Locating pin working position self-locking mechanism

Abstract

The utility model discloses a positioning pin working position self-locking mechanism, which belongs to the technical field of positioning pins and comprises a connecting block, a positioning pin, a driving piece and a spring. A pin hole for the positioning pin to pass through is formed in the connecting block, and the positioning pin is movably arranged in the pin hole; the driving piece is fixedly connected to one side of the near end of the connecting block, and the output end of the driving piece is fixedly connected with the positioning pin; the spring is arranged between the driving piece and the positioning pin and used for providing elastic force enabling the positioning pin to stretch out of one side of the far end of the connecting block. According to the utility model, through the arrangement of the spring, the positioning pin can be prevented from retreating from the connecting block through the elastic force provided by the spring when the driving piece is not subjected to air supply, so that the positioning pin can position equipment all the time, and the risk of separation of the positioning pin is greatly reduced. And the mechanism is relatively simple in structure, small in space, economic in benefit and simple to maintain and replace.

Description

Technical Field

[0001] The utility model relates to the technical field of positioning pins, in particular to a self-locking mechanism for a positioning pin working position. Background Art

[0002] At present, conventional locating pin mechanisms that work in a telescopic manner are mainly used in scenarios with a high level of safety. The driving component used to drive the telescopic movement of the locating pin is usually a cylinder. However, when the cylinder is cut off, the locating pin may retract, for example, when the locating pin is in a vertical arrangement state, or the locating pin mechanism is in a high-frequency vibration working state, or the locating pin mechanism is in a high-weight transportation state, etc.

[0003] It can be seen that the existing positioning pin mechanism has obvious defects when working, which will cause the positioning pin to fail. Summary of the Invention

[0004] In view of the problem in the prior art that the positioning pin retracts upon cutting off the air during operation, the purpose of the present utility model is to provide a self-locking mechanism for the positioning pin in the working position, so as to at least partially solve the above problem.

[0005] In order to achieve the above purpose, the technical solution of the utility model is:

[0006] A self-locking mechanism for a positioning pin working position comprises a connecting block, a positioning pin, a driving member and a spring; the connecting block is provided with a pin hole for the positioning pin to pass through, and the positioning pin is movably arranged in the pin hole; the driving member is fixedly connected to the proximal side of the connecting block, and the output end of the driving member is fixedly connected to the positioning pin; the spring is arranged between the driving member and the positioning pin, and the spring is used to provide an elastic force that causes the positioning pin to extend from the distal side of the connecting block.

[0007] In some preferred embodiments, the driving member is a cylinder, the spring is sleeved outside the cylinder rod of the cylinder, and the two ends of the spring respectively abut against the cylinder body of the cylinder and the positioning pin.

[0008] In some preferred embodiments, a connecting member is further included, and both ends of the connecting member are detachably fixedly connected to the output end of the driving member and the positioning pin respectively.

[0009] In some preferred embodiments, the proximal end of the connecting member is connected to the output end of the driving member via a threaded connection.

[0010] In some preferred embodiments, a clamping head is provided at the distal end of the connector, and a clamping groove adapted to the clamping head is provided on the side wall of the positioning pin.

[0011] In some preferred embodiments, a device block for connecting the positioned device is further included, wherein the device block is arranged on a distal end side of the connection block and a pin hole is also provided on the device block.

[0012] In some preferred embodiments, a bushing adapted to the positioning pin is provided in each of the pin holes.

[0013] The above technical solution provides the following beneficial effects: The present invention utilizes a spring so that when the driving member is deactivated, the spring's elastic force prevents the positioning pin from withdrawing from the connecting block, thereby enabling the positioning pin to consistently position the device, significantly reducing the risk of the positioning pin becoming disengaged. Furthermore, the mechanism is relatively simple in structure, requires minimal space, is economical, and is easy to maintain and replace. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of the present utility model.

[0015] Figure 2 It is an exploded schematic diagram of the present utility model.

[0016] Figure 3 This is a cross-sectional view of the positioning pin of the present invention when it is not working.

[0017] Figure 4 This is a cross-sectional view of the positioning pin in the present invention when it is working.

[0018] In the figure: 1-connecting block, 2-locating pin, 3-driving member, 4-spring, 5-bushing, 6-connecting member, 61-neck ring groove, 62-clamp, 7-equipment block. DETAILED DESCRIPTION

[0019] The following further describes specific embodiments of the present invention in conjunction with the accompanying drawings. It should be noted that the descriptions of these embodiments are intended to aid understanding of the present invention and do not constitute limitations on the present invention. Furthermore, the technical features involved in the various embodiments of the present invention described below may be combined with one another as long as they do not conflict with one another.

[0020] It should be noted that, in the description of the present invention, the terms "up", "down", "left", "right", "front", "back", etc. indicating directions or positional relationships are based on the description of the structure of the present invention shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, it cannot be understood as a limitation on the present invention.

[0021] The "first" and "second" in this technical solution are only used to distinguish the same or similar structures, or corresponding structures with similar functions, and are not an arrangement of the importance of these structures, nor do they have any ranking, size comparison, or other meanings.

[0022] In addition, unless otherwise expressly specified or limited, the terms "installed" and "connected" should be understood broadly. For example, a connection 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, or it can be internal communication between two structures. Those skilled in the art can understand the specific meanings of the above terms in this utility model based on the overall concept of this utility model and the specific context of this solution. Example

[0023] A self-locking mechanism for positioning pin working position, such as Figure 1-4 As shown, it includes a connecting block 1, a positioning pin 2, a driving member 3 and a spring 4.

[0024] During use, the connecting block 1 is fixed to a relatively stable object, such as a machine frame, a base, or the ground, using screws or bolts. A pin hole is defined in the connecting block 1. The diameter of the pin hole is larger than that of the locating pin 2, allowing the locating pin 2 to pass freely through the pin hole. A bushing 5 is also installed in the pin hole. The inner diameter of the bushing 5 is slightly larger than the diameter of the locating pin 2, allowing the locating pin 2 to move axially with the support of the bushing 5.

[0025] The driving member 3 is configured as a cylinder, such as a thin cylinder. The cylinder is fixed to the proximal side of the connecting block 1, and the "proximal" refers to the side where the driving member 3 is located, that is, the right side in the figure.

[0026] The cylinder rod of the cylinder is coaxially arranged with the pin hole on the connecting block 1, so that the cylinder rod can extend into the pin hole of the connecting block 1. At the same time, the cylinder rod of the cylinder is connected to the positioning pin 2. Specifically, a connecting member 6 is arranged between the driving member 3 and the positioning pin 1. The two ends of the connecting member 6 are respectively detachably fixed to the cylinder rod and the positioning pin 2.

[0027] For example, a threaded hole is provided on the distal end face of the cylinder rod, while the proximal end of the connector 6 is correspondingly provided with an external thread, facilitating threaded connection between the proximal end of the connector 6 and the cylinder rod. For example, a necking ring groove 61 is provided on the connector 6, thereby forming a clamping head 62 at the distal end of the connector 6. A stepped hole is correspondingly provided at the proximal end of the locating pin 2. The stepped hole has two sections, one large and one small in diameter, with the small diameter section located on the proximal end. Furthermore, an opening is provided on the side wall of the locating pin 2 for the clamping head 62 to enter and exit the stepped hole. The stepped hole with this opening constitutes a slot for limiting the axial movement of the clamping head 62.

[0028] In this way, when the cylinder is working, the positioning pin 2 can be driven to extend and retract in the connecting block 1 through the connecting piece 6.

[0029] The spring 4 is configured as a helical compression spring, and is used to provide an elastic force to cause the positioning pin 2 to extend from the distal end of the connecting block 1. Specifically, the spring 4 is coaxially sleeved outside the cylinder rod of the cylinder, and the two ends of the spring 4 respectively abut against the cylinder body of the cylinder and the positioning pin 2.

[0030] In addition, the positioning pin working position self-locking mechanism provided by the utility model also includes a device block 7 for connecting the device to be positioned. The device block 7 is arranged on the far end side of the connecting block 1, and a pin hole is also provided on the device block 7. Correspondingly, a bushing 5 that is compatible with the positioning pin 2 is also provided in the pin hole.

[0031] The use process of the positioning pin working position self-locking mechanism provided by the utility model is as follows:

[0032] During use, the device block 7 is fixed to the device being positioned using screws or bolts. The driver 3 is energized, driving the positioning pin 2 to extend from the distal end of the connection block 1 and into the device block 7, thereby positioning the device. When the driver 3 is de-energized, the elastic force provided by the spring 4 prevents the positioning pin 2 from withdrawing from the connection block 1, thereby ensuring that the positioning pin 2 can always position the device.

[0033] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It is apparent to those skilled in the art that various changes, modifications, substitutions, and variations to these embodiments may be made without departing from the principles and spirit of the present invention, and these changes and modifications still fall within the scope of protection of the present invention.

Claims

1. A self-locking mechanism for a positioning pin in a working position, characterized in that: It includes a connecting block, a positioning pin, a driving member and a spring; the connecting block is provided with a pin hole for the positioning pin to pass through, and the positioning pin is movably arranged in the pin hole; the driving member is fixedly connected to the proximal end side of the connecting block, and the output end of the driving member is fixedly connected to the positioning pin; the spring is arranged between the driving member and the positioning pin, and the spring is used to provide an elastic force that causes the positioning pin to extend from the distal end side of the connecting block.

2. The self-locking mechanism according to claim 1, characterized in that: The driving member is a cylinder, the spring is sleeved outside the cylinder rod of the cylinder, and the two ends of the spring respectively abut against the cylinder body of the cylinder and the positioning pin.

3. The self-locking mechanism according to claim 1, characterized in that: It also includes a connecting member, both ends of which are detachably fixedly connected to the output end of the driving member and the positioning pin respectively.

4. The self-locking mechanism according to claim 3, characterized in that: The proximal end of the connecting member is connected to the output end of the driving member through a thread.

5. The self-locking mechanism according to claim 3, characterized in that: A clamping head is provided at the distal end of the connecting piece, and a clamping groove adapted to the clamping head is provided on the side wall of the positioning pin.

6. The self-locking mechanism according to claim 1, characterized in that: It also includes a device block for connecting the positioned device, the device block is arranged on the distal end side of the connection block, and a pin hole is also opened on the device block.

7. The self-locking mechanism according to claim 6, characterized in that: The pin holes are each provided with a bushing matched with the positioning pin.

Images