Rotary screwdriver head capable of preventing cover from being damaged

Abstract

The utility model discloses a rotary bit for avoiding cover damage, which comprises a connecting component and a bit body, the lower end of the connecting component is connected with the bit body, and the bit body is connected with a cryopreservation tube cover. According to the rotary bit capable of preventing the cover from being damaged, the vertical groove is formed in the bit body, so that in the matched rotation process of the bit body and the freezing pipe cover, the bit body has toughness through the vertical groove structure, inner side teeth of the freezing pipe cover are better clamped, and the situation that the freezing pipe cover is abraded due to the fact that the inner side teeth of the freezing pipe cover are squeezed is avoided; meanwhile, the situation of cover falling can be better avoided, when the cover is closed, the four ends of the bit body are twisted in the same direction, due to material toughness, the situation that teeth on the inner side of the pipe cover of the cryopreservation pipe are pinned is avoided, the effect similar to a clutch is achieved, and the problem that the teeth on the inner side of the pipe cover of the cryopreservation pipe are loosened due to excessive screwing is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of rotary bits, in particular to a rotary bit for preventing lid damage. Background Technique

[0002] Cryogenic vials are used to store biological samples and are stored in a low-temperature environment, and are widely used in the medical field. During the use of cryogenic vials, in order to facilitate the tightening or separation of the cryogenic vial and the tube cap, a driving mechanism is generally used to drive a rotary bit to cooperate with the tube cap to achieve the tightening or separation of the tube cap. The common rotary bits on the market are made of metal. When opening the cap, the bit directly contacts the inner teeth of the cryogenic vial cap. When the bit rotates at high speed, it is easy to cause rapid wear of the inner teeth of the cap, thereby affecting the reuse effect of the cap. Therefore, in view of the above problems, a rotary bit for preventing lid damage is designed to better meet the actual use requirements. Content of the Utility Model

[0003] The purpose of the utility model is to provide a rotary bit for preventing lid damage to solve the problems raised in the above background technique.

[0004] To achieve the above purpose, the utility model provides the following technical solution: a rotary bit for preventing lid damage, including a connection component and a bit body, the lower end of the connection component is connected with the bit body, and the bit body is connected with the cryogenic vial cap.

[0005] Preferably, the connection component is composed of a first fixed shaft and a first connecting shaft. The first connecting shaft is fixed at the lower end of the first fixed shaft, and the bit body is fixed at the lower end of the first connecting shaft. Through the above structure, the stability of the whole bit can be ensured.

[0006] Preferably, the connection component is composed of a second fixed shaft and a second connecting shaft. The bit body is fixed at the lower end of the second connecting shaft. Through the above structure, the whole bit can be disassembled, which is convenient for the storage of the bit.

[0007] Preferably, a socket rod is fixed at the lower end of the second fixed shaft, and a fastening strip is fixed on the side of the socket rod. Through the action of the socket rod and the fastening strip, a basic guarantee can be provided for the connection and fixation of the second fixed shaft and the second connecting shaft.

[0008] Preferably, a mounting hole is opened at the upper end of the second connecting shaft, and the mounting hole is nested with the socket rod, and the mounting hole and the fastening strip are in interference connection. Through the nesting of the mounting hole and the socket rod, the positioning and assembly of the second fixed shaft and the second connecting shaft can be facilitated. With the interference connection between the mounting hole and the fastening strip, the stability of the connection between the second fixed shaft and the second connecting shaft can be ensured.

[0009] Preferably, a vertical groove is formed in the bit body, and the bit body is snap-fitted with the freezing tube cap. The bit body is made of plastic material. Through the function of the vertical groove, the matching end of the bit body and the freezing tube cap can have a certain elasticity, which can not only prevent the bit body from being damaged, but also avoid the problem of slipping teeth during the tightening process of the freezing tube cap.

[0010] Compared with the prior art, the beneficial effects of the present utility model are as follows: for the rotary bit that avoids lid damage, by providing a vertical groove in the bit body, during the rotational matching process of the bit body and the freezing tube cap, the vertical groove structure can endow the bit body with toughness, better catch the inner teeth of the freezing tube cap, and will not cause extrusion to the inner teeth of the freezing tube cap, resulting in wear of the freezing tube cap. At the same time, it can better avoid the situation of lid dropping. When closing the lid, the four ends of the bit body twist in the same direction. Due to the toughness of the material, the inner teeth of the freezing tube cap will not be jammed, playing a role similar to a clutch, preventing the problem of slipping teeth caused by over-tightening of the inner teeth of the freezing tube cap. At the same time, because the plastic bit has good hardness, it can effectively avoid the situation of bit fracture during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a bottom view three-dimensional structure schematic diagram of the whole device in the first embodiment of the present utility model;

[0012] Figure 2 is a front view three-dimensional structure schematic diagram of the whole device in the first embodiment of the present utility model and the freezing tube cap;

[0013] Figure 3 is a front view three-dimensional structure schematic diagram of the whole device in the second embodiment of the present utility model and the freezing tube cap.

[0014] In the figure: 1. Connection assembly; 11. First fixed shaft; 12. First connecting shaft; 13. Second fixed shaft; 131. Insertion rod; 132. Fastening strip; 14. Second connecting shaft; 141. Installation hole; 2. Bit body; 21. Vertical groove; 3. Freezing tube cap. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0016] Please refer to Figures 1 - 3, the present utility model provides a technical solution: a rotating bit that avoids lid damage, including a connection component 1 and a bit body 2. The lower end of the connection component 1 is connected to the bit body 2, and the bit body 2 is interconnected with the cryotube cap 3.

[0017] The connection component 1 is composed of a first fixed shaft 11 and a first connecting shaft 12. The first connecting shaft 12 is fixed to the lower end of the first fixed shaft 11, and the bit body 2 is fixed to the lower end of the first connecting shaft 12. A vertical groove 21 is provided on the bit body 2, and the bit body 2 is snap-connected to the cryotube cap 3, and the bit body 2 is made of plastic material;

[0018] Embodiment 1:

[0019] As Figure 1 and Figure 2 shown, the entire device consists of an integrated structure of the first fixed shaft 11, the first connecting shaft 12, and the bit body 2. During actual use, by connecting the external rotation driving mechanism to the first fixed shaft 11, when rotating and tightening or loosening the cryotube cap 3, by nesting the bit body 2 with the cryotube cap 3, and with the cooperation of the vertical groove 21, the four end parts at the lower end of the bit body 2 can have a certain elasticity, ensuring the stability of the connection between the bit body 2 and the cryotube cap 3. Then, by driving the first fixed shaft 11, the first connecting shaft 12, and the bit body 2 to rotate through the driving mechanism, at this time, the four end parts at the lower end of the bit body 2 twist in the same direction, which can provide sufficient torque for the cryotube cap 3, thereby realizing the screwing action of the cryotube cap 3. And when tightening the cryotube cap 3, when the thread on the cryotube cap 3 is fully engaged with the cryotube, due to the toughness of the four end parts at the lower end of the bit body 2, it can not only avoid the problem of slipping teeth caused by tightening the cryotube cap 3 and the cryotube, but also avoid the problem of fracture of the four end parts at the lower end of the bit body 2;

[0020] The connection component 1 is composed of a second fixed shaft 13 and a second connecting shaft 14. The bit body 2 is fixed to the lower end of the second connecting shaft 14. A plug rod 131 is fixed to the lower end of the second fixed shaft 13, and a fastening strip 132 is fixed to the side of the plug rod 131. An installation hole 141 is provided at the upper end of the second connecting shaft 14, and the installation hole 141 is nested with the plug rod 131, and the installation hole 141 and the fastening strip 132 are in interference connection;

[0021] Embodiment 2:

[0022] As Figures 1 - 3As shown, the entire device consists of a second fixed shaft 13, a second connecting shaft 14, and a bit body 2. During actual use, first, the second fixed shaft 13 and the second connecting shaft 14 are assembled. The positioning function can be achieved by nesting the mounting hole 141 with the plug rod 131. The fixation of the second fixed shaft 13 and the second connecting shaft 14 can be realized by the interference connection between the mounting hole 141 and the fastening strip 132, ensuring the stability of the connection between the second fixed shaft 13 and the second connecting shaft 14, thus realizing the assembly of the entire device. And it can be disassembled after use, which is convenient for storage. After the device is assembled, by connecting the external rotation drive mechanism to the second fixed shaft 13, when rotating and tightening or loosening the cap 3 of the cryotube, by nesting the bit body 2 with the cap 3 of the cryotube, with the cooperation of the vertical groove 21, the four ends at the lower end of the bit body 2 can have a certain elasticity, ensuring the stability of the connection between the bit body 2 and the cap 3 of the cryotube. Then, the drive mechanism drives the second fixed shaft 13, the second connecting shaft 14, and the bit body 2 to rotate. At this time, the four ends at the lower end of the bit body 2 twist in the same direction, which can provide sufficient torque for the cap 3 of the cryotube, thus realizing the screwing action of the cap 3 of the cryotube. And when tightening the cap 3 of the cryotube, when the thread on the cap 3 of the cryotube is fully engaged with the cryotube, due to the toughness of the four ends at the lower end of the bit body 2, it can not only avoid the problem of slipping teeth caused by tightening the cap 3 of the cryotube and the cryotube, but also avoid the problem of fracture of the four ends at the lower end of the bit body 2.

[0023] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rotary screwdriver bit for preventing a cover from being damaged, comprising a connecting assembly (1) and a screwdriver bit body (2), characterized in that: The lower end of the connection component (1) is connected to a batch head body (2), and the batch head body (2) is connected to a cryotube cover (3). The connection component (1) is composed of a second fixed shaft (13) and a second connecting shaft (14). The batch head body (2) is fixed to the lower end of the second connecting shaft (14), a connecting rod (131) is fixed to the lower end of the second fixed shaft (13), and a fastening strip (132) is fixed to the side of the connecting rod (131). A mounting hole (141) is provided at the upper end of the second connecting shaft (14), and the mounting hole (141) and the connecting rod (131) are nested in connection, and the mounting hole (141) and the fastening strip (132) are interference fit.

2. A rotary screwdriver bit for preventing cover damage according to claim 1, characterized in that: The connecting assembly (1) is composed of a first fixed shaft (11) and a first connecting shaft (12); the first connecting shaft (12) is fixed to the lower end of the first fixed shaft (11); and the bit body (2) is fixed to the lower end of the first connecting shaft (12).

3. A rotary screwdriver bit for preventing cover damage according to claim 1, characterized in that: The bit body (2) is provided with a vertical groove (21), and the bit body (2) is snap-fitted to the cryotube cover (3), and the bit body (2) is made of plastic material.

Images