CN115771117A - Sleeve for tool - Google Patents
Sleeve for tool Download PDFInfo
- Publication number
- CN115771117A CN115771117A CN202211080553.3A CN202211080553A CN115771117A CN 115771117 A CN115771117 A CN 115771117A CN 202211080553 A CN202211080553 A CN 202211080553A CN 115771117 A CN115771117 A CN 115771117A
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- China
- Prior art keywords
- sleeve
- peripheral surface
- holding portion
- axial direction
- holding
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- Insertion Pins And Rivets (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
- Cutting Tools, Boring Holders, And Turrets (AREA)
- Eye Examination Apparatus (AREA)
- Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)
Abstract
Provided is a tool socket which can be easily assembled. The tool socket is provided with: the locking member includes an outer member, an inner member, a biasing member that biases the inner member in one axial direction in the outer member, and a locking portion that is held by the inner member. The outer member has an outer sleeve portion, a housing portion that houses the urging member, and a protruding portion that protrudes inward between the outer sleeve portion and the housing portion. The inner member has an inner sleeve portion and a holding portion extending from the inner sleeve portion to the receiving portion through an inner side of the protruding portion. The holding portion has a through hole formed at the other side in the axial direction than the protruding portion. The locking part is provided with: an insertion portion inserted into the through hole of the holding portion; and an elastic portion that supports the insertion portion from an inner peripheral surface side of the holding portion such that a part of the insertion portion protrudes outward from an outer peripheral surface of the holding portion.
Description
Technical Field
The present invention relates to a tool sleeve.
Background
Conventionally, electric tools such as impact screwdrivers and impact wrenches have been used to fasten bolts and nuts. When fastening a bolt or the like using an electric power tool, various tool sockets are attached to the electric power tool. As such a socket, a socket having two holding portions (portions for holding bolts or the like) having different diameters is known.
For example, a sleeve disclosed in patent document 1 includes: an outer member having a 1 st holding portion for holding a nut having a large diameter; and an inner member having a 2 nd holding portion for holding a nut having a small diameter. The 1 st holding portion is provided at an end portion on one side in the axial direction of the outer member. The end portion on the other side in the axial direction of the outer member is configured to be capable of being inserted by a drill. The outer member is attached to an electric tool such as a hammer driver via the bit.
The inner member is housed in the outer member so as to be movable in the axial direction of the outer member. An urging member is provided between the other end portion of the outer member and the inner member. The urging member urges the inner member toward one side of the outer member in the axial direction. In a state where no force is applied to the inner member from the outside, the 2 nd holding portion of the inner member is positioned inside the 1 st holding portion of the outer member by the urging member.
When a nut having a small diameter is fastened using the socket of patent document 1, the nut is held by the 2 nd holding portion. On the other hand, when fastening a nut having a large diameter, the inner member is press-fitted to the other side of the outer member in the axial direction to expose the inner peripheral surface of the 1 st holding portion, and the nut is held by the 1 st holding portion.
In this way, in the sleeve of patent document 1, by adjusting the position of the inner member with respect to the outer member, it is possible to fasten two nuts having different diameters. In this case, when the two nuts having different diameters are fastened, the work of detaching and attaching the sleeve to the electric power tool can be saved, and therefore, the work efficiency can be improved.
Documents of the prior art
Patent literature
Patent document 1: japanese patent laid-open publication No. 2019-198959
Disclosure of Invention
Problems to be solved by the invention
In the sleeve including the outer member and the inner member as described above, it is necessary to prevent the inner member from coming off the outer member. Therefore, in the sleeve of patent document 1, the annular member is fitted into a recess provided in the inner peripheral surface of the outer member. Further, a bulging portion that protrudes toward the outer member side is provided on the outer peripheral surface of the distal end portion of the inner member. According to such a configuration, the bulging portion of the inner member is locked to the annular member, whereby the inner member can be prevented from falling off from the outer member.
However, in the sleeve of patent document 1, when the inner member is fitted into the outer member, it is necessary to expand the annular member by the distal end portion of the inner member while the annular member is fitted into the recessed portion of the inner peripheral surface of the outer member, and to pass the inner member through the annular member. However, it is not easy to fit the annular member into the recess of the inner peripheral surface of the outer member, and it takes time.
Accordingly, an object of the present invention is to provide a tool socket that can be easily assembled.
Means for solving the problems
The key point of the present invention is the following sleeve for a tool.
(1) A sleeve for a tool, wherein,
the tool socket includes:
a cylindrical outer member having an end surface on one side in an axial direction thereof opened;
a cylindrical inner member inserted into the one end portion of the outer member so as to be movable in the axial direction;
an urging member that is provided inside the outer member at a position closer to the other side in the axial direction than the inner member and that urges the inner member to the one side; and
a retaining portion held by the inner member within the outer member,
the lateral member has: a hollow outer sleeve portion provided at the one end portion; a hollow housing portion that houses the biasing member at a position on the other side of the outer sleeve portion; and a protruding portion that is provided between the outer sleeve portion and the housing portion in the axial direction and protrudes inward with respect to an inner peripheral surface of the outer sleeve portion and an inner peripheral surface of the housing portion in a radial direction of the outer member,
the medial member has: a hollow inner sleeve portion positioned within the outer sleeve portion; and a cylindrical holding portion extending from the inner sleeve portion to the housing portion through an inner side of the protruding portion in the radial direction,
a through hole penetrating in a radial direction of the holding portion is formed in the holding portion on the other side than the protruding portion,
the locking part comprises: an insertion portion that is inserted into the through hole so as to be movable in a radial direction of the holding portion; and an elastic portion that supports the insertion portion from an inner peripheral surface side of the holding portion such that a part of the insertion portion protrudes outward from an outer peripheral surface of the holding portion in a radial direction of the holding portion, and such that the elastic portion is elastically deformed by being pressed inward in the radial direction of the holding portion by the insertion portion,
the portion of the insertion portion protruding outward from the outer peripheral surface is locked to the protruding portion of the outer member, thereby preventing the inner member from falling off from the one side of the outer member.
(2) The socket for a tool according to the above (1),
the elastic portion is curved in an arc shape along an inner peripheral surface of the holding portion, and is held by the holding portion on an inner peripheral surface side of the holding portion.
(3) The socket for a tool according to the above (1) or (2), wherein,
a groove for receiving the elastic portion is formed on an inner peripheral surface of the holding portion,
the through hole is formed to communicate the outer peripheral surface of the holding portion with the groove.
(4) The socket for a tool according to any one of the above (1) to (3),
the insertion portion and the elastic portion are formed of members independent of each other.
(5) The socket for a tool according to the above (4), wherein,
the insertion portion is constituted by a spherical member.
(6) The socket for a tool according to any one of the above (1) to (3),
the insertion portion and the elastic portion are integrally formed.
(7) The socket for a tool according to any one of the above (1) to (6),
the elastic portion has a letter C-shape or a ring-shape when viewed from the axial direction.
ADVANTAGEOUS EFFECTS OF INVENTION
According to the present invention, a tool sleeve can be easily assembled.
Drawings
Fig. 1 is a view showing a tool socket and an impact wrench to which the tool socket is attached according to an embodiment of the present invention.
Fig. 2 is a view showing a sleeve.
Fig. 3 is an exploded view of the sleeve.
Fig. 4 is a sectional view showing the lateral member and the medial member.
Fig. 5 is a view showing the elastic member.
Fig. 6 is a sectional view of the sleeve showing a state in which the inner member is pressed into the outer member.
Fig. 7 is a diagram for explaining an insertion method of inserting the inner member into the outer member.
Fig. 8 is a sectional view showing a sleeve according to another embodiment of the present invention.
Fig. 9 is a view showing the elastic member.
Fig. 10 is a view showing another example of the elastic member.
Fig. 11 is a diagram showing another example of the elastic member and a sleeve provided with the elastic member.
Fig. 12 is a sectional view showing a sleeve according to another embodiment of the present invention.
Fig. 13 is a sectional view showing a sleeve according to still another embodiment of the present invention.
Description of the reference numerals
10. 10a, 10b, 10c, a sleeve; 12. an outer member; 14. an inner member; 16. a force application member; 18. 18a, 18b, 18c, a locking part; 20. an outer sleeve portion; 20a, an inner peripheral surface of the outer sleeve portion; 24. a storage section; 24a, an inner peripheral surface of the housing portion; 26. a protrusion; 40. an inner sleeve portion; 42. a holding section; 42a, through holes; 42b, a groove; 42c, an inner peripheral surface of the holding portion; 42d, outer peripheral surface of the holding portion; 80. a spherical member (insertion portion); 82. 84, 84a, 84b, an elastic member (elastic portion); 86. a rod-shaped portion (insertion portion); 88. 88a, a curved portion (elastic portion).
Detailed Description
The tool socket according to the embodiment of the present invention is used by being attached to a known electric tool such as an impact wrench or an impact screwdriver. Fig. 1 is a view showing a tool socket and an impact wrench to which the tool socket is attached according to an embodiment of the present invention.
(impact wrench structure)
First, the impact wrench 100 will be explained. As shown in fig. 1, the impact wrench 100 has a main body portion 102 and a drive angle 104. Although not shown, a motor for driving and rotating the driving angle 104 is provided in the main body 102. The drive angle 104 has a prismatic shape. In addition, a through hole 104a is formed in the driving horn 104. A pin 200 (see fig. 2 (b) described later) for connecting the tool socket 10 to the driving angle 104 is inserted into the through hole 104a. The tool socket 10 connected to the driving angle 104 is rotated by the rotation of the driving angle 104. Since various known impact wrenches can be used as the impact wrench 100, detailed description of the impact wrench 100 will be omitted.
(Structure of Sleeve for tool)
Next, the tool socket 10 (hereinafter, simply referred to as socket 10) according to an embodiment of the present invention will be described in detail. Fig. 2 is a view showing the sleeve 10, fig. 2 (a) is a view showing an external appearance of the sleeve 10, and fig. 2 (b) is a cross-sectional view showing a portion b-b of fig. 2 (a). In addition, fig. 3 is an exploded view of the sleeve 10.
As shown in fig. 2 and 3, the sleeve 10 includes an outer member 12, an inner member 14, an urging member 16, and a locking portion 18. Note that, in fig. 2 and 3, and fig. 4, 6 to 8, and 11 to 13 described later, the axial direction of the outer member 12 is indicated by an arrow X. Hereinafter, the axial direction of the outer member 12 is referred to as an axial direction X.
Fig. 4 is a sectional view showing lateral member 12 and medial member 14. As shown in fig. 2 and 4, the outer member 12 has a hollow substantially cylindrical shape with one end surface and the other end surface opened in the axial direction X. The outer member 12 has an outer sleeve portion 20, a coupling portion 22, a receiving portion 24, and a protruding portion 26.
The outer sleeve portion 20 is provided at one end portion of the outer member 12 in the axial direction X. The outer sleeve portion 20 has an inner peripheral surface 20a, and the inner peripheral surface 20a has a polygonal shape in a cross section orthogonal to the axial direction X. In the present embodiment, a fastening member (bolt, nut, or the like) not shown can be held by the inner peripheral surface 20 a.
The coupling portion 22 is provided at the other end portion of the outer member 12 in the axial direction X. The coupling portion 22 has an insertion port 22a, a groove 22b, and a pair of through holes 22c. The insertion opening 22a is formed to open toward the other side of the outer member 12 in the axial direction X. In the present embodiment, the insertion port 22a has a rectangular cross section.
As shown in fig. 1, an O-ring 202 is inserted in the groove 22 b. As shown in fig. 1 and 2, when the socket 10 is attached to the impact wrench 100, the driving angle 104 of the impact wrench 100 is inserted into the insertion port 22a of the socket 10, and a part of the O-ring 202 is displaced from the groove 22b to expose the through-hole 22c. In this state, the pin 200 is inserted into the pair of through holes 22c of the socket 10 and the through hole 104a of the driving horn 104. Then, the part of the O-ring 202 is fitted into the groove 22b to close the through hole 22c. This prevents the pin 200 from falling off from the driving angle 104 and the socket 10, and couples the socket 10 and the impact wrench 100. When the socket 10 is removed from the impact wrench 100, the pin 200 may be removed by displacing a part of the O-ring 202 from the groove 22b to expose the through-hole 22c. This allows the coupling between the socket 10 and the driving angle 104 to be released, and the socket 10 to be detached from the impact wrench 100.
As shown in fig. 2 and 4, the housing portion 24 has a hollow shape and is provided on the other side of the outer sleeve portion 20 in the axial direction X. In the present embodiment, the housing portion 24 is provided between the outer sleeve portion 20 and the coupling portion 22 in the axial direction X. The housing 24 houses the biasing member 16.
The protruding portion 26 is provided between the outer sleeve portion 20 and the receiving portion 24 in the axial direction X. The protruding portion 26 is provided to protrude inward in the radial direction of the outer member 12 with respect to the inner peripheral surface 20a of the outer sleeve portion 20 and the inner peripheral surface 24a of the receiving portion 24. As shown in fig. 4, in the present embodiment, the inner peripheral surface of the protruding portion 26 has a tapered surface 26a, a cylindrical surface 26b, and a flange surface 26c provided in this order from one side to the other side in the axial direction X. The tapered surface 26a is formed so that the diameter gradually decreases toward the other side in the axial direction X. The cylindrical surface 26b is formed to extend from the tapered surface 26a to the other side in the axial direction X, and has a substantially uniform diameter. The flange surface 26c has an annular shape and is formed to extend radially outward of the outer member 12 from the cylindrical surface 26 b.
As shown in fig. 2, the inner member 14 is inserted into one end of the outer member 12 in the axial direction X. The inner member 14 is inserted into the outer member 12 so as to be movable in the axial direction X. As shown in fig. 2 and 4, the medial member 14 has an inner sleeve portion 40 and a retaining portion 42.
As shown in fig. 2, the inner sleeve portion 40 has a hollow shape, which is positioned within the outer sleeve portion 20. As shown in fig. 2 and 4, the inner sleeve portion 40 has an inner peripheral surface 40a, and the inner peripheral surface 40a has a polygonal shape in a cross section orthogonal to the axial direction X. In the present embodiment, a fastening member (bolt, nut, or the like) not shown can be held by the inner peripheral surface 40 a.
In the present embodiment, the length of the inner sleeve portion 40 is smaller than the length of the outer sleeve portion 20 in the axial direction X. The outer peripheral surface 40b of the inner sleeve portion 40 has a polygonal shape corresponding to the inner peripheral surface 20a of the outer sleeve portion 20. The outer diameter of the inner sleeve portion 40 (the diameter of an imaginary circle circumscribing the outer peripheral surface 40 b) is smaller than the inner diameter of the outer sleeve portion 20 (the diameter of an imaginary circle circumscribing the inner peripheral surface 20 a). With this configuration, the inner sleeve portion 40 can move in the axial direction X inside the outer sleeve portion 20. In addition, the inner sleeve portion 40 is rotatable integrally with the outer sleeve portion 20.
The holding portion 42 is formed in a cylindrical shape (cylindrical shape in the present embodiment), and is provided to extend from the inner sleeve portion 40 to the housing portion 24 through the inside of the protruding portion 26 (the inside in the radial direction of the outer member 12). As shown in fig. 2 to 4, the holding portion 42 is formed with a pair of through holes 42a and grooves 42b. As shown in fig. 2, the pair of through holes 42a and the groove 42b are positioned on the other side of the protruding portion 26 in the axial direction X. In the present embodiment, at least a part of the through hole 42a is formed on the other side of the protruding portion 26 in the axial direction X so that a spherical member 80, which will be described later, can protrude outward from the holding portion 42 on the other side of the protruding portion 26 in the axial direction X. Therefore, in the state shown in fig. 2, a part of the through hole 42a may be located on one side of the other end of the protruding portion 26 in the axial direction X. Similarly, in the state shown in fig. 2, a part of the groove 42b may be located on one side of the other end of the protrusion 26 in the axial direction X. In the present embodiment, the center of the through hole 42a in the axial direction X is positioned on the other side of the protruding portion 26 in the axial direction X. Similarly, the center of the groove 42b in the axial direction X is positioned on the other side of the protrusion 26 in the axial direction X.
As shown in fig. 2 to 4, each through hole 42a is formed to penetrate the holding portion 42 in the radial direction of the holding portion 42. In the present embodiment, the pair of through holes 42a are formed to face each other in the radial direction of the holding portion 42. As shown in fig. 2 and 4, the groove 42b is formed in the inner peripheral surface 42c of the holding portion 42. In the present embodiment, the groove 42b is formed in a ring shape along the circumferential direction of the holding portion 42. In the present embodiment, one end side (inner peripheral surface 42c side) of each through hole 42a is opened in the groove 42b. That is, each through hole 42a is formed to communicate the outer peripheral surface 42d of the holding portion 42 with the groove 42b. In the present specification, the radial direction of the holding portion 42 means a direction orthogonal to the axial direction of the holding portion 42. In the present embodiment, the axial direction of the holding portion 42 coincides with the axial direction X of the outer member 12. Therefore, the radial direction of the holding portion 42 coincides with the radial direction of the outer member 12.
As shown in fig. 2, the biasing member 16 is housed in the housing portion 24 so as to be positioned on the other side of the inner member 14 in the axial direction X and bias the inner member 14 to one side in the axial direction X. The biasing member 16 is configured to be expandable and contractible in the axial direction X. In the present embodiment, a coil spring is used as the urging member 16. One end portion in the axial direction X of the biasing member 16 is supported by a distal end portion (the other end portion in the axial direction X) of the holding portion 42, and the other end portion in the axial direction X of the biasing member 16 is supported by an inner surface of the housing portion 24.
The locking portion 18 is held by the holding portion 42 of the inner member 14 in the outer member 12. As shown in fig. 2 and 3, in the present embodiment, the locking portion 18 includes a pair of spherical members 80 and an elastic member 82.
As shown in fig. 2, the pair of spherical members 80 are inserted into the pair of through holes 42a, respectively. In the present embodiment, each spherical member 80 is inserted into the through hole 42a so as to be movable in the radial direction of the holding portion 42. The spherical member 80 is made of, for example, metal. In the present embodiment, the spherical member 80 corresponds to the insertion portion.
Fig. 5 is a diagram illustrating the elastic member 82, fig. 5 (a) is a diagram of the elastic member 82 viewed from the axial direction X, and fig. 5 (b) is a diagram of the elastic member 82 viewed from the radially outer side of the holding portion 42. As shown in fig. 2 and 5, the elastic member 82 is curved in an arc shape along the inner peripheral surface 42c of the holding portion 42, and is held by the holding portion 42 on the inner peripheral surface 42c side. In the present embodiment, the elastic member 82 has a letter C shape. In the present embodiment, the elastic member 82 is a C-letter shaped plate spring made of an elastically deformable material (e.g., metal). The elastic member 82 is formed with a pair of through holes 82a.
As shown in fig. 2, the elastic member 82 is fitted into the groove 42b of the inner member 14. The elastic member 82 supports each spherical member 80 from the inner peripheral surface 42c side of the holder 42 such that a part of each spherical member 80 protrudes outward from the outer peripheral surface 42d of the holder 42 in the radial direction of the holder 42. In the present embodiment, the movement of the inner member 14 in one direction in the axial direction X can be restricted by locking a part of each spherical member 80 protruding outward from the outer peripheral surface 42d of the retainer 42 to the flange surface 26c of the protrusion 26 of the inner member 14. This prevents the inner member 14 from coming off from one side of the outer member 12 in the axial direction X. In the present embodiment, the elastic member 82 corresponds to an elastic portion.
In the present embodiment, the elastic member 82 is fitted into the groove 42b so that the pair of through holes 42a of the holding portion 42 and the pair of through holes 82a of the elastic member 82 face each other in the radial direction of the holding portion 42. In other words, the elastic member 82 is fitted into the groove 42b so that the pair of through holes 42a and the pair of through holes 82a communicate with each other. This allows a part of the spherical member 80 inserted into the through hole 42a to be fitted into the through hole 82a. In this case, the holding portion 42 and the elastic member 82 are locked to each other by the spherical member 80. This can prevent the elastic member 82 from moving in the circumferential direction of the holding portion 42 with respect to the holding portion 42.
In the present embodiment, the diameter of the through hole 82a is smaller than the diameter of the spherical member 80. This prevents the spherical member 80 from falling out from the through hole 42a into the holding portion 42 through the through hole 82a. In the present embodiment, the distance between the inner peripheral surface 24a of the housing portion 24 and the outer peripheral surface 42d of the holding portion 42 (the distance in the radial direction of the outer member 12) is smaller than the diameter of the spherical member 80. This prevents the spherical member 80 from falling out of the through hole 42a into the housing 24 through the gap between the inner peripheral surface 24a and the outer peripheral surface 42 d.
As described above, in the sleeve 10 of the present embodiment, the biasing member 16 biases the inner member 14 toward one side in the axial direction X. Therefore, when no force is applied to the inner member 14 from the outside, the inner member 14 is positioned at a position where the spherical member 80 is locked to the protruding portion 26 of the outer member 12, as shown in fig. 2. In this state, a part of the inner sleeve portion 40 protrudes from the outer sleeve portion 20, and the inner peripheral surface 20a of the outer sleeve portion 20 is not exposed. Therefore, only the inner sleeve portion 40 of the outer sleeve portion 20 and the inner sleeve portion 40 can be used.
On the other hand, as shown in fig. 6, the inner peripheral surface 20a of the outer sleeve portion 20 can be exposed by press-fitting the inner sleeve portion 40 (inner member 14) to the other side in the axial direction X. Thereby, the outer sleeve portion 20 can be used. As described above, in the sleeve 10 of the present embodiment, the outer sleeve portion 20 and the inner sleeve portion 40 can be selectively used by moving the inner sleeve portion 40 (the inner member 14) in the axial direction X.
Next, a method of inserting the inner member 14 into the outer member 12 will be described. Fig. 7 is a diagram for explaining an insertion method of the inner member 14 into the outer member 12.
As shown in fig. 7 (a), when the inner member 14 is inserted into the outer member 12, first, the elastic member 82 is fitted into the groove 42b so that the pair of through holes 42a of the holding portion 42 and the pair of through holes 82a of the elastic member 82 face each other in the radial direction of the holding portion 42. In this state, the spherical members 80 are inserted into the pair of through holes 42a, respectively. In order to prevent the spherical member 80 from falling off from the through hole 42a, for example, grease or the like is preferably applied to the through hole 42 a.
Next, as shown in fig. 7 (b) and 7 (c), the inner member 14 is inserted into the outer member 12. Specifically, the holding portion 42 of the inner member 14 is inserted into the housing portion 24 while passing through the inside of the protruding portion 26. At this time, each spherical member 80 is pressed radially inward of the holding portion 42 by the protruding portion 26 while being held by the through hole 42a of the holding portion 42. Specifically, each spherical member 80 moves radially inward of the holding portion 42 along the tapered surface 26a and the cylindrical surface 26 b. Thereby, each spherical member 80 presses the elastic member 82 radially inward of the holding portion 42, and the elastic member 82 is elastically deformed.
When the pair of spherical members 80 move to the other side in the axial direction X than the cylindrical surface 26b, the pair of spherical members 80 are pushed by the elastic member 82 to move radially outward of the holding portion 42, as shown in fig. 2 (b). Thus, in the radial direction of the holding portion 42, a part of each spherical member 80 protrudes outward from the outer peripheral surface 42d of the holding portion 42. The state in which a part of the spherical member 80 protrudes outward from the outer peripheral surface 42d is maintained by the elastic member 82.
(Effect)
As described above, in the sleeve 10 of the present embodiment, the spherical member 80 is inserted into the through hole 42a so as to be movable in the radial direction of the holding portion 42. The spherical member 80 inserted into the through hole 42a is supported by the elastic member 82 from the inner circumferential surface 42c side of the holder 42 such that a part of the spherical member 80 protrudes outward from the outer circumferential surface 42d of the holder 42. With such a configuration, the inner member 14 can be prevented from falling off from the outer member 12 by engaging a part of the spherical member 80 protruding outward from the outer peripheral surface 42d with the protruding portion 26 of the outer member 12.
In the present embodiment, as described above with reference to fig. 7, the sleeve 10 can be assembled by inserting the inner member 14, which holds the elastic member 82 and the pair of spherical members 80, into the outer member 12. Here, in the present embodiment, the elastic member 82 and the pair of spherical members 80 can be attached to the inner member 14 outside the outer member 12. In this case, the sleeve 10 can be assembled more easily than a conventional sleeve in which an annular member is attached to the inner peripheral surface of an outer member (see, for example, patent document 1).
In the present embodiment, the elastic member 82 is attached to the inner peripheral surface side of the inner member 14. In this regard, in a case where the annular member is attached to the inner peripheral surface of the outer member like a conventional sleeve (see, for example, patent document 1), when the inner member is inserted into the outer member, a part of the annular member is pressed by the inner member in the axial direction of the outer member. Therefore, in the case where the dimensional accuracy of the annular member is not high, there is a risk that: the annular member is press-fitted in the axial direction while being displaced from a predetermined position, or the annular member is deformed in the axial direction between the outer member and the inner member. In this case, the original function of the ring member cannot be exhibited (the inner member is prevented from coming off). On the other hand, in the present embodiment, as described above, the elastic member 82 is attached to the inner peripheral surface side of the inner member 14. In this case, when the inner member 14 is inserted into the outer member 12, the elastic member 82 is pressed radially inward of the holding portion 42 by the spherical member 80, but is not pressed in the axial direction X by the inner member 14 or the outer member 12, or deformed in the axial direction X between the outer member 12 and the inner member 14. As a result, the sleeve 10 can be easily and appropriately assembled.
(other embodiments)
In the above-described embodiment, the pair of insertion portions (the spherical members 80 in the above-described embodiment) is provided in the holding portion 42, but the number of insertion portions is not limited to two, and may be 1, or 3 or more. The number of the through holes 42a of the holding portion 42 may be adjusted according to the number of the insertion portions.
In the above-described embodiment, the case where the locking portion 18 has the spherical member 80 and the elastic member 82 formed of the C-letter shaped plate spring has been described, but the structure of the locking portion is not limited to the above-described example. Fig. 8 is a sectional view showing a sleeve 10a according to another embodiment of the present invention.
As shown in fig. 8, the sleeve 10a of the present embodiment differs from the sleeve 10 described above in that: a locking portion 18a is provided instead of the locking portion 18. The locking portion 18a differs from the locking portion 18 in that: an elastic member 84 is provided instead of the elastic member 82.
Fig. 9 is a view showing the elastic member 84, fig. 9 (a) is a view of the elastic member 84 as viewed from the axial direction X, and fig. 9 (b) is a view of the elastic member 84 as viewed from the radially outer side of the holding portion 42. As shown in fig. 8 and 9, in the sleeve 10a of the present embodiment, a torsion spring is used as the elastic member 84.
In the sleeve 10a of the present embodiment, the elastic member 84 also supports the spherical member 80 from the inner peripheral surface 42c side of the holding portion 42 such that a part of the spherical member 80 protrudes outward from the outer peripheral surface 42d of the holding portion 42 in the radial direction of the holding portion 42, and such that the elastic member 84 is elastically deformed by being pressed inward in the radial direction of the holding portion 42 by the spherical member 80. This also provides the sleeve 10a with the same operational effects as those of the sleeve 10 described above.
Further, as shown in fig. 8 and 9, in the sleeve 10a, the elastic member 84 is formed such that one end portion and the other end portion overlap each other when viewed from the axial direction X. In other words, the elastic member 84 has an annular shape when viewed from the axial direction X. However, an elastic member 84a having a letter C shape when viewed from the axial direction X as shown in fig. 10 may also be used instead of the elastic member 84. In fig. 10, (a) of fig. 10 is a view of the elastic member 84a as viewed from the axial direction X, and (b) of fig. 10 is a view of the elastic member 84a as viewed from the radially outer side of the holding portion 42. In the present embodiment, in order to prevent the ball member 80 from falling into the inner member 14, the gap between the one end portion and the other end portion of the elastic member 84a is set smaller than the diameter of the ball member 80. Further, springs other than the leaf spring and the torsion spring may be used as the elastic member.
The elastic member 84a shown in fig. 10 has a shape in which one end portion and the other end portion are shifted from each other in the axial direction X. However, as shown in fig. 11, an elastic member 84b having one end and the other end that are not displaced in the axial direction X may be used. In fig. 11, (a) of fig. 11 is a view of the elastic member 84b as viewed from the axial direction X, (b) of fig. 11 is a view of the elastic member 84b as viewed from the radially outer side of the holding portion 42, and (c) of fig. 11 is a view showing the sleeve 10a in a state where the elastic member 84b is attached. In the present embodiment, a C-letter shaped annular spring is used as the elastic member 84b. The elastic member 84b is smaller in dimension in the axial direction X than the elastic members 84, 84 a. Therefore, in the present embodiment, as shown in fig. 11 (c), the width (length in the axial direction X) of the groove 42b is set smaller than the case of using the elastic members 84, 84 a. In the present embodiment, too, the gap between the one end and the other end of the elastic member 84b is set smaller than the diameter of the spherical member 80 in order to prevent the spherical member 80 from falling into the inner member 14.
In the above-described embodiment, the case where the insertion portion (the spherical member 80 in the above-described embodiment) and the elastic portion (the elastic members 82, 84a, and 84b in the above-described embodiment) are formed of separate members has been described, but the insertion portion and the elastic portion may be formed integrally. Fig. 12 is a view showing a sleeve according to another embodiment of the present invention, in which fig. 12 (a) is a sectional view showing the sleeve, and fig. 12 (b) is a sectional view showing a portion b-b of fig. 12 (a). In fig. 12 (b), only the engaging portion and the holding portion are shown in order to avoid the complicated drawing.
As shown in fig. 12, the sleeve 10b of the present embodiment is different from the sleeve 10 described above in that: an engagement portion 18b is provided instead of the engagement portion 18. The locking portion 18b includes a pair of rod-shaped portions 86 and a bent portion 88, and the bent portion 88 is formed integrally with the pair of rod-shaped portions 86 so as to connect the pair of rod-shaped portions 86. The pair of rod-shaped portions 86 and the bent portion 88 are made of an elastically deformable material such as metal. In the present embodiment, the rod-shaped portion 86 corresponds to the insertion portion, and the bent portion 88 corresponds to the elastic portion.
Each rod-shaped portion 86 is formed to extend in the radial direction of the holding portion 42. Each of the rod-shaped portions 86 is inserted into the through hole 42a so as to be movable in the radial direction of the holding portion 42. The bent portion 88 is held by the holding portion 42 on the inner peripheral surface 42c side so as to be bent in a semicircular arc shape along the inner peripheral surface 42c of the holding portion 42. The bent portion 88 is fitted into a groove 42b formed in the inner peripheral surface 42c of the holding portion 42.
In the present embodiment, the length of the through hole 42a is greater than the length of the groove 42b in the axial direction X, and the through hole 42a is formed to cut off a part of the groove 42b. In the present embodiment, the groove 42b is divided into two parts by the pair of through holes 42 a. In the present embodiment, each through hole 42a is formed so as to communicate the outer peripheral surface 42d of the holding portion 42 with the groove 42b. Although the detailed description is omitted, in the above-described embodiment, the through-hole 42a and the groove 42b may be formed such that a part of the groove 42b is cut by the through-hole 42 a.
In the sleeve 10b of the present embodiment, the bent portion 88 also supports the rod-like portion 86 from the inner peripheral surface 42c side of the holding portion 42 such that a part of the rod-like portion 86 protrudes outward from the outer peripheral surface 42d of the holding portion 42 in the radial direction of the holding portion 42, and such that the bent portion 88 is elastically deformed by being pressed inward in the radial direction of the holding portion 42 by the rod-like portion 86. Further, similarly to the sleeves 10 and 10a described above, the inner member 14 is restricted from moving to one side in the axial direction X with respect to the outer member 12 by engaging a part of the rod-like portion 86 protruding outward from the outer peripheral surface 42d of the retainer 42 with the protrusion 26 of the outer member 12. Therefore, the sleeve 10b can also obtain the same operational effects as the sleeves 10 and 10a described above.
Fig. 13 is a view showing a sleeve according to still another embodiment of the present invention, in which fig. 13 (a) is a sectional view showing the sleeve, and fig. 13 (b) is a sectional view showing a portion b-b of fig. 13 (a). In fig. 13 (b), only the engaging portion and the holding portion are shown in order to avoid the complicated drawing.
As shown in fig. 13, the sleeve 10c of the present embodiment is different from the sleeve 10 described above in that: a locking portion 18c is provided instead of the locking portion 18. The locking portion 18c includes a spherical member 80, a rod portion 86, and a curved portion 88a formed integrally with the rod portion 86. The rod-shaped portion 86 and the bent portion 88a are made of an elastically deformable material such as metal. In the present embodiment, the spherical member 80 and the rod-shaped portion 86 correspond to the insertion portion, and the bent portion 88a corresponds to the elastic portion.
The ball member 80 is inserted into the one through hole 42a so as to be movable in the radial direction of the holding portion 42. The rod-shaped portion 86 is formed to extend in the radial direction of the holding portion 42. The rod-shaped portion 86 is inserted into the other through hole 42a so as to be movable in the radial direction of the holding portion 42. The bent portion 88a is held by the holding portion 42 on the inner peripheral surface 42c side so as to be bent in a hook shape along the inner peripheral surface 42c of the holding portion 42. The bent portion 88a is fitted into a groove 42b formed in the inner peripheral surface 42c of the holding portion 42.
In the sleeve 10c of the present embodiment, similarly to the sleeve 10b described above, the length of the through hole 42a in the axial direction X is made larger than the length of the groove 42b in the axial direction X, and the through hole 42a is formed so as to cut off a part of the groove 42b. In the present embodiment, each through hole 42a is formed so as to communicate the outer peripheral surface 42d of the holding portion 42 with the groove 42b.
In the present embodiment, the bent portion 88a supports the spherical member 80 and the rod-shaped portion 86 from the inner peripheral surface 42c side of the holding portion 42 such that a part of the spherical member 80 and a part of the rod-shaped portion 86 protrude outward from the outer peripheral surface 42d of the holding portion 42 in the radial direction of the holding portion 42, and such that the bent portion 88a is elastically deformed by being pressed inward in the radial direction of the holding portion 42 by the spherical member 80 and the rod-shaped portion 86. Further, the inner member 14 is restricted from moving to one side in the axial direction X with respect to the outer member 12 by engaging a part of the spherical member 80 and a part of the rod-like portion 86 protruding outward from the outer peripheral surface 42d of the retainer 42 with the protrusion 26 of the outer member 12. Therefore, the sleeve 10c can also obtain the same operational effects as those of the sleeves 10, 10a, and 10b described above.
In the above-described embodiment, the coupling portion 22 of the outer member 12 is configured to be able to be coupled to the driving angle 104 of the impact wrench 100, but the configuration of the coupling portion is not limited to the above-described example, and the coupling portion may be configured to be able to be coupled to another electric power tool. For example, the coupling portion may be configured to be coupled to the impact driver via a rod-shaped coupling member (a driver head or the like). Further, as the configuration of the coupling portion, a configuration of a known socket attached to an electric power tool such as an impact wrench or an impact screwdriver can be used, and thus a detailed description thereof is omitted.
Industrial applicability
According to the present invention, a tool bushing that can be easily assembled can be obtained.
Claims (7)
1. A sleeve for a tool, wherein,
the tool sleeve includes:
a cylindrical outer member having an end surface on one side in an axial direction thereof opened;
a cylindrical inner member inserted into the one end portion of the outer member so as to be movable in the axial direction;
a biasing member that is provided in the outer member at a position closer to the other side in the axial direction than the inner member, and biases the inner member to the one side; and
a locking portion held by the inner member in the outer member,
the lateral member has: a hollow outer sleeve portion provided at the one end portion; a hollow housing portion that houses the biasing member at a position on the other side of the outer sleeve portion; and a protruding portion that is provided between the outer sleeve portion and the housing portion in the axial direction and protrudes inward in a radial direction of the outer member with respect to an inner peripheral surface of the outer sleeve portion and an inner peripheral surface of the housing portion,
the medial member has: a hollow inner sleeve portion positioned within the outer sleeve portion; and a cylindrical holding portion extending from the inner sleeve portion to the housing portion through an inner side of the protruding portion in the radial direction,
a through hole penetrating in a radial direction of the holding portion is formed in the holding portion on the other side than the protruding portion,
the locking portion includes: an insertion portion that is inserted into the through hole so as to be movable in a radial direction of the holding portion; and an elastic portion that supports the insertion portion from an inner peripheral surface side of the holding portion such that a part of the insertion portion protrudes outward from an outer peripheral surface of the holding portion in a radial direction of the holding portion, and such that the elastic portion is elastically deformed by being pressed inward in the radial direction of the holding portion by the insertion portion,
the portion of the insertion portion protruding outward from the outer peripheral surface is locked to the protruding portion of the outer member, thereby preventing the inner member from falling off from the one side of the outer member.
2. The sleeve for a tool according to claim 1,
the elastic portion is curved in an arc shape along an inner peripheral surface of the holding portion, and is held by the holding portion on an inner peripheral surface side of the holding portion.
3. The sleeve for a tool according to claim 1 or 2,
a groove for receiving the elastic portion is formed on an inner peripheral surface of the holding portion,
the through hole is formed to communicate the outer peripheral surface of the holding portion with the groove.
4. The sleeve for a tool according to claim 1 or 2,
the insertion portion and the elastic portion are formed of members independent of each other.
5. The sleeve for a tool according to claim 4,
the insertion portion is constituted by a spherical member.
6. The sleeve for a tool according to claim 1 or 2,
the insertion portion and the elastic portion are integrally formed.
7. The sleeve for a tool according to claim 1 or 2,
the elastic portion has a letter C-shape or a ring-shape when viewed from the axial direction.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2021144922 | 2021-09-06 | ||
| JP2021-144922 | 2021-09-06 | ||
| JP2022-080390 | 2022-05-16 | ||
| JP2022080390A JP2023038153A (en) | 2021-09-06 | 2022-05-16 | Socket for tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115771117A true CN115771117A (en) | 2023-03-10 |
Family
ID=85388432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211080553.3A Pending CN115771117A (en) | 2021-09-06 | 2022-09-05 | Sleeve for tool |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN115771117A (en) |
| TW (1) | TWI822256B (en) |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200942366A (en) * | 2008-04-14 | 2009-10-16 | Jyun-Wun Liao | Torque sleeve |
| CN101607388B (en) * | 2008-06-18 | 2012-05-30 | 胡厚飞 | Connecting rod of screwdriver head |
| JP5390845B2 (en) * | 2008-12-08 | 2014-01-15 | 株式会社プロス | Tool socket |
| JP3154620U (en) * | 2009-08-04 | 2009-10-22 | 長船工業株式会社 | Tool socket |
| JP5519247B2 (en) * | 2009-11-13 | 2014-06-11 | 株式会社プロス | Tightening tool |
| TW201132463A (en) * | 2010-03-31 | 2011-10-01 | Tjm Design Corp | Tool socket |
| JP7118343B2 (en) * | 2017-09-21 | 2022-08-16 | 薪螢企業有限公司 | socket |
| TWI669194B (en) * | 2017-12-14 | 2019-08-21 | 薪螢企業有限公司 | Socket |
| JP6869557B2 (en) * | 2019-07-30 | 2021-05-12 | 株式会社 アイダ | socket |
| CN211639673U (en) * | 2019-12-18 | 2020-10-09 | 薪萤企业有限公司 | Sleeve barrel |
| CN112975803B (en) * | 2019-12-18 | 2022-08-19 | 薪萤企业有限公司 | Sleeve and using method thereof |
-
2022
- 2022-08-16 TW TW111130788A patent/TWI822256B/en active
- 2022-09-05 CN CN202211080553.3A patent/CN115771117A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| TWI822256B (en) | 2023-11-11 |
| TW202313260A (en) | 2023-04-01 |
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