Threaded connecting piece tightening tool

Abstract

The utility model relates to a threaded connecting piece tightening tool. The threaded connecting piece tightening tool comprises a handle part, a rod part, a connecting piece retaining part, a fixing mechanism and a locking mechanism, and is configured in the mode that when a threaded connecting piece is tightened, the locking mechanism locks the fixing mechanism, so that the fixing mechanism fixes the threaded connecting piece tightening tool in the third direction, and the threaded connecting piece tightening tool is locked in the second direction. Moreover, after the threaded connecting piece is tightened, the locking mechanism releases the fixing mechanism, so that the fixation of the fixing mechanism on the threaded connecting piece tightening tool in the third direction is relieved. According to the threaded connecting piece tightening tool, the threaded connecting piece located in a narrow space can be operated, and in addition, tightening operation can be easier, and labor is saved.

Description

TECHNICAL FIELD

[0001] The present application relates to a thread fastener tightening tool, and particularly to a thread fastener tightening tool for fixing one of a pair of thread fasteners when tightening the pair of thread fasteners. BACKGROUND

[0002] Conventionally, a tightening tool such as a screwdriver or a wrench for tightening a thread fastener is known. For example, when tightening a thread fastener such as a bolt and a nut, generally, the nut is held and fixed by a wrench, and the bolt is rotated by a screwdriver or another wrench, thereby performing a tightening operation.

[0003] However, for example, when performing an assembly operation of a transmission or the like of a vehicle, since an operation space is narrow, there is a problem that an operator cannot insert a hand holding a wrench into the space. In addition, depending on the strength of the operator, a required tightening force, or the like, there is a problem that the operator cannot stably hold and fix the nut by the wrench. SUMMARY

[0004] The present application has been made in view of the above-described problems of the related art. It is an object of the present application to provide a thread fastener tightening tool.

[0005] According to an aspect of the present application, there is provided a thread fastener tightening tool. The thread fastener tightening tool includes a handle portion, a rod portion having a straight rod portion and a bent portion and being formed continuously with the handle portion, a fastener holding portion formed at a distal end of the bent portion of the rod portion and having an opening portion opened toward a second direction perpendicular to a first direction in which the rod portion extends, for holding a thread fastener to be tightened, a fixing mechanism for fixing the thread fastener tightening tool in a third direction perpendicular to the first and second directions, and a locking mechanism for locking or releasing the fixing mechanism, the thread fastener tightening tool being configured such that, when tightening a thread fastener, the locking mechanism locks the fixing mechanism, thereby fixing the thread fastener tightening tool in the third direction by the fixing mechanism, and, when the tightening of the thread fastener is completed, the locking mechanism releases the fixing mechanism, thereby releasing the fixing of the thread fastener tightening tool in the third direction by the fixing mechanism.

[0006] According to the threaded connection tightening tool described above, the fixing mechanism can further include a main body, a pressing pin including a pressing pin head and a pressing pin shaft, the pressing pin being axially movable relative to the main body, a pressing pin spring being sleeved on the pressing pin shaft, a pressing portion being installed on an end of the pressing pin shaft, and a pressing operation portion being configured to axially move the pressing pin.

[0007] According to the threaded connection tightening tool described above, the pressing pin spring can be a compression coil spring, and the pressing portion can be elastically forced in a direction away from the main body.

[0008] According to the threaded connection tightening tool described above, the pressing operation portion can include a base portion being fixed to the main body, an arm portion being radially extended from the base portion, and a C-shaped boss portion being arranged on a side of the base portion opposite to a side facing the main body.

[0009] According to the threaded connection tightening tool described above, the pressing operation portion can be rotatably arranged on the main body, a recess can be arranged on a surface of the base portion facing the main body, the pressing operation portion can be arranged to move the pressing pin head out of or into the recess by rotating relative to the main body, so as to tighten or loosen the pressing portion via the pressing pin, and the fixing mechanism can be fixed to the threaded connection tightening tool in the third direction by the pressing portion being tightened.

[0010] According to the threaded connection tightening tool described above, the recess can be formed as a smooth and continuous concave surface.

[0011] According to the threaded connection tightening tool described above, an opening of the recess on the surface of the base portion facing the main body can be an oblong shape.

[0012] According to the threaded connection tightening tool described above, the fixing mechanism can be provided with two or more pressing pins, and one pressing pin spring can be arranged corresponding to each pressing pin.

[0013] According to the threaded connection tightening tool described above, the fixing mechanism can be arranged on the straight shaft of the rod portion.

[0014] According to the thread fastening tool described above, the locking mechanism can include a housing fixed to the rod portion, a locking pin disposed in the housing and movable in the axial direction between a locked position and a released position, and a locking pin spring configured to apply an elastic force to the locking pin in a direction in which the locking pin protrudes from the housing.

[0015] According to the thread fastening tool described above, the locking pin can include a pin head portion, a pin rod portion, and a stepped portion connecting the pin head portion and the pin rod portion, the stepped portion having a larger diameter than the pin rod portion, and the locking pin spring can be fitted to the pin rod portion.

[0016] According to the thread fastening tool described above, the C-shaped boss portion of the pressing operation portion can have a first end surface and a second end surface, the first end surface being in contact with an end of the pin head portion of the locking pin at all times, so that the locking pin can be moved between the locked position and the released position by the first end surface of the C-shaped boss portion when the pressing operation portion is rotated.

[0017] According to the thread fastening tool described above, the C-shaped boss portion can be configured such that the second end surface abuts against a side surface of a portion of the pin head portion (42a) of the locking pin (42) that protrudes from the housing (41).

[0018] According to the thread fastening tool described above, the pressing operation portion can be configured such that, in a fixed state in which the fixing mechanism fixes the thread fastening tool by pressing the pressing portion with the pressing pin, the locking pin is moved to the locked position by the C-shaped boss portion, and the fixed state of the fixing mechanism is locked.

[0019] According to the thread fastening tool described above, the pressing operation portion can be configured such that, by moving the locking pin to the released position with the locking pin spring, the pressing of the pressing portion by the pressing pin is released, and the fixed state of the fixing mechanism is released.

[0020] The threaded connection tightening tool according to the present application, by being equipped with a rod portion including a straight rod portion and a bent portion, can operate the threaded connection in a narrow space in the case of assembling, for example, a transmission of a vehicle, and by being equipped with a fixing mechanism and a locking mechanism, can lock the fixing mechanism in a fixed state using the locking mechanism, and can provide a force for holding and fixing the threaded connection using the fixing mechanism, so that the operator can hold the threaded connection tightening tool stably without exerting force (or even without the operator), and the tightening work can be made easier and less laborious. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a schematic perspective view of a threaded connection tightening tool according to an embodiment of the present application.

[0022] Figure 2 is a schematic front view of a threaded connection tightening tool according to an embodiment of the present application.

[0023] Figure 3 is a schematic sectional view of a B-B section of the threaded connection tightening tool shown in Figure 2

[0024] Figure 4 is a schematic sectional view of a main body portion of the fixing mechanism of the threaded connection tightening tool according to an embodiment of the present application.

[0025] Figure 5 is a schematic sectional view of a C-C section of the threaded connection tightening tool shown in Figure 2

[0026] Figure 6 is a schematic view showing a pressing operation portion in the threaded connection tightening tool according to an embodiment of the present application, wherein Figure 6 (a) of FIG. 6 is a plan view of the pressing operation portion, Figure 6 (b) of FIG. 6 is a front view of the pressing operation portion, Figure 6 (c) of FIG. 6 is a bottom view of the pressing operation portion, Figure 6 (d) of FIG. 6 is Figure 6 a sectional view of a F-F section in (b) of FIG. 6.

[0027] BRIEF DESCRIPTION OF DRAWINGS

[0028] 100 threaded connection tightening tool

[0029] 1 handle portion

[0030] 2 rod portion

[0031] 2a straight rod portion

[0032] 2b bent portion​​

[0033] 3 connection piece holding portion

[0034] 3a opening portion

[0035] 3b tooth

[0036] 4 locking mechanism

[0037] 41 housing

[0038] 42 locking pin

[0039] 42a pin head portion

[0040] 42b stepped portion

[0041] 42c pin rod portion

[0042] 43 locking pin spring

[0043] 5 fixing mechanism

[0044] 6 main body portion

[0045] 6a mounting groove

[0046] 6b pin hole

[0047] 6b1 large diameter portion

[0048] 6b2 small diameter portion

[0049] 6b3 spring accommodating portion

[0050] 6c boss portion

[0051] 6d threaded portion

[0052] 7 pressing portion

[0053] 8 pressing operation portion

[0054] 8a arm portion

[0055] 8b C-shaped boss portion

[0056] 8b1 first end surface

[0057] 8b2 second end surface

[0058] 8c base portion

[0059] 8d fitting hole

[0060] 8e, 8e recessed portion

[0061] 9, 9 pressing pin

[0062] 9a, 9a pressing pin head portion

[0063] 9b, 9b compression pin rod portion

[0064] 10, 10 compression pin spring

[0065] 11 assembly nut

[0066] 12, 12 screw DETAILED DESCRIPTION

[0067] The present disclosure is described in detail below. In the following passages, different aspects of embodiments are defined in more detail. Each aspect so defined can be combined with any other aspect or aspects unless clearly indicated to the contrary. In particular, any feature indicated as being preferred or advantageous can be supplemented by any other feature or features indicated as being preferred or advantageous.

[0068] The terms "first", "second", and the like in the present disclosure are merely intended to facilitate description and to distinguish different constituent components with the same name, and do not indicate or imply precedence or sequence or a primary and a secondary relationship.

[0069] In addition, when a component is referred to as being "on" another component, it can be directly on the other component, or can be indirectly on the other component with one or more intervening components therebetween. Also, when a component is referred to as being "connected to" another component, it can be directly connected to the other component, or can be indirectly connected to the other component with one or more intervening components therebetween. Hereinafter, like reference numerals denote like components.

[0070] The descriptions of the orientation or positional relationship such as "upper", "lower", "top", "bottom", "front", "rear", "inner", and "outer" in the present disclosure are merely intended to facilitate the description of the present disclosure and are not intended to indicate or imply that a particular orientation, configuration, and operation of the device are required, and thus cannot be understood as limiting the scope of protection of the present application.

[0071] Hereinafter, the embodiments of the present application will be described in detail with reference to the accompanying drawings.

[0072] First, referring to Figure 1 and Figure 2 , the overall structure of the screw tightening tool 100 according to the embodiments of the present application will be described. Among them, Figure 1 is a schematic perspective view of the screw tightening tool 100 according to the embodiments of the present application; Figure 2 is a schematic front view of the screw tightening tool 100 according to the embodiments of the present application.

[0073] As Figure 1 and Figure 2As shown, the threaded connection tightening tool 100 of the present application includes a handle portion 1, a stem portion 2, a connection holding portion 3, a locking mechanism 4, and a fixing mechanism 5. The handle portion 1 is a portion to be gripped by an operator who performs a tightening operation, for example, as shown in Figure 1 and Figure 2 , an ergonomic wave-shaped curved portion that is easy for an operator to grip can be formed.

[0074] The stem portion 2 is a portion that extends from the handle portion 1, as shown in Figure 1 and Figure 2 , a straight stem portion 2a that extends in a straight line is formed, one end of the straight stem portion 2a is formed continuously with the handle portion 1, and at the other end of the straight stem portion 2a, a curved portion 2b that is continuous with the straight stem portion 2a is formed. In the following description, the direction in which the straight stem portion 2a of the handle portion 1 and the stem portion 2 extends will be referred to as a first direction.

[0075] At the end of the curved portion 2b, the connection holding portion 3 for holding a threaded connection is provided. The connection holding portion 3 has an opening portion 3a. The opening portion 3a of the connection holding portion 3 opens toward a second direction that is perpendicular to the first direction described above (i.e., in Figure 2 , it opens toward a direction perpendicular to the plane of the paper). In Figure 1 and Figure 2 , the opening portion 3a is formed in a substantially circular shape, but is not limited thereto, and can be formed in a hexagonal shape or any other shape, for example. When the threaded connection is tightened by the threaded connection tightening tool 100, the threaded connection (not shown in the figures, such as the head of a bolt or a nut) is held by fitting the opening portion 3a of the connection holding portion 3 over the outside of the threaded connection. In addition, preferably, a plurality of teeth 3b are provided on the opening portion 3a of the connection holding portion 3 (i.e., on the inner peripheral wall of the connection holding portion 3). By providing the plurality of teeth 3b on the opening portion 3a, the threaded connection can be held more reliably by the plurality of teeth 3b.

[0076] In Figure 1 and Figure 2 , the fixing mechanism 5 is provided at a position of the straight stem portion 2a that is close to the handle portion 1. However, it should be understood that the fixing mechanism 5 does not necessarily have to be provided at the straight stem portion 2a, and it is completely acceptable to provide the fixing mechanism 5 at the handle portion 1, for example. The fixing mechanism 5 is configured to fix the threaded connection tightening tool 100 in a third direction that is perpendicular to the first direction and the second direction described above (i.e., the up-down direction in Figure 2 ) when the threaded connection is tightened by the threaded connection tightening tool 100. The specific structure of the fixing mechanism 5 will be described in detail later.

[0077] As shown in Figure 1 andFigure 2 As shown, a locking mechanism 4 for locking or releasing the fixing mechanism 5 is also provided in the straight rod portion 2a of the rod portion 2. When the threaded connector tightening fixture 100 tightens the threaded connector, the locking mechanism 4 locks the fixing mechanism 5 in a fixed state where the fixing mechanism 5 fixes the threaded connector tightening fixture in the third direction. After the threaded connector tightening fixture 100 finishes tightening the threaded connector, the locking mechanism 4 releases the lock on the fixing mechanism 5, thereby releasing the fixing mechanism 5 from fixing the threaded connector tightening fixture 100 in the third direction. The specific structure of the locking mechanism 4 will be described in detail later.

[0078] Below, refer to Figures 3 to 6 The specific structures of the fixing mechanism 5 and the locking mechanism 4 are described in detail. Among them, Figure 3 yes Figure 2 A schematic cross-sectional view of the BB section of the threaded fastener clamping fixture shown in the figure; Figure 4 This is a schematic cross-sectional view of the main body 6 of the fixing mechanism 5 of the threaded fastener tightening fixture 100; Figure 5 yes Figure 2 The schematic cross-sectional view of the CC section of the threaded fastening fixture shown is a diagram used to illustrate the structure and interaction of the locking mechanism 4 and the fixing mechanism 5. Figure 6 (a) is a top view of the clamping operation unit 8. Figure 6 (b) is a front view of the clamping operation unit 8. Figure 6 (c) is a bottom view of the clamping operation unit 8. Figure 6 (d) is Figure 6 The sectional view of section FF in (b).

[0079] As previously explained, the fixing mechanism 5 is preferably installed on the straight rod portion 2a of the rod portion 2. Figure 1 , 2 As shown in Figure 3, the fixing mechanism 5 includes a main body 6, which is mounted on the straight rod 2a. Figure 4 As shown, the main body 6 has a mounting groove 6a, a pin hole 6b, a boss 6c, and a threaded portion 6d. The depth of the mounting groove 6a is approximately the same as the height of the straight rod portion 2a. The fixing mechanism 5 is mounted on the rod portion 2 by inserting the straight rod portion 2a into the mounting groove 6a.

[0080] The boss 6c is formed on the side opposite to the mounting groove 6a. Figure 4 (on the side facing upwards), and from the boss portion 6c towards Figure 4 A threaded portion 6d is formed protruding from the upper part of the boss, and the diameter of the threaded portion 6d is smaller than the diameter of the boss portion 6c. (See reference) Figure 1 , 2The pressing operation portion 8 is rotatably fitted to the boss portion 6c by fitting the fitting hole 8d formed in the pressing operation portion 8 to the boss portion 6c, and by screwing the fitting nut 11 to the threaded portion 6d, and the pressing operation portion 8 is rotatably fitted to the main body portion 6.

[0081] In Figure 3 and Figure 4 the example shown, two pin holes 6b are formed on both sides of the mounting groove 6a, so that when the fixing mechanism 5 is mounted to the rod portion 2, the two pin holes 6b are respectively located on both sides of the straight rod portion 2a. Needless to say, in the threaded connection piece tightening tool 100 of the present application, the number of pin holes 6b is not limited to two, and only one pin hole can be provided, or more than two pin holes can be provided, as long as the number of pin holes is consistent with the number of pressing pins to be mounted.

[0082] As shown in Figure 4 , each pin hole 6b is formed with a large diameter portion 6b1, a small diameter portion 6b2, and a spring receiving portion 6b3. As shown in Figure 3 , in the case where the pressing pin 9 is mounted to the pin hole 6b, the pressing pin head portion 9a of the pressing pin 9 is received in the large diameter portion 6b1, the pressing pin rod portion 9b is extended to be provided in the small diameter portion 6b2 and the spring receiving portion 6b3, and protrudes from the pin hole 6b (downward in Figure 3 ). At the end of the pressing pin 9 protruding from the pin hole 6b, an internally threaded hole is formed. By screwing the screw 12 to the internally threaded hole, the pressing portion 7 is mounted to the end of the pressing pin 9 protruding from the pin hole 6b. And in the spring receiving portion 6b3, the pressing pin spring 10 is received. As shown in Figure 3 , the pressing pin spring 10 is fitted to the outer periphery of the pressing pin rod portion 9b, and the pressing portion 7 is elastically urged in the direction away from the main body portion 6.

[0083] As can be seen from Figure 3 , the height of the large diameter portion 6b1 of the pin hole 6b is formed to be greater than the height of the pressing pin head portion 9a of the pressing pin 9, so that the pressing pin 9 can move in the axial direction of the pin hole (i.e., the up and down direction in Figure 3 or Figure 4 ) within the pin hole by an amount corresponding to the height difference between the large diameter portion 6b1 and the pressing pin head portion 9a.

[0084] As Figure 6As shown in (a), (b), (c), and (d), the clamping operation part 8 has: a base 8c formed in a generally cylindrical shape; an arm 8a extending radially outward from the base 8c; and a C-shaped boss 8b protruding axially from the base 8c and formed in a generally C-shape. A generally circular mounting hole 8d is formed at the center of the generally cylindrical base 8c, penetrating the base 8c. As described above, the clamping operation part 8 is rotatably fitted onto the outer periphery of the boss 6c of the main body part 6 through the mounting hole 8d. The C-shaped boss 8b has a first end face 8b1 and a second end face 8b2 formed at both ends of the C-shape.

[0085] On the outer periphery of the mounting hole 8d, a recess 8e is formed on the surface of the base 8c facing the clamping pin 9 for moving the clamping pin 9 axially within the pin hole 6b. For example... Figure 6 As shown in (c), the recess 8e opens on the surface of the base 8c facing the clamping pin 9, preferably formed as an elongated oval extending in the circumferential direction of the base 8c. More preferably, the two long sides of the opening of the recess 8e extending in the circumferential direction of the base 8c are formed with curved portions that bend in a generally arc shape with the center of the base 8c as the center. Furthermore, as... Figure 6 As shown in (d), the recess 8e is in Figure 6 In section (b), the FF section is shaped to substantially match the shape of the end of the clamping pin head 9a. Furthermore, the recess 8e is formed such that its depth increases towards the center and decreases towards the periphery. By forming the recess 8e in the shape described above, it is possible for the recess 8e to smoothly engage with the clamping pin head 9a, thereby allowing the clamping pin head 9a to move within the pin hole 6b using the recess 8e. Figure 6 In the example shown, two recesses 8e are formed at the base 8c of the clamping operation part 8. However, this application is not limited to this, as long as the number of recesses 8e is consistent with the number of clamping pins 9 that need to be set.

[0086] like Figure 1 , Figure 3 and Figure 5 As shown, the locking mechanism 4 is disposed on one side of the straight rod portion 2a of the rod portion 2. The locking mechanism 4 includes a housing 41 fixedly mounted on one side of the straight rod portion 2a, and a locking pin 42 and a locking pin spring 43 disposed within the housing 41. The housing 41 has an opening facing the mounting and fixing mechanism 5. The locking pin 42 includes a pin head 42a, a stepped portion 42b, and a pin rod portion 42c. Figure 1 and Figure 5As shown, the pin head 42a protrudes from the opening of the housing 41 and abuts against the first end face 8b1 of the C-shaped boss 8b of the clamping operation part 8. The pin shank 42c is housed inside the housing 41, and its diameter is smaller than that of the pin head 42a. A stepped portion 42b is formed between the pin head 42a and the pin shank 42c, and its diameter is smaller than that of the pin head 42a but larger than that of the pin shank 42c. A locking pin spring 43 is fitted around the outer periphery of the pin shank 42c and is located axially between the inner wall surface of the housing 41 on the side opposite to the opening and the end face of the stepped portion 42b. The locking pin spring 43 is a compression spring that applies a force to the locking pin 42 in a direction that causes the pin head 42a of the locking pin 42 to extend outward from the housing 41. In addition, the second end face 8b2 of the C-shaped boss portion 8b of the pressing operation portion 8 abuts against the side of the portion of the pin head 42a of the locking pin 42 that extends out of the housing 41 in a transverse direction perpendicular to the axial direction of the locking pin 42.

[0087] The operation and working principle of the threaded fastener tightening fixture according to this application will be explained below.

[0088] like Figure 5 As shown, when the threaded fastening fixture 100 is not in use, that is, when the clamping part 7 of the fixing mechanism 5 is not clamped by the clamping pin 9 and the locking mechanism 4 does not lock the fixing mechanism 5, the locking pin 42 of the locking mechanism 4, by means of the elastic force applied by the locking pin spring 43, pushes the first end face 8b1 of the C-shaped boss 8b of the clamping operation part 8, thereby causing the arm 8a of the clamping operation part 8 to be positioned at an angle to the straight rod 2a and the handle 1. At this time, the base 8c of the clamping operation part 8 is positioned such that the clamping pin head 9a of the clamping pin 9 enters the recess 8e formed on the base 8c. In this case, the locking mechanism 4 is in a released state (also called a non-locked state), and the clamping part 7 of the fixing mechanism 5 is in a state where it is released by the clamping pin 9; that is, the fixing mechanism 5 is in a non-fixed state.

[0089] When tightening of threaded fasteners is required, particularly when tightening of threaded fasteners located in confined spaces, such as for assembling a vehicle's transmission, the operator holds the handle 1 of the threaded fastener tightening fixture 100 and inserts the rod 2 into the confined space. Then, the opening 3a of the fastener holding portion 3, located at the end of the bent portion 2b of the rod 2, is nested into the outer periphery of the threaded fastener (e.g., a nut), and the threaded fastener is held in place by the teeth 3b formed on the inner periphery of the opening 3a.

[0090] In the above-described state, the operator rotates the pressing operation portion 8 so that the pressing pin head portion 9a of the pressing pin 9 located in the recess 8e is smoothly moved along the curved surface of the recess 8e and finally moved out of the recess 8e. By moving the pressing pin head portion 9a out of the recess 8e, the pressing pin 9 pushes the pressing portion 7 against a fixed surface, such as a surface formed on a mounted object such as a transmission case, a surface of a workbench, or a floor surface, in the third direction (i.e., in the downward direction in Figure 3 the above-described state, the fixed mechanism 5 firmly fixes the threaded connection tightening tool 100 by means of the force for holding the threaded connection member such as a nut, which is generated in the circumferential direction of the opening portion 3a, and the pressing force of the pressing portion 7 against the fixed surface, and makes the threaded connection member such as a nut held by the opening portion 3a not rotate.

[0091] At the same time, the pressing operation portion 8 is rotated so that the arm portion 8a of the pressing operation portion 8 is rotated from a position at an angle to the straight rod portion 2a and the handle portion 1 to a position substantially parallel to the straight rod portion 2a and the handle portion 1. Thus, as can be understood from Figure 1 and Figure 5 the fixed mechanism 5 is locked in the fixed state, i.e., in the state where the pressing portion 7 is pressed against the fixed surface by the pressing pin 9, by the pin head portion 42a of the locking pin 42.

[0092] At this time, since the fixed mechanism 5 is locked in the fixed state, the operator does not need to forcibly hold the threaded connection tightening tool 100 or even need not hold the threaded connection tightening tool 100, but can hold the threaded connection member to be tightened in a state where the threaded connection member does not rotate by the threaded connection member holding portion 3 of the threaded connection tightening tool 100 by means of the fixing force of the pressing portion 7 of the fixed mechanism 5 against the fixed surface. In this case, by rotating another threaded connection member (e.g., a screw) that matches the threaded connection member (e.g., a nut), the tightening work of the threaded connection member can be easily performed in a narrow space.

[0093] Further, after the tightening operation of the threaded connection is completed, the tightening operation portion 8 is only needed to be rotated with a small force and the arm portion 8a is returned to the position shown in Fig. 1, i.e. the position at a certain angle relative to the straight rod portion 2a and the handle portion 1, so as to release the locking of the locking pin 42 of the locking mechanism 4 to the fixing mechanism 5, and at the same time, through the rotation of the tightening operation portion 8, the tightening pin head 9a of the tightening pin 9 re-enters the recess 8e, so as to release the tightening of the tightening pin 9 to the tightening portion 7, thereby releasing the fixing of the fixing mechanism 5 to the threaded connection tightening tool 100. Figure 5

[0094] The structure and working principle of the threaded connection tightening tool 100 according to the present application are described above. The threaded connection tightening tool 100 according to the present application, by having the structure as described above, can operate the threaded connection located in a narrow space, and through the locking of the fixing mechanism 5 in the fixed state by the locking mechanism 4, the force for holding and fixing the threaded connection is provided by the fixing mechanism 5, so that the operator can stably hold the threaded connection tightening tool and hold the threaded connection to be tightened in a non-rotatable state without exerting a large force (or even without exerting force), thereby making the tightening operation easier and labor-saving.

[0095] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit the same; although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions recorded in the above embodiments can still be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be covered in the scope of the claims and the description of the present application. In particular, as long as there is no structural conflict, each technical feature mentioned in each embodiment can be combined in any manner. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.​

Claims

1. A threaded connection makeup tool, characterized in that, The screw tightening tool comprises: a handle portion (1); a rod portion (2) having a straight rod portion (2a) and a bent portion (2b) and being formed continuously with the handle portion (1); a connector holding portion (3) formed at a distal end of the bent portion (2b) of the rod portion (2) and having an opening portion (3a) opened in a second direction perpendicular to a first direction in which the straight rod portion (2a) of the rod portion (2) extends, for holding a threaded connector to be tightened; a fixing mechanism (5) for fixing the threaded connector tightening tool in a third direction perpendicular to the first and second directions; and a locking mechanism (4) for locking or releasing the fixing mechanism (5), wherein the threaded connector tightening tool is configured such that, when tightening the threaded connector, the locking mechanism (4) locks the fixing mechanism (5) so that the fixing mechanism (5) fixes the threaded connector tightening tool in the third direction, and, after completion of the tightening of the threaded connector, the locking mechanism (4) releases the fixing mechanism (5) so that the fixing mechanism (5) releases the fixing of the threaded connector tightening tool in the third direction.

2. A make-up tool as claimed in claim 1, characterised in that, The fixing mechanism (5) has a main body portion (6), a press-in pin (9) including a press-in pin head portion (9a) and a press-in pin rod portion (9b) and being disposed so as to be movable in an axial direction with respect to the main body portion (6), a press-in pin spring (10) fitted to the press-in pin rod portion (9b), a press-in portion (7) attached to an end of the press-in pin rod portion (9b), and a press-in operation portion (8) configured to move the press-in pin (9) in the axial direction.

3. A make-up tool as claimed in claim 2, wherein The press-in pin spring (10) is a compression coil spring that exerts an elastic force on the press-in portion (7) in a direction in which the press-in portion (7) is distanced from the main body portion (6).

4. A make-up tool as claimed in claim 3, wherein The press-in operation portion (8) includes a base portion (8c) fixed to the main body portion (6), an arm portion (8a) disposed so as to extend in a radial direction from the base portion (8c), and a C-shaped boss portion (8b) disposed on a side of the base portion (8c) opposite a side facing the main body portion (6).

5. A make-up tool as claimed in claim 4, wherein The press-in operation portion (8) is rotatably disposed on the main body portion (6), a recessed portion (8e) is provided on a surface of the side of the base portion (8c) facing the main body portion (6), The pressing operation portion (8) is configured to press or release the pressing portion (7) via the pressing pin (9) by rotating relative to the main body portion (6) so that the pressing pin head (9a) of the pressing pin (9) moves out of or into the recess (8e), and the fixing mechanism (5) is fixed to the threaded connection tightening tool in the third direction by the pressing portion (7) being pressed.

6. A make-up tool as claimed in claim 5, wherein The recess (8e) is formed as a smoothly continuous concave curved surface.

7. A make-up tool as claimed in claim 6, wherein The opening of the recess (8e) on the surface of the side of the base (8c) facing the main body portion (6) is oblong.

8. A make-up tool as claimed in any one of claims 2 to 7, wherein, The fixing mechanism (5) is provided with two or more pressing pins (9), and one pressing pin spring (10) is provided corresponding to each pressing pin (9).

9. A make-up tool as claimed in any one of claims 2 to 7, wherein, The fixing mechanism (5) is provided on the straight rod portion (2a) of the rod portion (2).

10. A make-up tool as claimed in any one of claims 4 to 7, wherein, The locking mechanism (4) includes a housing (41) fixed to the rod portion (2), a locking pin (42) provided in the housing (41) and movable in the axial direction between a locked position for locking the fixing mechanism (5) and a released position for releasing the fixing mechanism (5), and a locking pin spring (43) configured to apply an elastic force to the locking pin (42) in a direction in which the locking pin (42) protrudes from the housing (41).

11. A make-up tool as claimed in claim 10, wherein, The locking pin (42) includes a pin head (42a), a pin rod portion (42c), and a stepped portion (42b) connecting the pin head (42a) and the pin rod portion (42c), the diameter of the stepped portion (42b) being larger than the diameter of the pin rod portion (42c), and the locking pin spring (43) is fitted on the pin rod portion (42c).

12. A make-up tool as claimed in claim 11, characterised in that, The C-shaped boss portion (8b) of the pressing operation portion (8) has a first end surface (8b1) and a second end surface (8b2), the first end surface (8b1) is always in contact with the end of the pin head (42a) of the locking pin (42), so that when the pressing operation portion (8) is rotated, the locking pin (42) can be moved between the locked position and the released position by the first end surface (8b1) of the C-shaped boss portion (8b) and the locking pin spring (43).

13. A make-up tool as claimed in claim 12, wherein, The C-shaped boss portion (8b) is configured such that the second end surface (8b2) abuts against the side surface of the portion of the pin head (42a) of the locking pin (42) protruding from the housing (41).

14. A make-up tool as claimed in claim 13, wherein, The pressing operation portion (8) is configured such that, in a fixed state in which the fixing mechanism (5) is fixed to the threaded connection tightening tool by the pressing portion (7) being pressed by the pressing pin (9), the locking pin (42) is moved to the locked position by the first end surface (8b1) of the C-shaped boss portion (8b), and the fixed state of the fixing mechanism (5) is locked.

15. A make-up tool as claimed in claim 14, wherein, The pressing operation portion (8) is configured such that, by moving the locking pin (42) to the release position using the locking pin spring (43), the pressing of the pressing portion (7) by the pressing pin (9) is released, and the fixing state of the fixing mechanism (5) is released.

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