Clamping jaw mechanism

Abstract

The clamping jaw mechanism comprises a base, a first clamping jaw, a second clamping jaw, a driving piece and a shifting piece, the first clamping jaw and the second clamping jaw are both connected with the base in a sliding mode, the first clamping jaw and the second clamping jaw are symmetrically arranged on the two sides of the base, and the shifting piece is arranged on the base. The driving part is arranged on the base, the stirring part is connected to the output end of the driving part and arranged between the first clamping jaw and the second clamping jaw, and the driving part can drive the stirring part to rotate and make the stirring part abut against the first clamping jaw and the second clamping jaw respectively. And the first clamping jaw and the second clamping jaw are separated from each other or folded. The clamping jaw mechanism is simple in structure and stable and reliable in working process, and the first clamping jaw and the second clamping jaw can be separated by a large distance by arranging the stirring piece to rotate by a large angle, so that redundancy is reserved, and the requirement for the position precision of the clamping jaw mechanism and a test tube is lowered.

Description

Technical Field

[0001] The utility model relates to the technical field of in vitro diagnostic equipment, in particular to a clamping claw mechanism. Background Art

[0002] In vitro diagnostic equipment usually needs to draw samples from vacuum blood collection tubes, which often need to be opened manually before being tested on the machine. However, this will undoubtedly reduce the work efficiency of testers. Therefore, many instruments now support the function of directly testing the original sample tubes on the machine, which can effectively reduce the workload of testers and improve user experience. For samples with test tube caps on the machine for testing, there are usually two ways to take samples, namely puncture sampling and sampling after the test tube cap is opened. Test tube open-cap sampling means that the test tube cap of the tube to be tested is automatically opened by the open-cap mechanism, and the test tube cap is buckled after the sampling is completed. When the test tube cap is opened, it is usually necessary to use a clamping mechanism to clamp and fix the test tube to be opened, and then the uncapping mechanism performs the uncapping action. After the sampling is completed, the test tube cap is buckled onto the test tube, thereby completing the uncapping sampling process of a sample.

[0003] According to different opening principles, the clamping mechanism for opening the test tube is also different. However, the clamping mechanism of most of the current opening mechanisms is relatively complex, and has high requirements on the positioning accuracy of the test tube and the positioning accuracy of the clamping jaw. There is no redundancy when there is a deviation in the position of the test tube to be opened, and there is a risk of opening failure. Therefore, it is necessary to propose a new type of opening clamping mechanism. Utility Model Content

[0004] The embodiment of the utility model provides a clamping mechanism for solving the problems in the prior art that the clamping mechanism is relatively complex and has high requirements on the positioning accuracy of the test tube and the positioning accuracy of the clamping jaws, and has no redundancy when there is a deviation in the position of the test tube to be opened, resulting in the risk of opening failure.

[0005] In an embodiment of the utility model, the clamping mechanism includes: a base, a first clamping jaw, a second clamping jaw, a driving member and a toggle member, the first clamping jaw and the second clamping jaw are both slidably connected to the base, and the first clamping jaw and the second clamping jaw are symmetrically arranged on both sides of the base, the driving member is arranged on the base, the toggle member is connected to the output end of the driving member, and the toggle member is arranged between the first clamping jaw and the second clamping jaw, the driving member can drive the toggle member to rotate, and make the toggle member abut against the first clamping jaw and the second clamping jaw respectively, so that the first clamping jaw and the second clamping jaw are separated from or closed with each other.

[0006] As a further optional scheme of the clamping jaw mechanism, the toggle member includes a toggle portion, a first limiting portion and a second limiting portion, the output end of the driving member is connected to the center of the toggle portion, and the side wall of the toggle portion is used to abut against the first clamping jaw and the second clamping jaw.

[0007] As a further optional scheme of the clamping mechanism, the clamping mechanism also includes a reset member, which is made of elastic material. The reset member includes a first reset member and a second reset member, one end of the first reset member is connected to the base, the other end of the first reset member is connected to the first clamping jaw, one end of the second reset member is connected to the base, the other end of the second reset member is connected to the second clamping jaw, and both the first reset member and the second reset member can be stretched when the first clamping jaw and the second clamping jaw move away from each other.

[0008] As a further optional solution of the clamping jaw mechanism, the first reset member and the second reset member are both configured as springs.

[0009] As a further optional solution of the clamping mechanism, the clamping mechanism further includes a sensor component, wherein the sensor component is disposed on the base and is electrically connected to the driving member.

[0010] As a further optional scheme of the clamping jaw mechanism, the sensing assembly includes a through-beam sensor and a baffle, the through-beam sensor is connected to the base, the baffle is connected to the toggle member, and when the first clamping jaw and the second clamping jaw are closed, the baffle is located in the sensing slot of the through-beam sensor.

[0011] As a further optional solution of the clamping mechanism, the clamping mechanism further includes a bearing, and the bearing is provided in two, wherein one bearing is rotationally connected to the first clamping jaw, and the other bearing is rotationally connected to the second clamping jaw.

[0012] As a further optional scheme of the clamping mechanism, the clamping mechanism also includes a limit assembly, which is connected to the base and is arranged on the movement path of the first clamping jaw and the second clamping jaw to limit the movement range of the first clamping jaw and the second clamping jaw.

[0013] As a further optional solution of the clamping jaw mechanism, two slide rails are arranged on the base, and the first clamping jaw and the second clamping jaw are both connected with a slider, and the slider is slidably connected to the slide rails.

[0014] As a further optional scheme of the clamping mechanism, the base includes a mounting block and a motor seat, the mounting block is connected to the motor seat, a accommodating space is formed between the mounting block and the motor seat, the driving member is installed on the top surface of the motor seat, the output end of the driving member passes through the motor seat to the accommodating space, the toggle member is arranged in the accommodating space, and the mounting block is slidably connected to the first clamping jaw and the second clamping jaw respectively.

[0015] Implementing the embodiments of the present utility model will have the following beneficial effects:

[0016] The clamping jaw mechanism adopts a driving member and a toggle member to drive the first clamping jaw and the second clamping jaw to move closer to and away from each other. The structure is simple and the working process is stable and reliable. The distance between the first clamping jaw and the second clamping jaw is related to the rotation angle of the toggle member. By setting the toggle member to rotate at a larger angle, the first clamping jaw and the second clamping jaw can be separated by a larger distance, thereby leaving redundancy to reduce the requirements for the position accuracy of the clamping jaw mechanism and the test tube, thereby improving the success rate of opening the cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model 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 utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] in:

[0019] Figure 1 This is a schematic diagram of the overall structure of the clamping mechanism in one embodiment of the utility model;

[0020] Figure 2 It is a schematic diagram of the structure of the clamping mechanism in one embodiment of the utility model when the first clamping jaw and the second clamping jaw are closed;

[0021] Figure 3 It is a schematic diagram of the structure of the clamping mechanism in one embodiment of the utility model when the first clamping jaw and the second clamping jaw are opened;

[0022] Figure 4 This is a structural schematic diagram of a toggle member in one embodiment of the utility model;

[0023] Description of main component symbols:

[0024] 10-base; 11-mounting block; 111-slide rail; 12-motor seat; 20-first clamp; 30-second clamp; 40-driving member; 50-moving member; 51-moving part; 52-first limiting part; 53-second limiting part; 60-resetting member; 70-sensing component; 71-through-beam sensor; 72-blocking piece; 80-bearing; 90-limiting component; 91-limiting pin; 100-slider. DETAILED DESCRIPTION

[0025] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively with reference to the relevant drawings. The drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many other different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0026] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0028] The embodiment of the utility model provides a clamping mechanism for solving the problems in the prior art that the clamping mechanism is relatively complex and has high requirements on the positioning accuracy of the test tube and the positioning accuracy of the clamping jaws, and has no redundancy when there is a deviation in the position of the test tube to be opened, resulting in the risk of opening failure.

[0029] In the embodiments of the present invention, please refer to Figure 1The clamping mechanism includes: a base 10, a first clamping jaw 20, a second clamping jaw 30, a driving member 40 and a toggle member 50. The first clamping jaw 20 and the second clamping jaw 30 are both slidably connected to the base 10, and the first clamping jaw 20 and the second clamping jaw 30 are symmetrically arranged on both sides of the base 10. The driving member 40 is arranged on the base 10. The toggle member 50 is connected to the output end of the driving member 40, and the toggle member 50 is arranged between the first clamping jaw 20 and the second clamping jaw 30. The driving member 40 can drive the toggle member 50 to rotate, and make the toggle member 50 abut against the first clamping jaw 20 and the second clamping jaw 30 respectively, so that the first clamping jaw 20 and the second clamping jaw 30 are separated or closed from each other.

[0030] The working process of the clamp mechanism is as follows, please refer to Figure 2 and Figure 3 The driving member 40 drives the toggle member 50 to rotate forward, and the toggle member 50 abuts against the first jaw 20 and the second jaw 30, thereby pushing the first jaw 20 and the second jaw 30 to separate from each other, and then the external mechanism drives the test tube cover to move between the first jaw 20 and the second jaw 30, or the external mechanism drives the clamping mechanism to move so that the test tube cover is located between the first jaw 20 and the second jaw 30, and then the driving member 40 drives the toggle member 50 to reverse, and the toggle member 50 drives the first jaw 20 and the second jaw 30 to close together, thereby clamping the test tube cover.

[0031] The clamping mechanism adopts a driving member 40 and a toggle member 50 to drive the first clamping jaw 20 and the second clamping jaw 30 to move closer to and away from each other. The structure is simple and the working process is stable and reliable. The distance between the first clamping jaw 20 and the second clamping jaw 30 is related to the rotation angle of the toggle member 50. By setting the toggle member 50 to rotate at a larger angle, the first clamping jaw 20 and the second clamping jaw 30 can be separated by a larger distance, thereby leaving redundancy to reduce the requirements for the position accuracy of the clamping mechanism and the test tube, thereby improving the success rate of opening the cover.

[0032] In one embodiment, the toggle member 50 includes a toggle portion 51 , a first limiting portion 52 and a second limiting portion 53 . The output end of the driving member 40 is connected to the center of the toggle portion 51 , and the side wall of the toggle portion 51 is used to abut against the first clamp 20 and the second clamp 30 .

[0033] When the driving member 40 is reversed, the provision of the first limiting portion 52 and the second limiting portion 53 can reduce the possibility of the shifting member 50 being out of contact with the first clamping jaw 20 and the second clamping jaw 30, thereby improving the stability of the operation of the clamping mechanism.

[0034] In a specific embodiment, the toggle portion 51 extends in a straight line, the first limit portion 52 is vertically connected to one end of the toggle portion 51 and extends to the side where the first clamping jaw 20 is located; the second limit portion 53 is vertically connected to the other end of the toggle portion 51 and extends to the side where the second clamping jaw 30 is located. In this way, the wave member 50 has a simple structure, is easy to manufacture, and is conducive to saving production costs.

[0035] In one embodiment, the clamping mechanism also includes a reset member 60, which is made of elastic material. The reset member 60 includes a first reset member and a second reset member, one end of the first reset member is connected to the base 10, and the other end of the first reset member is connected to the first clamping jaw 20, one end of the second reset member is connected to the base 10, and the other end of the second reset member is connected to the second clamping jaw 30, and both the first reset member and the second reset member can be stretched when the first clamping jaw 20 and the second clamping jaw 30 are away from each other.

[0036] By setting the reset member 60, it can provide a smoothly changing pulling force when the first jaw 20 and the second jaw 30 approach each other, so that the movement process of the first jaw 20 and the second jaw 30 is smoother. At the same time, the first reset member and the second reset member can tighten the first jaw 20 and the second jaw 30, so that the first jaw 20 and the second jaw 30 can stably clamp the test tube cover.

[0037] In a specific embodiment, the first restoring member and the second restoring member are both configured as springs.

[0038] In one embodiment, the clamp mechanism further includes a sensor assembly 70, which is disposed on the base 10 and is electrically connected to the driving member 40 to control the working process of the driving member 40. This is conducive to realizing the automated operation of the clamp mechanism.

[0039] In a specific embodiment, the sensing assembly 70 includes a through-beam sensor 71 and a baffle 72. The through-beam sensor 71 is connected to the base 10, and the baffle 72 is connected to the toggle member 50. When the first jaw 20 and the second jaw 30 are closed, the baffle 72 is located in the sensing slot of the through-beam sensor 71.

[0040] By adopting this embodiment, the blocking piece 72 blocks the sensing light of the incident sensor 71 , so as to provide a zero position for the driving member 40 , thereby facilitating the automatic control of the movement of the driving member 40 .

[0041] In another specific embodiment, the sensor assembly 70 may use other types of sensors such as a distance sensor or a trigger switch to detect the position of the toggle member 50 .

[0042] In one embodiment, the clamping mechanism further includes a bearing 80 , and two bearings 80 are provided, wherein one bearing 80 is rotatably connected to the first clamping jaw 20 , and the other bearing 80 is rotatably connected to the second clamping jaw 30 .

[0043] The benefit of providing the bearing 80 is that when the toggle member 50 pushes the first jaw 20 and the second jaw 30 to move, the bearing 80 can roll along the side wall of the toggle member 50 to reduce the resistance of friction to the movement process, making the movement of the first jaw 20 and the second jaw 30 smoother.

[0044] In one embodiment, the clamping mechanism further includes a limit assembly 90 , which is connected to the base 10 and is disposed on the movement path of the first clamping jaw 20 and the second clamping jaw 30 to limit the movement range of the first clamping jaw 20 and the second clamping jaw 30 .

[0045] By providing the limiting assembly 90 , the possibility of the first clamping jaw 20 and the second clamping jaw 30 moving over can be reduced, thereby reducing the possibility of pressure damage to the test tube.

[0046] In a specific embodiment, the limit assembly 90 includes two limit pins 91, both of which are connected to the base 10, one of which is located on the same side as the first jaw 20 and at the end of the path where the first jaw 20 moves toward the second jaw 30, and the other limit pin 91 is located on the same side as the second jaw 30 and at the end of the path where the second jaw 30 moves toward the first jaw 20.

[0047] Through this arrangement, the limit pin has a simple structure, is easy to install, and is easy to obtain, which is conducive to reducing production costs.

[0048] In one embodiment, two slide rails 111 are disposed on the base 10 , and the first clamping jaw 20 and the second clamping jaw 30 are both connected with a slider 100 , and the slider 100 is slidably connected to the slide rails 111 .

[0049] In one embodiment, the base 10 includes a mounting block 11 and a motor base 12, the mounting block 11 is connected to the motor base 12, a receiving space is formed between the mounting block 11 and the motor base 12, the driving member 40 is mounted on the top surface of the motor base 12, the output end of the driving member 40 passes through the motor base 12 to the receiving space, the toggle member 50 is arranged in the receiving space, and the mounting block 11 is respectively slidably connected to the first clamping jaw 20 and the second clamping jaw 30. In this way, the structure of the clamping mechanism is compact, and when it is used in external equipment, it is conducive to saving installation space.

[0050] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0051] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent application. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A clamping mechanism, characterized in that: include: A base, a first jaw, a second jaw, a driving member and a toggle member, the first jaw and the second jaw are both slidably connected to the base, and the first jaw and the second jaw are symmetrically arranged on both sides of the base, the driving member is arranged on the base, the toggle member is connected to the output end of the driving member, and the toggle member is arranged between the first jaw and the second jaw, the driving member can drive the toggle member to rotate, and make the toggle member abut against the first jaw and the second jaw respectively, so that the first jaw and the second jaw are separated or closed from each other.

2. The clamping mechanism according to claim 1, characterized in that: The toggle member includes a toggle portion, a first limiting portion and a second limiting portion. The output end of the driving member is connected to the center of the toggle portion. The side wall of the toggle portion is used to abut against the first clamping jaw and the second clamping jaw.

3. The clamping mechanism according to claim 1 or 2, characterized in that: The clamping jaw mechanism also includes a reset member, which is made of elastic material. The reset member includes a first reset member and a second reset member, one end of the first reset member is connected to the base, the other end of the first reset member is connected to the first clamping jaw, one end of the second reset member is connected to the base, the other end of the second reset member is connected to the second clamping jaw, and both the first reset member and the second reset member can be stretched when the first clamping jaw and the second clamping jaw are away from each other.

4. The clamping mechanism according to claim 3, characterized in that: The first restoring member and the second restoring member are both configured as springs.

5. The clamping mechanism according to claim 1 or 2, characterized in that: The clamping mechanism further comprises a sensor component, wherein the sensor component is arranged on the base and is electrically connected to the driving member.

6. The clamping mechanism according to claim 5, characterized in that: The sensing assembly includes a through-beam sensor and a baffle, wherein the through-beam sensor is connected to the base, and the baffle is connected to the toggle member. When the first clamp and the second clamp are closed, the baffle is located in the sensing slot of the through-beam sensor.

7. The clamping mechanism according to claim 1, characterized in that: The clamping jaw mechanism further comprises a bearing, wherein two bearings are provided, wherein one bearing is rotationally connected to the first clamping jaw, and the other bearing is rotationally connected to the second clamping jaw.

8. The clamping mechanism according to claim 1, characterized in that: The clamping jaw mechanism further comprises a limit assembly, wherein the limit assembly is connected to the base and is disposed on a movement path of the first clamping jaw and the second clamping jaw to limit a movement stroke of the first clamping jaw and the second clamping jaw.

9. The clamping mechanism according to claim 1, characterized in that: Two slide rails are arranged on the base, and the first clamping jaw and the second clamping jaw are both connected with a sliding block, and the sliding block is slidably connected with the slide rails.

10. The clamping mechanism according to claim 1, characterized in that: The base includes a mounting block and a motor seat, the mounting block is connected to the motor seat, a receiving space is formed between the mounting block and the motor seat, the driving member is installed on the top surface of the motor seat, the output end of the driving member passes through the motor seat to the receiving space, the toggle member is arranged in the receiving space, and the mounting block is slidably connected to the first clamp and the second clamp respectively.

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