Freeze dryer lock pin assembly

Abstract

The present invention discloses a freeze dryer lock pin assembly, comprising a connecting rod, a driving member, a toggle member and a lock pin, wherein the driving member is connected to the connecting rod, the toggle member is fixed on the lock pin, the connecting rod is slidably connected to the toggle member, and the sliding connection end of the toggle member can be driven by the connecting rod to rotate around the lock pin. The present invention has the advantages of simple and reliable structure, and avoids the occurrence of stuck and suffocation phenomena.

Description

Technical Field

[0001] The invention relates to food and medicine packaging machinery, in particular to a freeze dryer lock pin assembly. Background Art

[0002] Patent document (CN 202204267U) discloses a freeze dryer rotary door lock mechanism, as shown in the attached Figure 1 As shown, a cylinder is used to drive the connecting rod to move up and down, and the shift fork is set on the mounting part of the connecting rod, so that the connecting rod drives the shift fork to move up and down and rotate around the mounting part, and the shift fork transmits the rotational motion to the lock pin, which rotates the lock pin 90 degrees. Among them, the lock pin must rotate under the shifting of the shift fork and move relatively inside the shift fork, that is, it is subjected to forces in two directions at the same time. When the rotation of the lock pins in the same row is not synchronized, it is easy to get stuck or even suffocate, resulting in unstable operation of the equipment and the door cannot be opened or locked. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a freeze dryer lock pin assembly which has a simple and reliable structure and avoids the phenomenon of jamming and suffocation.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A freeze dryer lock pin assembly comprises a connecting rod, a driving member, a toggle member and a lock pin, wherein the driving member is connected to the connecting rod, the toggle member is fixed on the lock pin, the connecting rod is slidably connected to the toggle member, and the sliding connection end of the toggle member can be driven by the connecting rod to rotate around the lock pin.

[0006] As a further improvement of the above technical solution: a mounting piece is provided on the connecting rod, a sliding bearing is provided on the mounting piece, a sliding groove is provided on the toggle piece, and the sliding bearing is positioned in the sliding groove.

[0007] As a further improvement of the above technical solution: the sliding groove is a long strip-shaped through groove.

[0008] As a further improvement of the above technical solution: the toggle member is provided with a mounting hole and is sleeved on the locking pin through the mounting hole, and the toggle member and the locking pin are locked by a fastener.

[0009] As a further improvement of the above technical solution: the mounting member passes through the connecting rod and the toggle member, and a first limit member and a second limit member are respectively provided at both ends of the mounting member to prevent falling off, and a third limit member is provided between the first limit member and the second limit member to prevent the sliding bearing from falling off.

[0010] As a further improvement of the above technical solution: the third limiting member is a pressure ring.

[0011] As a further improvement of the above technical solution: the first limiting member is a flange integrally connected to the mounting member, and the second limiting member is a cotter pin.

[0012] As a further improvement of the above technical solution: the locking pin and the toggle member are provided in plurality and arranged in one-to-one correspondence, and the connecting rod is provided with a plurality of the mounting members and arranged in one-to-one correspondence with the plurality of the toggle members.

[0013] Compared with the prior art, the advantages of the present invention are: the freeze dryer locking pin assembly disclosed in the present invention fixedly connects the toggle piece and the locking pin, and the connecting rod and the toggle piece are slidably connected, and the sliding connection end of the toggle piece can be driven by the connecting rod to rotate around the locking pin, so that when the connecting rod moves up and down, the toggle piece and the locking pin as a whole can rotate around the axis of the locking pin itself. At the same time, when the locking pin moves, the locking pin drives the toggle piece as a whole to slide relative to the connecting rod. The structure is simple and reliable, and can avoid jamming and suffocation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The utility model is a structural schematic diagram of an existing freeze dryer locking pin assembly.

[0015] Figure 2 It is a structural schematic diagram of the lock pin assembly of the freeze dryer of the present invention.

[0016] Figure 3 yes Figure 2 A partial enlarged view of .

[0017] Figure 4 It is a schematic diagram of the three-dimensional structure of the toggle member in the present invention.

[0018] Figure 5 It is a schematic diagram of the three-dimensional structure of the sliding bearing in the present invention.

[0019] Figure 6 It is a schematic cross-sectional structural diagram of the mounting member in the present invention.

[0020] Figure 7 It is a schematic diagram of the three-dimensional structure of the third limiting member in the present invention.

[0021] The numbers in the figure represent: 1. connecting rod; 11. mounting member; 12. sliding bearing; 13. first limit member; 14. second limit member; 15. third limit member; 2. driving member; 3. toggle member; 31. sliding groove; 32. mounting hole; 33. fastener; 4. locking pin; 5. shift fork; 51. shift groove. DETAILED DESCRIPTION

[0022] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] Figures 2 to 7An embodiment of the freeze dryer lock pin assembly of the present invention is shown. The freeze dryer lock pin assembly of this embodiment includes a connecting rod 1, a driving member 2, a toggle member 3 and a lock pin 4. The driving member 2 is connected to the connecting rod 1, and the toggle member 3 is fixed on the lock pin 4. The connecting rod 1 is slidably connected to the toggle member 3, and the sliding connection end of the toggle member 3 can be driven by the connecting rod 11 to rotate around the lock pin 4. Among them, the driving member 2 can be, for example, a cylinder, etc., which is used to drive the connecting rod 1 to move up and down in this embodiment; when applied to a freeze dryer, a total of four connecting rods 1 are provided and distributed around the door, so that the freeze dryer door can be reliably locked. The four connecting rods 1 can be connected to the driving member 2 respectively, or the four connecting rods 1 can be driven by one driving member 2 in a linkage manner.

[0024] The lock pin assembly of the freeze dryer fixedly connects the toggle member 3 with the lock pin 4, and the connecting rod 1 is slidably connected with the toggle member 3. The sliding connection end of the toggle member 3 can be driven by the connecting rod 11 to rotate around the lock pin 4, so that when the connecting rod 1 moves up and down, the toggle member 3 and the lock pin 4 can rotate around the axis of the lock pin 4 as a whole. At the same time, when the lock pin 4 moves, the lock pin 4 drives the toggle member 3 to slide relative to the connecting rod 1 as a whole. The structure is simple and reliable, and can avoid jamming and suffocation.

[0025] Furthermore, in this embodiment, a mounting member 11 is provided on the connecting rod 1, a sliding bearing 12 is provided on the mounting member 11, a sliding groove 31 is provided on the toggle member 3, and the sliding bearing 12 is positioned in the sliding groove 31. The mounting member 11 is preferably a pin, and during operation, the connecting rod 1 moves up and down to drive the mounting member 11 and the sliding bearing 12 to move up and down, and the sliding bearing 12 slides relatively in the sliding groove 31; when the locking pin 4 drives the toggle member 3 to slide as a whole, the toggle member 3 slides axially along the sliding bearing 12, and all forces are decomposed through the rotation of the sliding bearing 12, so that there will be no jamming or suffocation, and the noise during operation is small.

[0026] As a preferred technical solution, in this embodiment, the sliding groove 31 is a long strip through groove, which has a simple and reliable structure and is easy to install.

[0027] Furthermore, in this embodiment, the toggle member 3 is provided with a mounting hole 32 and is sleeved on the lock pin 4 through the mounting hole 32, and the toggle member 3 and the lock pin 4 are locked by a fastener 33. The mounting hole 32 is preferably a flat hole, which is conducive to limiting the relative rotation between the toggle member 3 and the lock pin 4, and the fastener 33 is used to lock the two to form a whole.

[0028] Furthermore, in the present embodiment, the mounting member 11 passes through the connecting rod 1 and the toggle member 3, and a first limit member 13 and a second limit member 14 are respectively provided at both ends of the mounting member 11 for preventing falling off, and a third limit member 15 is provided between the first limit member 13 and the second limit member 14 for preventing the sliding bearing 12 from falling off, which is beneficial to preventing the mounting member 11 from falling off from the connecting rod 1 and the toggle member 3, and preventing the sliding bearing 12 from falling off from the sliding groove 31, and has a simple structure and high reliability.

[0029] As a preferred technical solution, in this embodiment, the third limiting member 15 is a pressure ring, the first limiting member 13 is a flange integrally connected to the mounting member 11, and the second limiting member 14 is a cotter pin.

[0030] Further, in this embodiment, the locking pins 4 and the toggle members 3 are provided in plurality and arranged one-to-one, and the connecting rod 1 is provided with a plurality of mounting members 11 and arranged one-to-one with the plurality of toggle members 3. By providing a plurality of locking pins 4 and toggle members 3, and correspondingly providing a plurality of mounting members 11 on the connecting rod 1, multi-point locking of the freeze dryer can be achieved.

[0031] Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Any technician familiar with the art can make many possible changes and modifications to the technical solution of the present invention by using the technical content disclosed above without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention should fall within the scope of protection of the technical solution of the present invention.

Claims

1. A freeze dryer lock pin assembly, comprising a connecting rod (1), a driving member (2), a toggle member (3) and a rotatable lock pin (4), wherein the driving member (2) is connected to the connecting rod (1), and is characterized in that: The locking pin (4) and the toggle member (3) are both provided in plurality and arranged in one-to-one correspondence; the toggle member (3) is fixedly connected to the locking pin (4); the connecting rod (1) is slidably connected to the toggle member (3); and the sliding connection end of the toggle member (3) can be driven by the connecting rod (1) to rotate around the axis of the locking pin (4); a mounting member (11) is provided on the connecting rod (1); a sliding bearing (12) is provided on the mounting member (11); a sliding groove (31) is provided on the toggle member (3); and the sliding bearing (12) is positioned in the sliding groove (31).

2. The freeze dryer lock pin assembly according to claim 1, characterized in that: The sliding groove (31) is a long strip through groove.

3. The freeze dryer lock pin assembly according to claim 1, characterized in that: The toggle member (3) is provided with a mounting hole (32) and is sleeved on the lock pin (4) through the mounting hole (32); the toggle member (3) and the lock pin (4) are locked together by a fastener (33).

4. The freeze dryer lock pin assembly according to claim 1, characterized in that: The mounting member (11) passes through the connecting rod (1) and the shifting member (3); a first limiting member (13) and a second limiting member (14) for preventing the sliding bearing (12) from falling off are respectively provided at both ends of the mounting member (11); and a third limiting member (15) for preventing the sliding bearing (12) from falling off is provided between the first limiting member (13) and the second limiting member (14).

5. The freeze dryer lock pin assembly according to claim 4, characterized in that: The third limiting member (15) is a pressure ring.

6. The freeze dryer lock pin assembly according to claim 4, characterized in that: The first limiting member (13) is a flange integrally connected to the mounting member (11), and the second limiting member (14) is a split pin.

7. The freeze dryer lock pin assembly according to any one of claims 1 to 6, characterized in that: The connecting rod (1) is provided with a plurality of mounting members (11) and is arranged in one-to-one correspondence with the plurality of shifting members (3).

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