Safety pin device

Abstract

The utility model discloses a safety pin device, which relates to the technical field of mechanical manufacturing and comprises a pin piece, a safety chain and a fixing piece, the pin piece comprises a main pin section and a movable pin section; one end of the movable pin section is rotationally connected with one end of the main pin section through a connecting piece, and the movable pin section can be switched between an unlocking position and a locking position; when the movable pin section is located at the unlocking position, the movable pin section and the main pin section are coaxially arranged; when the movable pin section is located at the locking position, the two ends of the movable pin section are located outside the main pin section in the radial direction of the main pin section; one end of the safety chain is connected with the other end of the main pin section; the other end of the safety chain is connected with one end of the fixing piece. The safety pin device designed by the utility model is high in assembly and disassembly efficiency and not easy to damage.

Description

Technical Field

[0001] The present application relates to the field of mechanical manufacturing technology, and in particular to a safety pin device. Background Art

[0002] Safety pins are structural connecting parts used to connect and fix machine parts to avoid accidents during the process. For example, they are used in PVD and CVD door panels that are frequently opened and closed, tooling that often needs to be disassembled, slings, maintenance and protection devices, and occasions with vibrating conveyors.

[0003] In order to improve the convenience of use, the connecting pin in the safety pin is usually designed as a quick-release pin. The commonly used quick-release designs on the safety pin are as follows:

[0004] 1. Cylindrical pin design; 2. Split pin design; 3. Pin design with built-in lock nut; However, there are still some problems with the use of the above-mentioned quick-release pins. The cylindrical pin design is difficult to disassemble; the split pin design is easily damaged after repeated disassembly; the pin design with built-in lock nut is prone to loosening of the lock nut and falling off.

[0005] In general, the existing safety pins still have the shortcomings of low disassembly efficiency (not convenient enough) and low reuse rate (easy to damage). Therefore, it is urgent to provide a new design solution to solve the above shortcomings. Utility Model Content

[0006] In view of this, the purpose of the present application is to provide a safety pin device to solve the technical problems of low disassembly efficiency and low reuse rate of existing safety pins.

[0007] In order to achieve the above technical purpose, the present application provides a safety pin device, including a pin, a safety chain and a fixing member;

[0008] The pin member includes a main pin segment and a movable pin segment;

[0009] One end of the movable pin segment is rotatably connected to one end of the main pin segment through a connecting piece, and the movable pin segment can be switched between an unlocking position and a locking position;

[0010] When the movable pin segment is in the unlocked position, it is coaxially arranged with the main pin segment;

[0011] When the movable pin segment is in the locked position, both ends thereof are located outside the main pin segment along the radial direction of the main pin segment;

[0012] One end of the safety chain is connected to the other end of the kingpin segment;

[0013] The other end of the safety chain is connected to one end of the fixing member.

[0014] Furthermore, a first plug-in portion is provided at one end of the kingpin segment;

[0015] One end of the movable pin section is provided with a second plug-in portion which is plug-matched with the first plug-in portion.

[0016] Furthermore, the first plug-in portion is a slot structure, and the second plug-in portion is a protruding structure inserted into the slot structure;

[0017] Or the first plug-in portion is a protruding structure, and the second plug-in portion is a slot structure for the protruding structure to be inserted into.

[0018] Furthermore, the movable pin segment is freely rotatably connected to the main pin segment, so that the movable pin segment can rotate relative to the main pin segment under the force of its own gravity.

[0019] Furthermore, the connecting member is a pin.

[0020] Furthermore, the movable pin segment is rotationally dampedly connected to the main pin segment via a connecting piece.

[0021] Furthermore, the connecting member is a damping shaft.

[0022] Furthermore, a first through hole penetrating through the outer peripheral wall of one end of the kingpin segment is provided;

[0023] A second through hole penetrating through the outer peripheral wall of one end of the movable pin segment is provided;

[0024] The connecting member is fixedly inserted on the first through hole, and the second through hole is used for the connecting member to pass through and is rotatably connected to the connecting member; or, the connecting member is fixedly inserted on the second through hole, and the first through hole is used for the connecting member to be inserted into and is rotatably connected to the connecting member.

[0025] Furthermore, one end of the safety chain is welded and fixed to the kingpin segment, and the other end is detachably connected to the fixing member.

[0026] Further, the fixing member is a screw;

[0027] The threaded rod of the screw moves through a link of the safety chain;

[0028] The screw is sleeved with a gasket in contact with the safety chain.

[0029] It can be seen from the above technical solutions that the safety pin device designed in this application has the following beneficial effects:

[0030] By rotating the movable pin segment to be coaxial with the main pin segment, the pin can be quickly inserted and removed, which improves assembly and disassembly efficiency, is not easily damaged, and has a high reuse rate; after the pin is inserted, it can be self-locked by rotating the movable pin segment to ensure safety. A safety chain is also connected between the fixed part and the pin to further improve safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0032] Figure 1 A three-dimensional diagram of a safety pin device provided in the present application;

[0033] Figure 2 A front view of a safety pin device provided in this application;

[0034] Figure 3 A schematic structural diagram of a kingpin segment of a safety pin device provided in this application;

[0035] Figure 4 A schematic structural diagram of a movable pin segment of a safety pin device provided in the present application;

[0036] Figure 5 A schematic diagram of the structure of a safety pin device provided in this application when it is used in a specific application;

[0037] In the figure: 11, main pin section; 111, first plug-in portion; 112, first through hole; 12, movable pin section; 121, second plug-in portion; 122, second through hole; 13, connecting piece; 14, safety chain; 15, fixing piece; 16, gasket; 21, fixing seat; 22, lifting device; 23, main frame; 24, workpiece; 25, lifting ear. DETAILED DESCRIPTION

[0038] The technical solutions of the embodiments of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, not all of them. All other embodiments obtained by ordinary technicians in this field without creative work based on the embodiments in the embodiments of the present application are within the scope of protection of the embodiments of the present application.

[0039] In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0040] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a replaceable connection, or an integral connection, it can be a mechanical connection, it can be an electrical connection, it can be a direct connection, it can be indirectly connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0041] The embodiment of the present application discloses a safety pin device.

[0042] See also Figure 1 , an embodiment of a safety pin device provided in the embodiments of the present application includes:

[0043] Pin, safety chain 14 and fixing part 15.

[0044] The pin member comprises a main pin section 11 and a movable pin section 12. The pin member is a cylindrical pin structure as a whole and is designed in two sections.

[0045] One end of the movable pin segment 12 is rotatably connected to one end of the main pin segment 11 through a connecting piece 13, and the movable pin segment 12 can be switched between an unlocking position and a locking position.

[0046] When the movable pin segment 12 is in the unlocked position, it is coaxially arranged with the main pin segment 11; when the movable pin segment 12 is in the locked position, both ends of it are located outside the main pin segment 11 along the radial direction of the main pin segment 11; the locked position can be, for example Figure 2 The position shown is perpendicular to the horizontally arranged kingpin segment 11. When in the locked position, both ends of the movable pin segment 12 are outside the kingpin segment 11. Even if the kingpin segment 11 is pulled, it will be blocked by the movable pin segment 12, thereby achieving a good self-locking effect.

[0047] The movable pin segment 12 is designed to be rotatable relative to the main pin segment 11, and can be rotated to a coaxial state with the main pin segment 11 to ensure that the pin can be quickly plugged in and out. This design only requires changing the state of the movable pin segment 12 relative to the main pin segment 11 to switch the pin between the unlocked and locked states, which is not prone to damage, has a high reuse rate, and is safer to use. The design is simple in structure and low in cost.

[0048] One end of the safety chain 14 is connected to the other end of the main pin section 11, and the other end of the safety chain 14 is connected to one end of the fixing member 15. The design of the safety chain 14 can add a safety guarantee to the use of the pin and further improve the safety.

[0049] The above is the first embodiment of a safety pin device provided by the embodiment of the present application. The following is the second embodiment of a safety pin device provided by the embodiment of the present application. For details, please refer to Figures 1 to 5 .

[0050] Based on the solution of the above embodiment 1:

[0051] Furthermore, if Figure 3 as well as Figure 4 As shown, one end of the main pin segment 11 is provided with a first plug-in portion 111, and one end of the movable pin segment 12 is provided with a second plug-in portion 121 which is plugged and matched with the first plug-in portion 111; through the plug-in cooperation between the first plug-in portion 111 and the second plug-in portion 121, the connection and positioning between the main pin segment 11 and the movable pin segment 12 can be quickly completed, thereby improving the installation convenience; and the plug-in cooperation is used to achieve the positioning connection, thereby ensuring that the main pin segment 11 and the movable pin segment 12 in the coaxial state have good integrity, thereby facilitating smoother plug-in and pull-out operations.

[0052] Furthermore, the first plug-in portion 111 is a slot structure, and the second plug-in portion 121 is a protruding structure inserted into the slot structure; the slot structure is an open slot, that is, both sides are also open, so as to avoid interference with the rotation of the movable pin segment 12.

[0053] Of course, the first plug-in portion 111 may be a protruding structure, and the second plug-in portion 121 may be a slot structure for the protruding structure to be inserted into. Those skilled in the art may make appropriate design changes based on this without limitation.

[0054] Furthermore, the movable pin segment 12 and the main pin segment 11 are designed to be freely rotatably connected, so that the movable pin segment 12 can rotate relative to the main pin segment 11 under the action of its own gravity to achieve the function of active self-locking, which can improve the convenience of self-locking.

[0055] Further, taking the free-rotation connection design as an example, the connecting member 13 can be designed as a pin, specifically a cylindrical pin.

[0056] Furthermore, the connecting member 13 can be a threaded rod, which is rotatably installed on the main pin segment 11, and passes through the movable pin segment 12 and is threadedly connected to the movable pin segment 12. The movable pin segment 12 is provided with a first tooth structure (not shown in the figure), and the main pin segment 11 is provided with a second tooth structure (not shown in the figure) that can engage with the first tooth structure; when in use, the movable pin segment 12 and the connecting member 13 are first rotated together to a locked state (for example, a state in which the movable pin segment 12 is perpendicular to the main pin segment 11) / coaxial state (a state in which the movable pin segment 12 is coaxial with the main pin segment 11), and then the movable pin segment 12 is grasped and the connecting member 13 is rotated at the same time, so that the movable pin segment 12 is translated on the connecting member 13 until the first tooth structure on the movable pin segment 12 is engaged with the second tooth structure on the main pin segment 11, so that the locking of the movable pin segment 12 is completed, and the movable pin segment 12 is prevented from rotating due to unexpected external force, thereby improving the safety of use.

[0057] Furthermore, the movable pin segment 12 is connected to the main pin segment 11 by a connecting piece 13. This design allows the movable pin segment 12 to be suspended at any rotation position, so that when plugging and unplugging operations are required, after the movable pin segment 12 is rotated to a coaxial state with the main pin segment 11, the co-installed state can be maintained, and the movable pin segment 12 will not rotate to affect the plugging and unplugging operations, and there is no need to hold the movable pin segment 12 by hand to keep it in a coaxial state.

[0058] Further, taking the rotation damping connection design as an example, the connecting member 13 is a damping shaft.

[0059] Furthermore, if Figure 3 as well as Figure 4 As shown, in order to facilitate the installation and arrangement of the connecting member 13, a first through hole 112 is provided on the outer peripheral wall at one end of the main pin section 11, and a second through hole 122 is provided on the outer peripheral wall at one end of the movable pin section 12.

[0060] The connecting member 13 is fixedly inserted in the first through hole 112, and the second through hole 122 is for the connecting member 13 to pass through and is rotatably connected to the connecting member 13; or, the connecting member 13 is fixedly inserted in the second through hole 122, and the first through hole 112 is for the connecting member 13 to be inserted and is rotatably connected to the connecting member 13.

[0061] Furthermore, one end of the safety chain 14 is welded and fixed to the kingpin segment 11 , and the other end is detachably connected to the fixing member 15 .

[0062] Furthermore, if Figure 1 as well as Figure 2 As shown, the fixing member 15 can be a screw, the threaded rod of the screw movably passes through a ring buckle of the safety chain 14, and then is connected to the corresponding carrier structure to fix the safety chain 14 on the corresponding carrier structure.

[0063] A gasket 16 in contact with the safety chain 14 is sleeved on the screw to reduce the contact wear between the screw head and the safety chain 14 and increase the service life.

[0064] The safety pin device designed in this application can be used as follows:

[0065] like Figure 5 As shown, there is a main frame 23, which is composed of an upper beam and side beams perpendicular to the upper beam. A lifting device 22 is fixed to the bottom of the upper beam of the main frame 23, and a workpiece 24 is connected to the movable end of the lifting device 22; a fixing seat 21 is also fixed to the bottom of the upper beam of the main frame 23, and a lifting ear 25 that can be inserted into the fixing seat 21 is provided on the workpiece 24, and both the fixing seat 21 and the lifting ear 25 are provided with through holes that can be relatively aligned.

[0066] The other end of the safety chain 14 is fixed to the side beam of the main frame 23 by the fixing member 15. When the lifting device 22 moves the movable member to align with the through hole of the fixing seat 21 and the lifting ear 25, the main pin segment 11 and the movable pin segment 12 are coaxial and pass through the fixing seat 21 and the lifting ear 25. Then, the movable pin segment 12 is in the shape of a pin under the action of gravity. Figure 2 In the vertical state shown, since both ends of the movable pin segment 12 are located radially outside the main pin segment 11, a self-locking function is realized to lock the workpiece 24. When the workpiece 24 needs to be driven downward, the movable pin segment 12 is manually rotated to an unlocked state coaxial with the main pin segment 11, and then the pin is pulled out to unlock the workpiece 24, and the workpiece 24 can be driven downward.

[0067] The above is a detailed introduction to a safety pin device provided by the present application. For a person skilled in the art, according to the idea of ​​the embodiments of the present application, there may be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A safety pin device, characterized in that: It includes a pin, a safety chain (14) and a fixing member (15); The pin comprises a main pin segment (11) and a movable pin segment (12); One end of the movable pin segment (12) is rotatably connected to one end of the main pin segment (11) via a connecting piece (13), and the movable pin segment (12) can be switched between an unlocking position and a locking position; When the movable pin segment (12) is in the unlocked position, it is coaxially arranged with the main pin segment (11); When the movable pin segment (12) is in a locked position, both ends thereof are located outside the main pin segment (11) along the radial direction of the main pin segment (11); One end of the safety chain (14) is connected to the other end of the kingpin segment (11); The other end of the safety chain (14) is connected to one end of the fixing member (15).

2. A safety pin device according to claim 1, characterized in that: A first plug-in portion (111) is provided at one end of the kingpin segment (11); One end of the movable pin section (12) is provided with a second plug-in portion (121) pluggably matched with the first plug-in portion (111).

3. A safety pin device according to claim 2, characterized in that: The first plug-in portion (111) is a slot structure, and the second plug-in portion (121) is a protruding structure inserted into the slot structure; Or the first plug-in portion (111) is a protruding structure, and the second plug-in portion (121) is a slot structure for the protruding structure to be inserted into.

4. A safety pin device according to claim 1, characterized in that: The movable pin segment (12) is freely rotatably connected to the main pin segment (11), so that the movable pin segment (12) can rotate relative to the main pin segment (11) under the force of its own weight.

5. A safety pin device according to claim 4, characterized in that: The connecting member (13) is a pin.

6. A safety pin device according to claim 1, characterized in that: The movable pin segment (12) is rotationally dampedly connected to the main pin segment (11) via a connecting piece (13).

7. A safety pin device according to claim 6, characterized in that: The connecting member (13) is a damping shaft.

8. A safety pin device according to claim 1, characterized in that: A first through hole (112) penetrating the main pin segment (11) is provided on an outer peripheral wall at one end of the main pin segment (11); A second through hole (122) penetrating the movable pin segment (12) is provided on an outer peripheral wall at one end of the movable pin segment (12); The connecting member (13) is fixedly inserted in the first through hole (112), and the second through hole (122) allows the connecting member (13) to pass through and is rotatably connected to the connecting member (13); or, the connecting member (13) is fixedly inserted in the second through hole (122), and the first through hole (112) allows the connecting member (13) to be inserted and is rotatably connected to the connecting member (13).

9. A safety pin device according to claim 1, characterized in that: One end of the safety chain (14) is welded and fixed to the kingpin segment (11), and the other end is detachably connected to the fixing member (15).

10. A safety pin device according to claim 9, characterized in that: The fixing member (15) is a screw; The threaded rod of the screw movably passes through a ring of the safety chain (14); A gasket (16) in contact with the safety chain (14) is sleeved on the screw.

Images