CN116592038A - Hand-turning screw and lock head fixing piece - Google Patents

Abstract

The invention relates to a hand-turning screw and a lock head fixing piece, which belong to the technical field of connecting accessories and comprise a fixed shell, wherein a locking rotating shaft is rotationally arranged in the fixed shell, and a locking mechanism is also arranged in the fixed shell and can fix the axial position of the locking rotating shaft in the fixed shell; the lower end of the locking rotating shaft is provided with a locking head. The locking rotating shaft is rotatably arranged in the fixed shell by using the fixed shell as a supporting body for the locking rotating shaft so as to adjust the position of the locking head; the locking mechanism is used for completing the stability of the locking head in the locking state, so that the situation that the hand-rotating screw is loosened due to the influence of external vibration environment when the hand-rotating screw is used as a fixing piece in the locking state is facilitated to be reduced.

Description

Hand-turning screw and lock head fixing piece

Technical Field

The invention belongs to the technical field of connecting accessories, and particularly relates to a hand-turning screw and a lock head fixing piece.

Background

The prior server is usually carried out in a mode of interconnecting a plurality of boards due to space limitation when the functions are realized, but the boards are connected only through connectors, so that the connection is not firm enough, structural members are required to be used for reinforcing and fastening, the fastening mode is usually fixed through screws, and the common screws are not beneficial to daily maintenance.

Currently, there are two general types of fasteners: the first type of commonly used fixing piece is a screw type hand-turning screw (shown in fig. 1), and the screw type hand-turning screw is used for fastening two structural members by utilizing threads, so that the screw type hand-turning screw is reliable; however, the first type of screw currently has the problems that if the screw is locked by hands, the torsion of the screw cannot be quantified, the reliability data cannot be quantified, and in addition, the screw thread type fixing mode needs to be screwed for a plurality of times during maintenance, so that the maintenance time is long. The second type of commonly used fixing piece is an i-pin (refer to fig. 2 and fig. 3 are schematic views of the use state of the second fixing piece), the i-pin is matched with the opening of the hand piece, and the two structural pieces are clamped by the i-pin; however, after the i-shaped nail is locked in a clamping manner, the friction force is increased by utilizing the spring in the screw to avoid the resilience of the i-shaped nail, and the fixing manner has no reliable self-locking structure after being installed in place, so that the problem of loosening easily occurs in a vibration environment.

In any of the above-mentioned fixing members, the locking state is unstable, which results in an increased probability of the fixing member getting loose in the vibration environment during the operation of the server.

Disclosure of Invention

The invention provides a hand-turning screw and a locking head fixing piece, which are used for solving the problem that the fixing piece is easy to loose in a later vibration use environment.

The invention is realized by the following technical scheme:

the hand-turning screw comprises a fixed shell, wherein a locking rotating shaft is rotationally arranged in the fixed shell, and a locking mechanism is also arranged in the fixed shell and can fix the axial position of the locking rotating shaft in the fixed shell; the lower end of the locking rotating shaft is provided with a locking head.

The locking rotating shaft is rotatably arranged in the fixed shell by using the fixed shell as a supporting body for the locking rotating shaft so as to adjust the position of the locking head; the locking mechanism is used for completing the stability of the locking head in the locking state, so that the situation that the hand-rotating screw is loosened due to the influence of external vibration environment when the hand-rotating screw is used as a fixing piece in the locking state is facilitated to be reduced.

In a further improvement of the present invention, at least the outer surface of the fixed housing is made of plastic material. The outer surface of the fixed shell is made of plastic, so that the fixed shell is taken into consideration as a fitting for installation and use in the server, and the surface of the fixed shell is made of plastic, thereby being beneficial to avoiding the conditions that static electricity or electric conduction and the like influence the internal fitting of the server.

In addition, the fixed shell is internally provided with a first rotating shaft long hole which can limit the radial movement of the locking rotating shaft. The first rotating shaft long hole can be matched with the locking rotating shaft to limit radial movement of the locking rotating shaft in the use process, so that the operation precision control degree of the locking rotating shaft can be improved, and the hand rotating screw can be improved, particularly in the locking state.

In addition, the lower part of the fixed shell is provided with a second rotating shaft long hole which expands outwards along the radial direction of the first rotating shaft long hole; the lower part of the locking rotating shaft is provided with a rotating shaft boss corresponding to the second rotating shaft long hole. The second rotating shaft long hole is matched with the rotating shaft boss on the lower part of the locking rotating shaft, so that the locking rotating shaft is prevented from being separated axially when the top end of the locking rotating shaft is operated.

The invention further improves that the locking mechanism comprises one to two limit grooves and a rotating shaft clamping point matched with the limit grooves; the limiting groove is arranged at the lower part of the inner wall of the fixed shell, and the rotating shaft clamping point is arranged on the side wall of the locking rotating shaft. Through the operation locking pivot for spacing recess and pivot stuck point form the state of mutually supporting, form the fixed to locking pivot, thereby realize locking head stability under the locking state.

According to a further improvement of the invention, the limiting groove is arranged on the inner wall of the long hole of the second rotating shaft, and the rotating shaft clamping point is arranged on the rotating shaft boss. Because the diameter of the second rotating shaft long hole is larger than that of the first rotating shaft long hole, the limiting groove is arranged on the inner wall of the second rotating shaft long hole, and the processing difficulty is reduced.

The invention further improves that the upper end of the locking rotating shaft is rotatably provided with an operating handle, and a compression spring is sleeved on the locking rotating shaft between the operating handle and the fixed shell; and a locking channel which allows the clamping point of the rotating shaft to pass through so as to enter the limiting groove is also arranged on the inner wall of the second rotating shaft long hole. Lifting the operating handle and rotating the operating handle, so that the clamping point of the rotating shaft enters the limiting groove along the locking channel, and the compression spring effectively supports the operating handle and the fixed shell under elastic acting force, so that a locking force for preventing the clamping point of the rotating shaft from being separated from the limiting groove is provided for locking the rotating shaft.

In addition, the invention further improves that a pressing plate is sleeved on the locking rotating shaft between the compression spring and the operating handle. The elastic force bearing area for bearing the jacking of the compression spring can be increased through the pressing plate, so that better force feedback is formed.

Further improvement of the invention is that the rotating side of the operating handle is provided with a guiding fillet. The guide fillet can provide a guide for the rotation of the operating handle.

The lock head fixing piece comprises a locking plate for locking and attaching a locking head, wherein a rectangular locking slot hole is formed in the locking plate, arc-shaped slot holes which are outwards expanded are formed in two long side edges of the locking slot hole, and arc-shaped edges of the two arc-shaped slot holes are matched with a locking rotating shaft; the diameter of the locking rotating shaft is larger than the width of the locking head and smaller than the length of the locking head. Because the locking head is considered to simply enter the rectangular locking slot and the top surface of the locking head is contacted with the two sides of the bottom surface of the locking slot, the locking head can slide along the length direction of the locking slot, so that the unstable locking condition can be caused; therefore, the two sides of the locking slot hole are additionally provided with the arc slot holes so as to be matched with the locking rotating shaft, wherein the diameter of the locking rotating shaft is larger than the width of the locking head but smaller than the length of the locking head, and the locking rotating shaft penetrates through the locking slot holes and rotates by 90 degrees, so that the two ends of the locking head in the length direction are contacted with the outer sides of the arc slot holes, and the locking rotating shaft is prevented from shaking possibly in a locking state.

From the technical scheme, the beneficial effects of the invention are as follows: the locking rotating shaft penetrates through the fixed shell, and can axially move in the fixed shell along the axial direction of the locking rotating shaft, and can rotate around the circumferential direction of the locking rotating shaft in the fixed shell; that is, the lock shaft and the fixed housing are in a state capable of being displaced relatively freely. The locking head at the lower end of the locking rotating shaft is a locking end for fixing the board card, so that the state of the locking rotating shaft is required to be adjusted in the whole operation process, and the state position of the locking head reaches a set position, so that the locking function is conveniently finished. The locking mechanism is used as a mechanism capable of locking the position state of the locking rotating shaft in the fixed shell, so that after the locking head reaches the locking position by operating the locking rotating shaft, the locking mechanism is used for fixing the position of the locking rotating shaft in the fixed shell, wherein the movement of the locking rotating shaft in the circumferential direction and the axial direction of the locking rotating shaft is limited, and the stable state of the locking head is achieved.

Drawings

In order to more clearly illustrate the technical solutions of the present invention, the drawings that are needed in the description will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural view of a first type of fixing member in the prior art.

Fig. 2 is a schematic structural view of a second type of fixing member in the prior art.

Fig. 3 is a schematic view showing a second type of fixing member in use state in the prior art.

Fig. 4 is a schematic structural view of an embodiment of the present invention.

Fig. 5 is a schematic view of the partial cross-sectional structure of fig. 4.

Fig. 6 is a schematic cross-sectional view of an embodiment of the present invention.

FIG. 7 is a schematic view showing the combination of the locking shaft in the fixed housing according to the embodiment of the present invention.

Fig. 8 is a schematic cross-sectional view of a stationary housing according to an embodiment of the invention.

Fig. 9 is a schematic view of a locking spindle according to an embodiment of the present invention.

Fig. 10 is a schematic view of a locking plate according to an embodiment of the present invention.

In the accompanying drawings: 1. the device comprises a fixed shell, 11, a fixed lug plate, 12, a guide part, 2, a first rotating shaft long hole, 3, a second rotating shaft long hole, 31, a limiting groove, 32, a locking channel, 4, a spring clamping groove, 5, a locking rotating shaft, 51, a rotating shaft boss, 52, a rotating shaft clamping point, 53, a locking head, 6, an operating handle, 7, a locking plate, 71, a locking groove hole, 72, an arc groove hole, 8, a pressing plate, 9 and a compression spring.

Detailed Description

In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions of the present invention will be clearly and completely described below with reference to the drawings in this specific embodiment, and it is apparent that the embodiments described below are only some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, based on the embodiments in this patent, which would be within the purview of one of ordinary skill in the art without the particular effort to make the invention are intended to be within the scope of the patent protection.

As shown in fig. 4-9, the invention discloses a hand-turning screw, which comprises a fixed shell 1, wherein a locking rotating shaft 5 is rotationally arranged in the fixed shell 1, a locking mechanism is also arranged in the fixed shell 1, and the locking mechanism can fix the axial position of the locking rotating shaft 5 in the fixed shell 1; the lower end of the locking rotating shaft 5 is provided with a locking head 53. By using the fixed housing 1 as a carrier for the locking shaft 5, the locking shaft 5 is rotatably provided inside the fixed housing 1 to form adjustment of the position of the locking head 53; the locking mechanism completes the stability of the locking head 53 in the locked state, thereby helping to reduce the loosening of the hand-rotated screw as a fixing member in the locked state due to the influence of external vibration environment.

The cross section of the locking head 53 is arc-shaped, that is, the top surface of the locking head 53, that is, the surface of the locking head 53 close to the locking shaft 5 is a plane, and the surface of the locking head 53 opposite to the top surface of the locking head 53 is arc-shaped. The above structure can achieve tightening by the top surfaces of the locking heads 53 at both sides of the locking shaft 5, similar to the structure of the i-pin.

In the initial state, the locking rotating shaft 5 penetrates through the inside of the fixed shell 1, and the locking rotating shaft 5 can axially move in the fixed shell 1 along the axial direction of the locking rotating shaft 5 and can rotate around the circumferential direction of the locking rotating shaft in the fixed shell 1; that is, the lock shaft 5 and the fixed housing 1 are in a state capable of being displaced relatively freely. Since the locking head 53 at the lower end of the locking shaft 5 is a locking end for fixing the board card, the state of the locking shaft 5 needs to be adjusted in the whole operation process, so that the state position of the locking head 53 reaches a set position, and the locking function is conveniently completed. The locking mechanism is used as a mechanism capable of locking the position state of the locking rotary shaft 5 in the fixed housing 1, so that by operating the locking rotary shaft 5, after the locking head 53 reaches the locking position, the locking mechanism is used to complete the position fixing of the locking rotary shaft 5 in the fixed housing 1, wherein the movement of the locking rotary shaft 5 in the circumferential direction and the axial direction thereof is limited, thereby achieving a stable state of the locking head 53.

As shown in fig. 4-9, the invention discloses a hand-turning screw, which comprises a fixed shell 1, wherein a locking rotating shaft 5 is rotationally arranged in the fixed shell 1, a locking mechanism is also arranged in the fixed shell 1, and the locking mechanism can fix the axial position of the locking rotating shaft 5 in the fixed shell 1; the lower end of the locking rotating shaft 5 is provided with a locking head 53. By using the fixed housing 1 as a carrier for the locking shaft 5, the locking shaft 5 is rotatably provided inside the fixed housing 1 to form adjustment of the position of the locking head 53; the locking mechanism completes the stability of the locking head 53 in the locked state, thereby helping to reduce the loosening of the hand-rotated screw as a fixing member in the locked state due to the influence of external vibration environment. The cross section of the locking head 53 is arc-shaped, that is, the top surface of the locking head 53, that is, the surface of the locking head 53 close to the locking shaft 5 is a plane, and the surface of the locking head 53 opposite to the top surface of the locking head 53 is arc-shaped. The above structure can achieve tightening by the top surfaces of the locking heads 53 at both sides of the locking shaft 5, similar to the structure of the i-pin. The locking rotating shaft 5 penetrates through the fixed shell 1, and the locking rotating shaft 5 can axially move in the fixed shell 1 along the axial direction of the locking rotating shaft 5 and also can rotate around the circumferential direction of the locking rotating shaft in the fixed shell 1; that is, the lock shaft 5 and the fixed housing 1 are in a state capable of being displaced relatively freely. Since the locking head 53 at the lower end of the locking shaft 5 is a locking end for fixing the board card, the state of the locking shaft 5 needs to be adjusted in the whole operation process, so that the state position of the locking head 53 reaches a set position, and the locking function is conveniently completed. The locking mechanism is used as a mechanism capable of locking the position state of the locking rotary shaft 5 in the fixed housing 1, so that by operating the locking rotary shaft 5, after the locking head 53 reaches the locking position, the locking mechanism is used to complete the position fixing of the locking rotary shaft 5 in the fixed housing 1, wherein the movement of the locking rotary shaft 5 in the circumferential direction and the axial direction thereof is limited, thereby achieving a stable state of the locking head 53.

Wherein, the outer surface of the at least fixed shell 1 is made of plastic material. The outer surface of the fixed housing 1 is made of plastic, so that the fixed housing 1 is considered as a fitting for installation in a server, and the surface of the fixed housing is made of plastic, thereby being beneficial to avoiding the conditions that static electricity, electric conduction and the like affect the internal fittings of the server.

The locking shaft 5 is made of metal. The aim is to ensure the structural strength of the locking shaft 5.

In the initial state, since the hand screw of the device is considered to be a tool for forming connection and fixation in a plurality of boards connected in parallel, the fixed housing 1 is a component in contact with the internal fittings of the server, so that damage to the surrounding internal fittings of the server due to static electricity, conduction and the like is mainly avoided for safety. At least the surface of the fixed housing 1 is made of an insulating plastic material. The locking shaft 5 needs to relatively move in the fixed housing 1, and the axial length of the locking shaft 5 is long, so that the material of the locking shaft 5 is selected to be a metal material in order to ensure the normal use and the stable use state of the hand-turning screw of the device, and the purpose is to achieve the structural support and the use stability of the locking shaft 5.

As shown in fig. 4-9, the invention discloses a hand-turning screw, which comprises a fixed shell 1, wherein a locking rotating shaft 5 is rotationally arranged in the fixed shell 1, a locking mechanism is also arranged in the fixed shell 1, and the locking mechanism can fix the axial position of the locking rotating shaft 5 in the fixed shell 1; the lower end of the locking rotating shaft 5 is provided with a locking head 53. By using the fixed housing 1 as a carrier for the locking shaft 5, the locking shaft 5 is rotatably provided inside the fixed housing 1 to form adjustment of the position of the locking head 53; the locking mechanism completes the stability of the locking head 53 in the locked state, thereby helping to reduce the loosening of the hand-rotated screw as a fixing member in the locked state due to the influence of external vibration environment. The cross section of the locking head 53 is arc-shaped, that is, the top surface of the locking head 53, that is, the surface of the locking head 53 close to the locking shaft 5 is a plane, and the surface of the locking head 53 opposite to the top surface of the locking head 53 is arc-shaped. The above structure can achieve tightening by the top surfaces of the locking heads 53 at both sides of the locking shaft 5, similar to the structure of the i-pin. The locking rotating shaft 5 penetrates through the fixed shell 1, and the locking rotating shaft 5 can axially move in the fixed shell 1 along the axial direction of the locking rotating shaft 5 and also can rotate around the circumferential direction of the locking rotating shaft in the fixed shell 1; that is, the lock shaft 5 and the fixed housing 1 are in a state capable of being displaced relatively freely. Since the locking head 53 at the lower end of the locking shaft 5 is a locking end for fixing the board card, the state of the locking shaft 5 needs to be adjusted in the whole operation process, so that the state position of the locking head 53 reaches a set position, and the locking function is conveniently completed. The locking mechanism is used as a mechanism capable of locking the position state of the locking rotary shaft 5 in the fixed housing 1, so that by operating the locking rotary shaft 5, after the locking head 53 reaches the locking position, the locking mechanism is used to complete the position fixing of the locking rotary shaft 5 in the fixed housing 1, wherein the movement of the locking rotary shaft 5 in the circumferential direction and the axial direction thereof is limited, thereby achieving a stable state of the locking head 53.

Wherein, a first shaft long hole 2 which can limit the radial movement of the locking shaft 5 is arranged in the fixed shell 1. The first rotating shaft long hole 2 can be matched with the locking rotating shaft 5 to limit radial movement of the locking rotating shaft 5 in the use process, so that the operation precision control degree of the locking rotating shaft 5 can be improved, and the hand-rotating screw can be improved, particularly in the locking state. The lower part in the fixed shell 1 is provided with a second rotating shaft long hole 3 which expands outwards along the radial direction of the first rotating shaft long hole 2; the lower part of the locking rotary shaft 5 is provided with a rotary shaft boss 51 corresponding to the second rotary shaft long hole 3. The second long hole 3 is matched with the rotating shaft boss 51 on the lower part of the locking rotating shaft 5, so that the locking rotating shaft 5 is prevented from being axially separated when the top end of the locking rotating shaft 5 is operated.

In the initial state, considering that the locking shaft 5 is to be extended downward to extend the locking head 53 downward during actual use, thereby completing the operation of the locking head 53, it is also considered that the locking shaft 5 is not moved upward in transition when the upper end of the locking shaft 5 is operated, thereby causing the locking head 53 to be in transitional contact with the board card.

As shown in fig. 4-9, the invention discloses a hand-turning screw, which comprises a fixed shell 1, wherein a locking rotating shaft 5 is rotationally arranged in the fixed shell 1, a locking mechanism is also arranged in the fixed shell 1, and the locking mechanism can fix the axial position of the locking rotating shaft 5 in the fixed shell 1; the lower end of the locking rotating shaft 5 is provided with a locking head 53. By using the fixed housing 1 as a carrier for the locking shaft 5, the locking shaft 5 is rotatably provided inside the fixed housing 1 to form adjustment of the position of the locking head 53; the locking mechanism completes the stability of the locking head 53 in the locked state, thereby helping to reduce the loosening of the hand-rotated screw as a fixing member in the locked state due to the influence of external vibration environment. The cross section of the locking head 53 is arc-shaped, that is, the top surface of the locking head 53, that is, the surface of the locking head 53 close to the locking shaft 5 is a plane, and the surface of the locking head 53 opposite to the top surface of the locking head 53 is arc-shaped. The above structure can achieve tightening by the top surfaces of the locking heads 53 at both sides of the locking shaft 5, similar to the structure of the i-pin. The locking rotating shaft 5 penetrates through the fixed shell 1, and the locking rotating shaft 5 can axially move in the fixed shell 1 along the axial direction of the locking rotating shaft 5 and also can rotate around the circumferential direction of the locking rotating shaft in the fixed shell 1; that is, the lock shaft 5 and the fixed housing 1 are in a state capable of being displaced relatively freely. Since the locking head 53 at the lower end of the locking shaft 5 is a locking end for fixing the board card, the state of the locking shaft 5 needs to be adjusted in the whole operation process, so that the state position of the locking head 53 reaches a set position, and the locking function is conveniently completed. The locking mechanism is used as a mechanism capable of locking the position state of the locking rotary shaft 5 in the fixed housing 1, so that by operating the locking rotary shaft 5, after the locking head 53 reaches the locking position, the locking mechanism is used to complete the position fixing of the locking rotary shaft 5 in the fixed housing 1, wherein the movement of the locking rotary shaft 5 in the circumferential direction and the axial direction thereof is limited, thereby achieving a stable state of the locking head 53.

The fixed housing 1 is internally provided with a first shaft long hole 2 which can limit the radial movement of the locking shaft 5. The first rotating shaft long hole 2 can be matched with the locking rotating shaft 5 to limit radial movement of the locking rotating shaft 5 in the use process, so that the operation precision control degree of the locking rotating shaft 5 can be improved, and the hand-rotating screw can be improved, particularly in the locking state.

The lower part in the fixed shell 1 is provided with a second rotating shaft long hole 3 which expands outwards along the radial direction of the first rotating shaft long hole 2; the lower part of the locking rotary shaft 5 is provided with a rotary shaft boss 51 corresponding to the second rotary shaft long hole 3. The second long hole 3 is matched with the rotating shaft boss 51 on the lower part of the locking rotating shaft 5, so that the locking rotating shaft 5 is prevented from being axially separated when the top end of the locking rotating shaft 5 is operated.

The locking mechanism comprises one or two limit grooves 31 and a rotating shaft clamping point 52 matched with the limit grooves 31; the limit groove 31 is disposed at the lower part of the inner wall of the fixed housing 1, and the spindle latch 52 is disposed on the side wall of the locking spindle 5. By operating the locking rotary shaft 5, the limit groove 31 and the rotary shaft clamping point 52 form a mutually matched state, and the locking rotary shaft 5 is fixed, so that the locking head 53 is stable in the locking state. The limiting groove 31 is disposed on the inner wall of the second shaft slot hole 3, and the shaft clamping point 52 is disposed on the shaft boss 51. Since the diameter of the second rotating shaft long hole 3 is larger than that of the first rotating shaft long hole 2, the limiting groove 31 is arranged on the inner wall of the second rotating shaft long hole 3, so that the processing difficulty is reduced.

In the initial state, since the position of the limit groove 31 on the fixed housing 1 is close to one end of the locking head 53, a stable operation of the locking head 53 is formed by the cooperation of the limit groove 31 and the spindle clamping point 52.

As shown in fig. 4-9, the invention discloses a hand-turning screw, which comprises a fixed shell 1, wherein a locking rotating shaft 5 is rotationally arranged in the fixed shell 1, a locking mechanism is also arranged in the fixed shell 1, and the locking mechanism can fix the axial position of the locking rotating shaft 5 in the fixed shell 1; the lower end of the locking rotating shaft 5 is provided with a locking head 53. By using the fixed housing 1 as a carrier for the locking shaft 5, the locking shaft 5 is rotatably provided inside the fixed housing 1 to form adjustment of the position of the locking head 53; the locking mechanism completes the stability of the locking head 53 in the locked state, thereby helping to reduce the loosening of the hand-rotated screw as a fixing member in the locked state due to the influence of external vibration environment. The cross section of the locking head 53 is arc-shaped, that is, the top surface of the locking head 53, that is, the surface of the locking head 53 close to the locking shaft 5 is a plane, and the surface of the locking head 53 opposite to the top surface of the locking head 53 is arc-shaped. The above structure can achieve tightening by the top surfaces of the locking heads 53 at both sides of the locking shaft 5, similar to the structure of the i-pin. The locking rotating shaft 5 penetrates through the fixed shell 1, and the locking rotating shaft 5 can axially move in the fixed shell 1 along the axial direction of the locking rotating shaft 5 and also can rotate around the circumferential direction of the locking rotating shaft in the fixed shell 1; that is, the lock shaft 5 and the fixed housing 1 are in a state capable of being displaced relatively freely. Since the locking head 53 at the lower end of the locking shaft 5 is a locking end for fixing the board card, the state of the locking shaft 5 needs to be adjusted in the whole operation process, so that the state position of the locking head 53 reaches a set position, and the locking function is conveniently completed. The locking mechanism is used as a mechanism capable of locking the position state of the locking rotary shaft 5 in the fixed housing 1, so that by operating the locking rotary shaft 5, after the locking head 53 reaches the locking position, the locking mechanism is used to complete the position fixing of the locking rotary shaft 5 in the fixed housing 1, wherein the movement of the locking rotary shaft 5 in the circumferential direction and the axial direction thereof is limited, thereby achieving a stable state of the locking head 53.

The fixed housing 1 is internally provided with a first shaft long hole 2 which can limit the radial movement of the locking shaft 5. The first rotating shaft long hole 2 can be matched with the locking rotating shaft 5 to limit radial movement of the locking rotating shaft 5 in the use process, so that the operation precision control degree of the locking rotating shaft 5 can be improved, and the hand-rotating screw can be improved, particularly in the locking state.

The lower part in the fixed shell 1 is provided with a second rotating shaft long hole 3 which expands outwards along the radial direction of the first rotating shaft long hole 2; the lower part of the locking rotary shaft 5 is provided with a rotary shaft boss 51 corresponding to the second rotary shaft long hole 3. The second long hole 3 is matched with the rotating shaft boss 51 on the lower part of the locking rotating shaft 5, so that the locking rotating shaft 5 is prevented from being axially separated when the top end of the locking rotating shaft 5 is operated.

The locking mechanism comprises one to two limit grooves 31 and a rotating shaft clamping point 52 matched with the limit grooves 31; the limit groove 31 is disposed at the lower part of the inner wall of the fixed housing 1, and the spindle latch 52 is disposed on the side wall of the locking spindle 5. By operating the locking rotary shaft 5, the limit groove 31 and the rotary shaft clamping point 52 form a mutually matched state, and the locking rotary shaft 5 is fixed, so that the locking head 53 is stable in the locking state. The limiting groove 31 is disposed on the inner wall of the second shaft slot hole 3, and the shaft clamping point 52 is disposed on the shaft boss 51. Since the diameter of the second rotating shaft long hole 3 is larger than that of the first rotating shaft long hole 2, the limiting groove 31 is arranged on the inner wall of the second rotating shaft long hole 3, so that the processing difficulty is reduced.

Wherein, the upper end of the locking rotating shaft 5 is rotatably provided with an operating handle 6, and a compression spring 9 is sleeved on the locking rotating shaft 5 between the operating handle 6 and the fixed shell 1; the top end of the fixed shell 1 is provided with a spring clamping groove 4 for accommodating the lower part of the compression spring 9, and the radial deflection of the spring clamping groove 4 is prevented. The inner wall of the second long hole 3 is also provided with a locking channel 32 which allows the shaft clamping point 52 to pass through to enter the limit groove 31. Lifting the operating handle 6 and rotating the operating handle so that the rotating shaft clamping point 52 enters the limiting groove 31 along the locking channel 32, and the compression spring 9 forms effective support for the operating handle 6 and the fixed shell 1 under elastic acting force, so that a locking force for preventing the rotating shaft clamping point 52 from being separated from the limiting groove 31 is provided for locking the rotating shaft 5. A pressing plate 8 is sleeved on the locking rotating shaft 5 between the compression spring 9 and the operating handle 6. The pressure plate 8 can increase the elastic force bearing area for bearing the jacking of the compression spring 9, so that better force feedback is formed. The rotating side of the operating handle 6 is provided with a guiding fillet. The guide rounded corners provide a guide for the rotation of the operating handle 6.

In the initial state, the pressing plate 8 is positioned below the operation handle 6 and can bear the elastic force of the compression spring 9 so as to promote the force feedback of the compression spring 9 to an operator. One side of the operation handle 6 is provided with a guiding fillet so as to facilitate the rotation of the operation handle 6 to one side, and the angle on the side opposite to the guiding fillet is a right angle, so that when the operation wrench does not rotate, the operation handle 6 can be prevented from rotating randomly by forming a fit between the support legs and the pressing plate 8.

As shown in fig. 4-9, the invention discloses a hand-turning screw, which comprises a fixed shell 1, wherein a locking rotating shaft 5 is rotationally arranged in the fixed shell 1, a locking mechanism is also arranged in the fixed shell 1, and the locking mechanism can fix the axial position of the locking rotating shaft 5 in the fixed shell 1; the lower end of the locking rotating shaft 5 is provided with a locking head 53. By using the fixed housing 1 as a carrier for the locking shaft 5, the locking shaft 5 is rotatably provided inside the fixed housing 1 to form adjustment of the position of the locking head 53; the locking mechanism completes the stability of the locking head 53 in the locked state, thereby helping to reduce the loosening of the hand-rotated screw as a fixing member in the locked state due to the influence of external vibration environment. The cross section of the locking head 53 is arc-shaped, that is, the top surface of the locking head 53, that is, the surface of the locking head 53 close to the locking shaft 5 is a plane, and the surface of the locking head 53 opposite to the top surface of the locking head 53 is arc-shaped. The above structure can achieve tightening by the top surfaces of the locking heads 53 at both sides of the locking shaft 5, similar to the structure of the i-pin. The locking rotating shaft 5 penetrates through the fixed shell 1, and the locking rotating shaft 5 can axially move in the fixed shell 1 along the axial direction of the locking rotating shaft 5 and also can rotate around the circumferential direction of the locking rotating shaft in the fixed shell 1; that is, the lock shaft 5 and the fixed housing 1 are in a state capable of being displaced relatively freely. Since the locking head 53 at the lower end of the locking shaft 5 is a locking end for fixing the board card, the state of the locking shaft 5 needs to be adjusted in the whole operation process, so that the state position of the locking head 53 reaches a set position, and the locking function is conveniently completed. The locking mechanism is used as a mechanism capable of locking the position state of the locking rotary shaft 5 in the fixed housing 1, so that by operating the locking rotary shaft 5, after the locking head 53 reaches the locking position, the locking mechanism is used to complete the position fixing of the locking rotary shaft 5 in the fixed housing 1, wherein the movement of the locking rotary shaft 5 in the circumferential direction and the axial direction thereof is limited, thereby achieving a stable state of the locking head 53.

The fixed shell 1 is provided with a fixed ear plate 11 which can fix the fixed shell 1 in a server, the lower part of the side wall of the fixed shell 1 is provided with a guide part 12 protruding out of the surface of the fixed shell 1, and installation guide is provided for the installation of the fixed shell 1 through the guide part 12.

In the initial state, the fixed shell 1 is placed in the server, the fixed shell 1 is fixed by penetrating the screw through the fixed ear plate 11, and meanwhile, the fixed shell 1 is aligned in the installation position by matching with the guide part 12.

As shown in fig. 4-10, the invention discloses a lock head fixing piece, which comprises a locking plate 7 for locking a locking head 53, wherein a rectangular locking slotted hole 71 is formed in the locking plate 7, two long side edges of the locking slotted hole 71 are respectively provided with an outwards-expanding arc slotted hole 72, and the arc edges of the two arc slotted holes 72 are matched with a locking rotating shaft 5; the diameter of the locking shaft 5 is larger than the width of the locking head 53 but smaller than the length of the locking head 53. Since the lock head 53 is considered to simply enter the rectangular lock slot 71 and the top surface of the lock head 53 is formed to be in contact with both sides of the bottom surface of the lock slot 71, a situation may occur in which the lock head 53 slides along the length direction of the lock slot 71, resulting in unstable locking; therefore, the arc-shaped slots 72 are additionally formed at both sides of the locking slot 71 to match the fact that the diameter of the locking shaft 5 is larger than the width of the locking head 53 but smaller than the length of the locking head 53, and the locking shaft 5 passes through the locking slot 71 and rotates by 90 ° so that both ends of the locking head 53 in the length direction are contacted with the outer sides of the arc-shaped slots 72, thereby restricting the possible shaking of the locking shaft 5 in the locked state.

In the initial state, the locking shaft 5 and the locking head 53 pass through the locking slot 71, after the locking head 53 passes through the locking slot 71, the locking head 53 rotates 90 ° to enable the top surface of the locking head 53 to correspond to the arc slot 72, and under the interaction of the locking shaft 5 and the two arc slots 72, the locking shaft 5 is prevented from moving along the length direction of the locking slot 71, and meanwhile, the locking head 53 is tightly attached to the locking plate 7 to form a locked tightening state.

According to the hand-turning screw disclosed by the invention, the locking rotating shaft 5 penetrates through the inside of the fixed shell 1, and the locking rotating shaft 5 can axially move in the fixed shell 1 along the axial direction of the locking rotating shaft 5 and can also rotate around the circumferential direction of the locking rotating shaft 5 in the fixed shell 1; that is, the lock shaft 5 and the fixed housing 1 are in a state capable of being displaced relatively freely. Since the locking head 53 at the lower end of the locking shaft 5 is a locking end for fixing the board card, the state of the locking shaft 5 needs to be adjusted in the whole operation process, so that the state position of the locking head 53 reaches a set position, and the locking function is conveniently completed. The locking mechanism is used as a mechanism capable of locking the position state of the locking rotary shaft 5 in the fixed housing 1, so that by operating the locking rotary shaft 5, after the locking head 53 reaches the locking position, the locking mechanism is used to complete the position fixing of the locking rotary shaft 5 in the fixed housing 1, wherein the movement of the locking rotary shaft 5 in the circumferential direction and the axial direction thereof is limited, thereby achieving a stable state of the locking head 53.

In the present specification, each embodiment is described in a progressive manner, and each embodiment focuses on the difference from other embodiments, and the same and similar parts between the embodiments are only required to be referred to each other.

The terms "upper", "lower", "outside", "inside", and the like in the description and in the claims of the present invention and in the above drawings, if any, are used for distinguishing between relative relationships in position and not necessarily for giving qualitative sense. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. The hand-turning screw comprises a fixed shell (1) and is characterized in that a locking rotating shaft (5) is rotationally arranged in the fixed shell (1), a locking mechanism is further arranged in the fixed shell (1), and the locking mechanism can fix the axial position of the locking rotating shaft (5) in the fixed shell (1); the lower end of the locking rotating shaft (5) is provided with a locking head (53).

2. A hand screw according to claim 1, characterized in that at least the outer surface of the stationary housing (1) is of plastic material.

3. A hand screw according to claim 1, characterized in that the fixed housing (1) is provided with a first shaft long hole (2) which can limit the radial movement of the locking shaft (5).

4. A hand-turning screw according to claim 3, characterized in that the lower part in the fixed housing (1) is provided with a second elongated spindle hole (3) which expands outwards in the radial direction of the first elongated spindle hole (2); the lower part of the locking rotating shaft (5) is provided with a rotating shaft boss (51) corresponding to the second rotating shaft long hole (3).

5. A hand operated screw as claimed in claim 4, wherein the locking means comprises one to two limit grooves (31) and a spindle snap-in point (52) cooperating with the limit grooves (31); the limiting groove (31) is arranged at the lower part of the inner wall of the fixed shell (1), and the rotating shaft clamping point (52) is arranged on the side wall of the locking rotating shaft (5).

6. A hand operated screw as claimed in claim 5, wherein the limit groove (31) is provided on the inner wall of the second shaft slot (3), and the shaft engaging point (52) is provided on the shaft boss (51).

7. A hand-turning screw according to claim 6, characterized in that the upper end of the locking shaft (5) is rotatably provided with an operating handle (6), and the locking shaft (5) between the operating handle (6) and the fixed housing (1) is sleeved with a compression spring (9); the inner wall of the second rotating shaft long hole (3) is also provided with a locking channel (32) which allows the rotating shaft clamping point (52) to pass through so as to enter the limiting groove (31).

8. A hand operated screw as claimed in claim 7, characterised in that a pressure plate (8) is provided on the locking shaft (5) between the compression spring (9) and the operating handle (6).

9. A turning screw according to claim 8, characterized in that the turning side of the operating handle (6) is provided with a guiding fillet.

10. The lock head fixing piece comprises a locking plate (7) for locking a locking head (53), wherein a rectangular locking slot hole (71) is formed in the locking plate (7), and the lock head fixing piece is characterized in that arc slot holes (72) which are outwards expanded are formed in two long side edges of the locking slot hole (71), and arc edges of the two arc slot holes (72) are matched with a locking rotating shaft (5); the width of the locking head (53) is smaller than the diameter of the locking rotating shaft (5).