin 3.

[0052] The connection locking device in the utility model adopts elastic parts and limit parts to automatically lock with the limit groove on the connection pin, and the locking is firm and reliable. Automatic locking can be completed after the connection pin is inserted, and manual operation can complete the unlocking and pin withdrawal separation operation, which is easy to operate. It can be widely used in the connection and separation between various functional structural parts that require fast plugging and unplugging, automatic locking, and precise positioning, and has good practical value and application prospects.

[0053] It is easy for those skilled in the art to understand that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A connection locking device, characterized in that: It includes a connecting pin and a locking assembly; the connecting pin can connect two parts, and the locking assembly can lock the connecting pin; The locking assembly includes a base, a rotating shaft connected to the base, a limiting member rotatably connected to the rotating shaft, and an elastic member wound around the rotating shaft; both ends of the elastic member are connected to the base, a portion of the elastic member abuts against the limiting member, and the limiting member can rotate under the drive of the elastic member; The connecting pin is provided with a limiting groove, and the limiting member can be partially embedded in the limiting groove and abut against the limiting groove to lock the connecting pin.

2. The connection locking device according to claim 1, characterized in that: The cross section of the portion where the limiting member is embedded in the limiting groove is polygonal, circular or elliptical.

3. The connection locking device according to claim 1, characterized in that: The limiting member further includes an operating portion, which is located at an end of the limiting member away from the base, and the limiting member can be rotated by the operating portion.

4. The connection locking device according to claim 1, characterized in that: The elastic member is an N-type torsion spring.

5. The connection locking device according to claim 1, characterized in that: Split pins are arranged at both ends of the rotating shaft.

6. The connection locking device according to any one of claims 1 to 5, characterized in that: The limiting member is provided with a groove corresponding to the elastic member, and the elastic member can be embedded in the groove.

7. The connection locking device according to any one of claims 1 to 5, characterized in that: The limiting member is provided with a through hole, and the rotating shaft passes through the through hole.

8. The connection locking device according to any one of claims 1 to 5, characterized in that: It also includes a connecting piece, and the base is connected to the part through the connecting piece.

9. The connection locking device according to any one of claims 1 to 5, characterized in that: The connecting pin is arranged in a stepped shape.

10. The connection locking device according to any one of claims 1 to 5, characterized in that: The end surface of the limiting groove abutting against the limiting member is configured as a rounded corner.

Images