Shifting fork type positioning mechanism with locking structure

Abstract

The shifting fork type positioning mechanism with the locking structure comprises a hand wheel and a positioning plate, a center pin is fixedly installed on the inner side of the hand wheel, a movable block is movably connected to the outer side of the center pin, and a shifting piece is fixedly connected to the outer side of the movable block; and the outer side of the movable block is fixedly connected with a locking pin. According to the shifting fork type positioning mechanism with the locking structure, by rotating the handle, when the handle reaches the highest position of the hand wheel, the shifting piece is shifted, under the cooperation of the movable block and the center pin, the movable block drives the locking pin to rotate around the center pin, so that the locking pin is located in a positioning groove in the positioning plate, and when the locking pin is located in the positioning groove, the shifting piece is shifted; the elastic column on the inner side of the fixed block and the locking groove in the movable block are in butt joint and locked, the handle is rotated, and under the cooperation of the ball and the rotating groove, the threaded column in threaded connection drives the abutting base to make contact with the movable block and abut against the movable block, so that positioning locking is completed, and the blade is locked conveniently and stably.

Description

Technical Field

[0001] The utility model relates to the technical field of slicers, in particular to a fork-type positioning mechanism with a locking structure. Background Art

[0002] A microtome is a machine for cutting thin and uniform tissue slices. The tissue is supported by hard paraffin or other substances. Each time a cut is made, the slicer is automatically pushed forward (towards the direction of the knife) the required distance. The gradient of the thickness gauge is usually 1 micron. When cutting paraffin-embedded tissue, multiple slices are made into strips due to adhesion to the wax edge of the previous slice.

[0003] The slicer locking mechanism refers to a mechanism used to lock the slicer blade to ensure that the blade does not accidentally operate or move when the slicer is not in use, thereby ensuring the safety of the user. However, the existing locking structure cannot achieve positioning locking when in use, and the locking process is relatively cumbersome. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a fork-type positioning mechanism with a locking structure, which has the advantages of convenient positioning and locking, and solves the problem that the existing locking structure cannot achieve positioning and locking during use and the locking process is relatively cumbersome.

[0005] To achieve the above object, the utility model provides the following technical solution: a fork-type positioning mechanism with a locking structure, comprising a hand wheel and a positioning plate, a center pin is fixedly installed on the inner side of the hand wheel, a movable block is movably connected to the outer side of the center pin, and a paddle is fixedly connected to the outer side of the movable block;

[0006] The outer side of the movable block is fixedly connected with a locking pin, the inner side of the hand wheel is fixedly connected with a fixed block, the inner side of the fixed block is installed with an elastic column, and the outer side of the hand wheel is installed with a handle.

[0007] Furthermore, a mounting groove is provided on the surface of the hand wheel, and the mounting groove is convex; a through hole is provided on the surface of the hand wheel, and the through hole is located at the center of the hand wheel.

[0008] Furthermore, a rotation groove is formed at one end of the hand wheel away from the mounting groove, and a through hole is formed on the inner side wall of the mounting groove, wherein the diameter of the through hole is smaller than the diameter of the rotation groove.

[0009] Furthermore, a positioning groove is provided on the surface of the positioning plate, and the positioning groove is located in the middle of the positioning plate.

[0010] Furthermore, the center pin and the movable block are both located on the inner side of the installation groove, and locking grooves are provided on both sides of the movable block.

[0011] Furthermore, a thread groove is formed at one end of the handle close to the hand wheel, a thread column is threadedly connected to the inner side of the thread groove, and an end of the thread column away from the thread groove is fixedly connected to an abutment seat.

[0012] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0013] The fork-type positioning mechanism with a locking structure rotates the handle to reach the highest position of the hand wheel, and then the paddle is toggled. The movable block drives the locking pin to rotate around the center pin through the cooperation of the movable block and the center pin, so that the locking pin is located in the positioning groove on the positioning plate. When the locking pin is located in the positioning groove, the elastic column on the inner side of the fixed block and the locking groove on the movable block are docked and locked. The handle is rotated, and under the cooperation of the ball and the rotating groove, the threaded column connected by the thread drives the interference seat to contact the movable block, and the movable block is interfered with, thereby completing the positioning locking, making the blade locking convenient and stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional schematic diagram of the structure of the utility model;

[0015] Figure 2 It is a side cross-sectional schematic diagram of the structure of the utility model;

[0016] Figure 3 The utility model is a front view cross-sectional schematic diagram.

[0017] In the figure: 1, hand wheel; 101, mounting groove; 102, through hole; 103, rotating groove; 2, positioning plate; 201, positioning groove; 3, center pin; 4, movable block; 401, locking groove; 5, paddle; 6, locking pin; 7, fixing block; 8, elastic column; 9, handle; 901, threaded groove; 902, threaded column; 903, abutment seat; 904, ball bearing. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-3In this embodiment, a fork-type positioning mechanism with a locking structure includes a handwheel 1 and a positioning plate 2. A mounting groove 101 is provided on the surface of the handwheel 1, and the mounting groove 101 is "convex". A through hole 102 is provided on the surface of the handwheel 1, and the through hole 102 is located at the center of the handwheel 1. A rotating groove 103 is provided at one end of the handwheel 1 away from the mounting groove 101, and the rotating groove 103 is annular. A through hole is provided on the inner side wall of the mounting groove 101, and the diameter of the through hole is smaller than the diameter of the rotating groove 103. The rotating groove 103 is located on the outside of the through hole. A positioning groove 201 is provided on the surface of the positioning plate 2, and the positioning groove 201 is located in the middle of the positioning plate 2.

[0020] A center pin 3 is fixedly installed on the inner side of the hand wheel 1, and a movable block 4 is movably connected to the outer side of the center pin 3. The center pin 3 and the movable block 4 are both located on the inner side of the installation groove 101. Locking grooves 401 are provided on both sides of the movable block 4. A paddle 5 is fixedly connected to the outer side of the movable block 4, and one end of the paddle 5 away from the movable block 4 extends to the outer side of the installation groove 101.

[0021] The outer side of the movable block 4 is fixedly connected with a locking pin 6, and the specification of the locking pin 6 matches the specification of the positioning groove 201. The inner side of the hand wheel 1 is fixedly connected with a fixing block 7. The number of the fixing blocks 7 is two, and they are symmetrically distributed. The two fixing blocks 7 are distributed on both sides of the movable block 4. The inner side of the fixing block 7 is installed with an elastic column 8, and the specification of the elastic column 8 matches the specification of the locking groove 401.

[0022] A handle 9 is installed on the outer side of the handwheel 1, and a threaded groove 901 is opened at one end of the handle 9 close to the handwheel 1, and a threaded column 902 is threadedly connected to the inner side of the threaded groove 901, and an end of the threaded column 902 away from the threaded groove 901 is fixedly connected to an interference seat 903, and the interference seat 903 is located on the inner side of the installation groove 101. The outer side of the interference seat 903 is fixedly connected with an auxiliary rod that penetrates and extends to the outside of the installation groove 101. The setting of the auxiliary rod allows its threaded column 902 to drive the interference seat 903 to move in a directional manner, and the handle 9 is movably connected to the rotating groove 103 through the ball 904.

[0023] In this embodiment, the blade can be conveniently positioned and locked by the cooperation between the positioning plate 2 and the handle 9.

[0024] The working principle of the above embodiment is:

[0025] By rotating the handle 9 to make it reach the highest position of the handwheel 1, the paddle 5 is toggled, and the movable block 4 drives the locking pin 6 to rotate around the center pin 3 through the cooperation of the movable block 4 and the center pin 3, so that the locking pin 6 is located in the positioning groove 201 on the positioning plate 2. When the locking pin 6 is located in the positioning groove 201, the elastic column 8 on the inner side of the fixed block 7 is docked and locked with the locking groove 401 on the movable block 4. The handle 9 is rotated, and with the cooperation of the ball 904 and the rotating groove 103, the threaded column 902 connected by the thread drives the abutment seat 903 to contact the movable block 4, and abuts against the movable block 4, thereby completing the positioning locking, making the blade locking convenient and stable.

[0026] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fork-type positioning mechanism with a locking structure, comprising a hand wheel (1) and a positioning plate (2), characterized in that: A center pin (3) is fixedly mounted on the inner side of the hand wheel (1), a movable block (4) is movably connected to the outer side of the center pin (3), and a paddle (5) is fixedly connected to the outer side of the movable block (4); A locking pin (6) is fixedly connected to the outer side of the movable block (4), a fixed block (7) is fixedly connected to the inner side of the hand wheel (1), an elastic column (8) is installed on the inner side of the fixed block (7), and a handle (9) is installed on the outer side of the hand wheel (1).

2. The fork-type positioning mechanism with a locking structure according to claim 1, characterized in that: The surface of the hand wheel (1) is provided with a mounting groove (101), the mounting groove (101) is convex, and the surface of the hand wheel (1) is provided with a through hole (102), the through hole (102) is located at the center of the hand wheel (1).

3. The fork-type positioning mechanism with a locking structure according to claim 2, characterized in that: A rotation groove (103) is formed at one end of the hand wheel (1) away from the installation groove (101), and a through hole is formed on the inner side wall of the installation groove (101), wherein the diameter of the through hole is smaller than the diameter of the rotation groove (103).

4. The fork-type positioning mechanism with a locking structure according to claim 1, characterized in that: A positioning groove (201) is provided on the surface of the positioning plate (2), and the positioning groove (201) is located in the middle of the positioning plate (2).

5. The fork-type positioning mechanism with a locking structure according to claim 2, characterized in that: The center pin (3) and the movable block (4) are both located inside the installation groove (101), and locking grooves (401) are provided on both sides of the movable block (4).

6. The fork type positioning mechanism with a locking structure according to claim 1, characterized in that: The handle (9) is provided with a thread groove (901) at one end close to the hand wheel (1), a thread column (902) is threadedly connected to the inner side of the thread groove (901), and an end of the thread column (902) away from the thread groove (901) is fixedly connected to an abutment seat (903).

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