E-type retaining ring insertion tool and E-type retaining ring supply device

Abstract

To provide an E-shaped snap ring insertion tool and the like that can easily insert an E-shaped snap ring from the axial direction of a shaft.SOLUTION: In an E-shaped snap ring insertion tool 100, a body part 110 has a handle 111 at one end. An operation lever 120 is rotatably engaged with a fulcrum provided on the body part 110. A transmission part 140 converts rotational movement of the operation lever 120 into linear movement along the extension direction of the body part 110 and transmits it to the other end. In an operation block 150 of the E-shaped snap ring insertion tool 100, a first gripping part 171 and a second gripping part 181 can grip an E-shaped snap ring by opening and closing laterally in conjunction with the transmission part 140 at the other end of the body part 110. A support surface 155 supports an end surface of the E-shaped snap ring in the vertical direction. An abutment member 160 opens and closes in the vertical direction in conjunction with the transmission part 140, presses the shaft against the E-shaped snap ring, and inserts the E-shaped snap ring to the shaft.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to an E-type retaining ring insertion tool and an E-type retaining ring supply device. [Background technology]

[0002] Various tools have been developed as a means of inserting E-type retaining rings onto shafts.

[0003] For example, the E-shaped retaining ring insertion tool described in Patent Document 1 consists of a flat plate fixed to a handle material with a branched tip, a clamping piece with a groove, and a sliding plate.The E-shaped retaining ring is inserted radially onto the shaft, and the sliding plate moves when the abutting part is pressed against the shaft.

[0004] Furthermore, the E-shaped retaining ring insertion tool described in Patent Document 2 comprises a first clamping piece with a shaft clamping portion that clamps the shaft, a second clamping piece with a retaining ring clamping portion that clamps the E-shaped retaining ring, and an opening / closing member, which slide to bring the shaft and retaining ring closer together. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent No. 6178532 [Patent Document 2] Patent No. 6469829 Summary of the Invention [Problem to be solved by the invention]

[0006] However, depending on the shape of the workpiece or the position of the shaft where the E-type retaining ring is to be inserted, it may be difficult to insert the E-type retaining ring from the radial direction.

[0007] The present disclosure has been made to solve such problems, and aims to provide an E-type retaining ring insertion tool and the like that can stably perform the series of operations for inserting an E-type retaining ring and can easily insert an E-type retaining ring by accessing it from the axial direction. [Means for solving the problem]

[0008] The E-shaped retaining ring insertion tool according to the present disclosure inserts an E-shaped retaining ring by accessing a shaft from the axial direction. The E-shaped retaining ring insertion tool includes a main body, an operating lever, a transmission unit, and an operating block. The main body is a rod-shaped member with a handle at one end. The operating lever is rotatably engaged with a fulcrum provided on the main body. The transmission unit engages with the operating lever to convert the rotational movement of the operating lever into linear movement along the extension direction of the main body and transmits it to the other end of the main body. The operating block includes a first clamping unit and a second clamping unit, a support surface, and an abutting member. The first clamping unit and the second clamping unit can clamp an E-shaped retaining ring by opening and closing in the left-right direction perpendicular to the extension direction in conjunction with the transmission unit at the other end of the main body. The support surface supports the end face of the E-shaped retaining ring in the vertical direction. The abutment member opens and closes in the vertical direction perpendicular to the extension direction and the left-right direction in conjunction with the transmission part, thereby pressing the shaft against the E-shaped retaining ring supported by the support surface and inserting the E-shaped retaining ring onto the shaft.

[0009] The E-shaped retaining ring supply device according to the present disclosure has a rail portion, a retaining ring groove portion, a stopper, and a guide groove portion. The rail portion receives multiple E-shaped retaining rings from a first end portion and guides the E-shaped retaining rings to a second end portion that is lower than the first end portion. The retaining ring groove portion has a width below the second end portion that allows the lowest E-shaped retaining ring to fall into. The stopper receives the E-shaped retaining ring below the retaining ring groove portion. The guide groove portion has a concave shape that corresponds to the outer shape of the operating block of the E-shaped retaining ring insertion tool described in claim 6 in order to guide the operating block to the E-shaped retaining ring that has fallen into the retaining ring groove portion.

[0010] In this disclosure, an "E-shaped retaining ring" refers to a retaining ring that is a hollow, disk-shaped metal plate with an opening, and that is inserted onto a shaft having a circumferential groove in such a way that the opening of the metal plate is pressed and expanded within its elastic range from the radial direction of the shaft. [Effects of the Invention]

[0011] According to the present disclosure, it is possible to provide an E-shaped retaining ring insertion tool and an E-shaped retaining ring supply device that can easily insert an E-shaped retaining ring from the axial direction of a shaft. [Brief explanation of the drawings]

[0012] [Figure 1] This is an overview of the E-type retaining ring insertion tool. [Figure 2] FIG. 1 is a first diagram showing details of an operation block. [Figure 3] FIG. 2 is a second diagram showing details of the operation blocks. [Figure 4] FIG. 3 is a third diagram showing details of the operation blocks. [Figure 5] This is an overview of an E-type retaining ring supply device. [Figure 6] FIG. 1 is a side view of an E-type retaining ring supply device. [Figure 7] FIG. 1 is a first view showing an E-type retaining ring insertion tool and an E-type retaining ring supply device. [Figure 8] FIG. 2 is a second view showing an E-type retaining ring insertion tool and an E-type retaining ring supply device. [Figure 9] FIG. 10 is a third diagram showing an E-type retaining ring insertion tool and an E-type retaining ring supply device. [Figure 10] FIG. 4 is a fourth diagram showing an E-type retaining ring insertion tool and an E-type retaining ring supply device. [Figure 11] FIG. 1 is a first diagram showing a state in which an E-shaped retaining ring insertion tool is inserting an E-shaped retaining ring onto a shaft. [Figure 12] FIG. 2 is a second view showing the state in which the E-shaped retaining ring insertion tool inserts the E-shaped retaining ring onto the shaft. [Figure 13] FIG. 3 is a third diagram showing the state in which the E-shaped retaining ring insertion tool inserts the E-shaped retaining ring onto the shaft. [Figure 14] FIG. 4 is a fourth diagram showing the state in which the E-shaped retaining ring insertion tool inserts the E-shaped retaining ring onto the shaft. [Figure 15] FIG. 5 is a fifth diagram showing the state in which the E-shaped retaining ring insertion tool inserts an E-shaped retaining ring onto a shaft. DETAILED DESCRIPTION OF THE INVENTION

[0013] The present invention will be described below through embodiments of the invention, but the invention according to the claims is not limited to the following embodiments. Furthermore, not all of the configurations described in the embodiments are necessarily essential means for solving the problems. For clarity of explanation, the following description and drawings have been omitted and simplified as appropriate. In each drawing, the same elements are assigned the same reference numerals, and duplicate explanations are omitted as necessary.

[0014] In the following description, the axial direction refers to the direction parallel to the extension direction of the shaft into which the E-shaped retaining ring is inserted, and the radial direction refers to the direction perpendicular to the axial direction of the shaft and extending radially from the axis center.

[0015] (E-type retaining ring insertion tool) An overview of the E-type retaining ring insertion tool will be described with reference to Figure 1. Figure 1 is a schematic view of the E-type retaining ring insertion tool 100. The E-type retaining ring insertion tool 100 accesses the shaft to be worked on from the axial direction and inserts an E-type retaining ring 200. The E-type retaining ring insertion tool 100 mainly comprises a main body 110, an operating lever 120, a transmission unit 140, and an operating block 150.

[0016] For convenience of explaining the positional relationship of the components, a right-handed Cartesian coordinate system is used in Fig. 1. Furthermore, in Fig. 2 and subsequent figures, when a Cartesian coordinate system is used, the X-axis, Y-axis, and Z-axis directions in Fig. 1 coincide with the X-axis, Y-axis, and Z-axis directions of these Cartesian coordinate systems, respectively. In this disclosure, the X-axis direction is also referred to as the left-right direction, the Y-axis direction is also referred to as the extension direction of main body 110, and the Z-axis direction is also referred to as the up-down direction.

[0017] The main body 110 is a rod-shaped member. The main body 110 is a long metal plate, and is made of a predetermined steel plate such as stainless steel or carbon steel. The main body 110 has a handle 111 at one end (the negative Y-axis side) and an operating block 150 at the other end (the positive Y-axis side). The handle 111 is formed by coating the main body 110 with resin at one end of the main body 110. The main body 110 has a fulcrum 130 in the middle. At the fulcrum 130, the main body 110 engages with the operating lever 120.

[0018] The operating lever 120 is rotatably engaged with a fulcrum portion 130 provided on the main body portion 110. Like the main body portion 110, the operating lever 120 is formed from a predetermined steel plate, and the portion that an operator touches when operating it is covered with resin. The operating lever 120 also has a protrusion 121. The protrusion 121 is engaged with a recess 141 of the transmission portion 140. The engagement of the protrusion 121 with the recess 141 causes the operating lever 120 and the transmission portion 140 to move in conjunction with each other.

[0019] The transmission unit 140 engages with the operating lever 120 to convert the rotational movement of the operating lever 120 into linear movement along the extension direction of the main body 110. Furthermore, the transmission unit 140 transmits the linear movement to the operating block 150 on the other end side of the main body 110. More specifically, the transmission unit 140 has a recess 141 in the conversion unit C1 that engages with the protrusion 121. In the conversion unit C1, the recess 141 converts the rotational movement of the operating lever 120 in the rotational direction D1 into linear movement in the linear direction D2 along the extension direction of the main body 110.

[0020] The transmission part 140 is engaged with the main body part 110 at the guide parts C2 and C3. That is, the transmission part 140 is supported by the main body part 110 at the guide parts C2 and C3 so as to be able to move linearly.

[0021] The E-type retaining ring insertion tool 100 further has a lever biasing portion 131. The lever biasing portion 131 is a coil spring that biases the transmission portion 140 in a direction D10 in which the operating lever 120 moves away from the handle 111. The lever biasing portion 131 may also bias the operating lever 120.

[0022] The operating block 150 clamps the E-shaped retaining ring 200 at the other end of the main body 110 by opening and closing in the left-right direction perpendicular to the extension direction in conjunction with the transmission unit 140. The operating block 150 also supports the end face of the E-shaped retaining ring 200 in the up-down direction, and inserts the E-shaped retaining ring 200 onto the shaft by pressing the shaft against the E-shaped retaining ring 200 in conjunction with the transmission unit 140. This allows the E-shaped retaining ring insertion tool 100 to access the shaft from the axial direction and insert the E-shaped retaining ring 200.

[0023] Here, we will further explain the interlocking state of the operating lever 120, transmission unit 140, and operation block 150 in the E-type retaining ring insertion tool 100. The operating lever 120 rotates in a rotation direction D1 with the fulcrum unit 130 as the rotation axis. The operating lever 120 is displaced along the rotation direction D1 to a first position P1, a second position P2, and a third position P3.

[0024] In the first position P1, the operating lever 120 is in its most open state. In the second position P2, the operating lever 120 is in its closed state closer to the first position P1. In the third position P3, the operating lever 120 is in its closed state closer to the second position P2, that is, it is in its most closed state. In other words, in the first position P1, the operating lever 120 is in its farthest position from the handle 111. In the second position P2, the operating lever 120 is in its closer position to the handle 111 than the first position P1. In the third position P3, the operating lever 120 is in its closer position to the handle 111 than the second position P2.

[0025] The transmission unit 140 converts the rotational direction D1 into a linear direction D2 at the conversion unit C1 and transmits the movement of the operating lever 120 to the operation block 150. That is, the transmission unit 140 is displaced along the linear direction D2 depending on the position of the operating lever 120 (first position P1, second position P2, or third position P3). The operation block 150 changes state depending on the position of the transmission unit 140.

[0026] In the present disclosure, the state of the E-type retaining ring insertion tool 100 when the operating lever 120 is in the first position P1 is referred to as the first state. Similarly, the state of the E-type retaining ring insertion tool 100 when the operating lever 120 is in the second position P2 is referred to as the second state. The state of the E-type retaining ring insertion tool 100 when the operating lever 120 is in the third position P3 is referred to as the third state. The operating lever 120 is set so that in the second state it is closer to the handle 111 than in the first state, and so that in the third state it is closer to the handle 111 than in the second state. As a result, the E-type retaining ring insertion tool 100 holds the E-type retaining ring 200 as a series of operations that displace the operating lever 120, and also inserts the held E-type retaining ring 200 onto the shaft.

[0027] (Operation block) The operation block 150 will be further described with reference to FIGS. 2 to 4. FIG. 2 is a first diagram showing details of the operation block 150. FIG. 3 is a second diagram showing details of the operation block 150. FIG. 4 is a third diagram showing details of the operation block 150. The operation block 150 shown in FIG. 2 shows the case where the operating lever 120 is in the first position P1, i.e., the first state. The operation block 150 shown in FIG. 3 shows the case where the operating lever 120 is in the second position P2, i.e., the second state. The operation block 150 shown in FIG. 4 shows the case where the operating lever 120 is in the third position P3, i.e., the third state.

[0028] The operating block 150 mainly comprises an upper member 151, a first side member 152, a second side member 153, a contact member 160, a first holder 170, and a second holder 180. The operating block 150 is fixed to the arm portion 112. The operating block 150 has a predetermined structure in which the transmission portion 140 is movable forward and backward inside the operating block 150. The operating block 150 also has a retaining ring receiving portion C4 at its tip which holds an E-shaped retaining ring 200 and includes a space for receiving a shaft from the axial direction while holding the E-shaped retaining ring 200.

[0029] The upper member 151 is a member fixed to the upper surface of the operating block 150. The upper member 151 has an opening 154 and a support surface 155. The opening 154 is a peephole that allows an operator to visually observe the E-shaped retaining ring 200 and the shaft when the operator brings the operating block 150 close to the shaft and sets the E-shaped retaining ring 200. This allows the operator operating the E-shaped retaining ring insertion tool to set the E-shaped retaining ring while observing the state of the E-shaped retaining ring 200 and the shaft through the opening 154. The support surface 155 supports the end face of the E-shaped retaining ring 200 in the vertical direction. More specifically, the support surface 155 supports the upper end face of the E-shaped retaining ring 200 when the E-shaped retaining ring 200 clamped by the operating block 150 is inserted onto the shaft.

[0030] The first side surface member 152 is a member fixed to one side surface (the side surface on the positive side of the X-axis) of the operating block 150, and supports the first holder 170. The second side surface member 153 is a member fixed to the other side surface (the side surface on the negative side of the X-axis) of the operating block 150, and supports the second holder 180. The first side surface member 152 and the second side surface member 153 face each other and are spaced apart in the left-right direction. The first side surface member 152 and the second side surface member 153 support the abutment member 160 therebetween so that the abutment member 160 can move up and down.

[0031] 2, the outer diameter portions of the first side surface member 152 and the second side surface member 153 have a width W21. This width W21 is used in an E-type retaining ring supply device, which will be described later. The width W21 will be described in detail later.

[0032] The abutment member 160 operates in conjunction with the transmission unit 140 in the vertical direction (Z-axis direction) that is perpendicular to the extension direction (Y-axis direction) and the left-right direction (X-axis direction). The abutment member 160 has an abutment surface 161. The abutment surface 161 faces and is spaced apart from the support surface 155 in the vertical direction. In other words, as the abutment member 160 moves up and down, the distance between the abutment surface 161 and the support surface 155 approaches or moves away from each other.

[0033] 2, the distance H1 is between the support surface 155 and the abutment surface 161. At the distance H1, the abutment member 160 can receive the shaft in the retaining ring receiving portion C4 when the E-shaped retaining ring 200 is clamped between the first clamping portion 171 and the second clamping portion 181.

[0034] 3, the distance H2 is between the support surface 155 and the abutment surface 161. At the distance H2, the abutment member 160 abuts the shaft against the E-shaped retaining ring 200 when the first clamping portion 171 and the second clamping portion 181 clamp the E-shaped retaining ring 200.

[0035] 4, the distance H3 is between the support surface 155 and the abutment surface 161. At the distance H3, the abutment member 160 inserts the E-shaped retaining ring 200 clamped between the first clamping portion 171 and the second clamping portion 181 onto the shaft.

[0036] In this way, the abutment member 160 performs an opening and closing operation, whereby the abutment member 160 presses the shaft against the E-shaped retaining ring 200 supported by the support surface 155. The abutment member 160 also presses the shaft further, thereby inserting the E-shaped retaining ring 200 onto the shaft.

[0037] The first holder 170 and the second holder 180 are elastic members provided symmetrically in the left-right direction. The first holder 170 and the second holder 180 are made of a material such as spring stainless steel, phosphor bronze, or beryllium. The first holder 170 and the second holder 180 are supported by a first support portion 172 and a second support portion 182 in the first side member 152 and the second side member 153, respectively. The first holder 170 and the second holder 180 are shaped like rectangular plates whose tips are bent at a right angle in the direction approaching each other. The tip of the first holder 170 is the first clamping portion 171. The tip of the second holder 180 is the second clamping portion 181.

[0038] The first clamping portion 171 and the second clamping portion 181 are opened and closed in the left-right direction (X-axis direction) perpendicular to the extension direction (Y-axis direction) in conjunction with the transmission portion 140 at the tip of the E-shaped retaining ring insertion tool 100. As a result, the first clamping portion 171 and the second clamping portion 181 are set to be able to hold the E-shaped retaining ring 200 by elastic force.

[0039] That is, the first clamping portion 171 and the second clamping portion 181 are closed in the first state and the second state. Therefore, the distance between the first clamping portion 171 and the second clamping portion 181 (distance W11 in FIGS. 2 and 3) is smaller than the outer diameter of the E-shaped retaining ring 200. On the other hand, the first clamping portion 171 and the second clamping portion 181 are open in the third state. In this case, the distance between the first clamping portion 171 and the second clamping portion 181 (distance W12 in FIG. 4) is larger than the outer diameter of the E-shaped retaining ring 200 in the open state.

[0040] When viewed from the Y-axis direction, the first clamping portion 171 and the second clamping portion 181 have opposing end faces that have a concave shape that follows the outer diameter of the E-shaped retaining ring 200. This allows the first clamping portion 171 and the second clamping portion 181 to hold the E-shaped retaining ring 200 appropriately. Furthermore, the thickness of the first clamping portion 171 and the second clamping portion 181 can be selected to be approximately 0.3 to 0.5 millimeters thicker than the thickness of the E-shaped retaining ring 200. Furthermore, the concave end face portions of the first clamping portion 171 and the second clamping portion 181 may have a V-groove or U-groove shape to support the ridge line of the outer shape of the E-shaped retaining ring 200. This shape allows the E-shaped retaining ring insertion tool 100 to hold the E-shaped retaining ring 200 appropriately.

[0041] The abutting member 160 protrudes below the outer shape of the operating block in the first state, and is housed within the outer shape of the operating block in the second and third states. This provides a predetermined function in relation to the E-type retaining ring supply device 300 described later.

[0042] The above has described the operation block 150. In the E-type retaining ring insertion tool 100, the operating lever 120 can be rotated to a first position P1, a second position P2, and a third position P3, and accordingly, the E-type retaining ring insertion tool 100 transitions between a first state, a second state, and a third state.

[0043] The first clamping portion 171 and the second clamping portion 181 are located at a distance smaller than the outer diameter of the E-shaped retaining ring from the first state to the second state, and are located at a distance larger than the outer diameter of the E-shaped retaining ring in the third state. In the first state, the abutting member 160 is in a position where the operating block 150 can receive the shaft when the first clamping portion 171 and the second clamping portion 181 clamp the E-shaped retaining ring 200. In the second state, the abutting member 160 is in a position where the support surface 155 causes the shaft to abut against the E-shaped retaining ring 200 whose end face it supports. When changing from the second state to the third state, the abutting member 160 moves in a direction where the E-shaped retaining ring 200 is inserted onto the shaft.

[0044] As a result, the E-shaped retaining ring insertion tool 100 can hold the E-shaped retaining ring 200 through a series of easy operations, and can insert the held E-shaped retaining ring 200 onto a shaft.

[0045] (E-type retaining ring supply device) Next, the E-type retaining ring supply device 300 will be described with reference to Figures 5 and 6. Figure 5 is a schematic view of the E-type retaining ring supply device 300. Figure 6 is a side view of the E-type retaining ring supply device 300.

[0046] The E-shaped retaining ring supply device 300 stocks a plurality of E-shaped retaining rings 200 and sequentially supplies the stored E-shaped retaining rings 200 to the E-shaped retaining ring insertion tool 100. The E-shaped retaining ring supply device has a base portion 310, a rail portion 320, a guide groove portion 330, and an oscillating arm 340 as its main components.

[0047] The base portion 310 is placed on a floor surface and supports a rail portion 320. The rail portion 320 receives a plurality of E-shaped retaining rings 200 from a first end portion 321 on one end side. The rail portion 320 is inclined downward from the first end portion 321 toward a second end portion 322 on the other end side. The rail portion 320 shown in FIG. 5 is inclined at an angle θ1. Therefore, the rail portion 320 guides the E-shaped retaining ring 200 received from the first end portion 321 to the second end portion 322, which is lower than the first end portion 321. In other words, the E-shaped retaining ring 200 supplied to the first end portion 321 slides down along the rail portion 320 toward the second end portion 322 due to its own weight.

[0048] At the second end 322, the rail portion 320 has a retaining ring groove portion 323 and a stopper 324. The retaining ring groove portion 323 has a width that allows the lowest E-shaped retaining ring 200 to fall into on the lower side of the second end 322. In other words, the width of the retaining ring groove portion 323 is wider than the thickness of the E-shaped retaining ring 200 and narrower than twice the thickness of the E-shaped retaining ring 200. The stopper 324 receives the E-shaped retaining ring 200 on the lower side of the retaining ring groove portion 323.

[0049] The guide groove 330 is a guide groove for guiding the operating block 150 of the E-shaped retaining ring insertion tool 100 to the E-shaped retaining ring 200 that has dropped into the retaining ring groove 323. The guide groove 330 has a concave shape whose width W22 in the left-right direction corresponds to the outer width W21 of the operating block 150. In other words, the width W22 of the guide groove 330 is large enough to receive the operating block 150 and guide it to the second end 322 without any rattle. This allows the E-shaped retaining ring supply device 300 to suitably supply the E-shaped retaining ring 200 to the E-shaped retaining ring insertion tool 100.

[0050] The vibration arm 340 is a cantilever-shaped member that protrudes from the lower part of the guide groove portion 330 to the outside of the guide groove portion 330 and has a force receiving portion 341 that receives impact or vibration due to an external force. As a result, the E-type retaining ring supply device 300 can set the E-type retaining ring 200 in the retaining ring groove portion 323 with a simple configuration.

[0051] Figure 6 shows three vertically arranged images of the E-type retaining ring supply device 300 at three different times. Note that for ease of explanation, the E-type retaining ring supply device 300 shown in Figure 6 is partially shown in cross section. The top image of the E-type retaining ring supply device 300 at time T1 shows multiple E-type retaining rings 200 sliding down toward the second end 322.

[0052] 6 shows the state of the E-type retaining ring supply device 300 at time T2 after time T1. At time T2, the E-type retaining rings 200 have fallen onto the second end 322.

[0053] At this time, the lowest E-shaped retaining ring 200 is pressed against the stopper 324 by the other multiple E-shaped retaining rings 200. Therefore, the lowest E-shaped retaining ring 200 cannot fall into the retaining ring groove 323. In this state, the worker applies an impact to the vibration arm 340, for example, by lightly hitting the operating block 150 of the E-shaped retaining ring insertion tool 100 against the force receiving portion 341. Then, the pressing force from the other E-shaped retaining rings 200 is reduced by this vibration, allowing the lowest E-shaped retaining ring 200 to fall into the retaining ring groove 323.

[0054] The lower part of Figure 6 shows the state of the E-type retaining ring supply device 300 at time T3 after time T2. At time T3, the E-type retaining ring supply device 300 is in a state in which one E-type retaining ring 200 is set in the E-type retaining ring 200. After the E-type retaining ring 200 is set in the retaining ring groove portion 323, the operator inserts the E-type retaining ring insertion tool 100 into the guide groove portion 330. At this time, the operator moves the operating lever 120 close to the handle 111 to place it in the third state.

[0055] (The E-type retaining ring insertion tool holds the E-type retaining ring) Next, with reference to Figure 7 and subsequent figures, a state will be described in which the E-shaped retaining ring supplying device 300 supplies the E-shaped retaining ring 200 to the E-shaped retaining ring insertion tool 100, and the E-shaped retaining ring insertion tool 100 receives the E-shaped retaining ring 200 from the E-shaped retaining ring supplying device 300. Figure 7 is a first diagram showing the E-shaped retaining ring insertion tool 100 and the E-shaped retaining ring supplying device 300. Note that in Figure 7 and subsequent figures, the E-shaped retaining ring insertion tool 100 and the E-shaped retaining ring supplying device 300 are shown partially in cross section for ease of explanation. Furthermore, in Figure 7 and subsequent figures, the extension direction of the main body 110 is shown to coincide with the horizontal direction of the drawings for ease of understanding.

[0056] In Figure 7, with the operating lever 120 at the third position P3, the operator moves the operating block 150 along the guide groove 330 and approaches the E-shaped retaining ring 200. In other words, the E-shaped retaining ring insertion tool 100 is in the third state. Therefore, the lower surfaces of the first side member 152 and the second side member 153 of the operating block 150 are in contact with the guide groove 330. Furthermore, the abutting member 160 is housed inside the outer shape of the operating block 150. Therefore, the abutting member 160 is not in contact with the guide groove 330.

[0057] In the operation block 150 in the third state, the first holding body 170 and the second holding body 180 are spread apart from each other. That is, the first clamping portion 171 and the second clamping portion 181 are in a state where they can receive the E-shaped retaining ring 200.

[0058] At this time, the guide groove portion 330 of the E-type retaining ring supply device 300 is set to a position where the first clamping portion 171 and the second clamping portion 181 can clamp the E-type retaining ring 200 when the E-type retaining ring insertion tool 100 in the third state approaches the E-type retaining ring 200 along the guide groove portion 330.

[0059] Next, with reference to Figure 8, the state after Figure 7 will be described. Figure 8 is a second diagram showing the E-type retaining ring insertion tool 100 and the E-type retaining ring supply device 300. In Figure 8, the tip of the operating block 150 abuts against the second end 322 of the rail portion 320. In addition, the E-type retaining ring insertion tool 100 shown in Figure 8 has the operating lever 120 in the third position P3. In other words, the E-type retaining ring insertion tool 100 is in the third state.

[0060] In the above situation, the distance between the first clamping portion 171 and the second clamping portion 181 is greater than the outer diameter of the E-shaped retaining ring 200. Therefore, the operator opens the operating lever 120 from the third position P3 toward the second position P2 while keeping the operating block 150 pressed against the second end portion 322. This causes the E-shaped retaining ring insertion tool 100 to transition from the third state to the second state. That is, the first clamping portion 171 and the second clamping portion 181 are displaced in the direction in which they clamp the E-shaped retaining ring 200.

[0061] Next, we will explain Fig. 9. Fig. 9 is a third diagram showing the E-type retaining ring insertion tool 100 and the E-type retaining ring supply device 300. The E-type retaining ring insertion tool 100 shown in Fig. 9 is in a state where the operating lever 120 is in the second position P2. In other words, the E-type retaining ring insertion tool 100 is in the second state.

[0062] In this state, the transmission unit 140 of the E-type retaining ring insertion tool 100, which has transitioned from the third state to the second state described above, moves toward the handle 111 in the extension direction of the main body 110, i.e., in the negative Y-axis direction. The abutting member 160 also moves downward, i.e., in the negative Z-axis direction, in conjunction with the transmission unit 140. The first clamping unit 171 and the second clamping unit 181 are displaced toward each other in conjunction with these movements. The first holding body 170 and the second holding body 180 clamp the E-type retaining ring 200 by elastic force.

[0063] Next, we will explain Figure 10. Figure 10 is a fourth diagram showing the E-type retaining ring insertion tool 100 and the E-type retaining ring supply device 300. The E-type retaining ring insertion tool 100 shown in Figure 10 is in a state where the operating lever 120 is in the first position P1. In other words, the E-type retaining ring insertion tool 100 is in the first state.

[0064] In this state, the transmission unit 140 of the E-type retaining ring insertion tool 100, which has transitioned from the second state to the first state described above, further moves in the extension direction of the main body 110, i.e., in the negative Y-axis direction. The abutting member 160 also moves further downward, i.e., in the negative Z-axis direction, in conjunction with the transmission unit 140, and protrudes from the outer shape of the operating block 150. As a result, the abutting member 160 abuts against the guide groove 330. Furthermore, the operating block 150 moves upward in reaction to the abutting member 160 abutting against the guide groove 330. At this time, the E-type retaining ring 200, which is sandwiched between the first holding body 170 and the second holding body 180, is released from the retaining ring groove 323.

[0065] As described above, the E-type retaining ring insertion tool 100 inserts the E-type retaining ring 200 from the E-type retaining ring supply device 300. The operation of receiving the E-shaped retaining ring 200 and holding it in the operating block 150 has been described. In the above operation, the operator operating the E-shaped retaining ring insertion tool 100 grips the handle 111 and the operating lever 120, and inserts the operating block 150 into the guide groove portion 330 with the operating lever 120 at the third position P3. Next, the operator releases the operating lever 120 with the lever abutting against the stopper 324. Then, the elastic force of the lever biasing portion 131 causes the E-shaped retaining ring insertion tool 100 to transition from the third state to the first state. In the first state, the E-shaped retaining ring insertion tool 100 is in a state where it can be removed from the E-shaped retaining ring supply device 300 while clamping the E-shaped retaining ring 200.

[0066] Therefore, the E-shaped retaining ring supply device 300 can accept the E-shaped retaining ring insertion tool 100 in the third state, and the operator can perform the simple operation of releasing the operating lever 120, thereby suitably supplying the E-shaped retaining ring 200 to the E-shaped retaining ring insertion tool 100. Furthermore, the E-shaped retaining ring insertion tool 100 can suitably hold the E-shaped retaining ring 200 by the simple operation of butting the operating block 150 against the E-shaped retaining ring supply device 300 with the operating lever 120 closed, and releasing the operating lever 120.

[0067] (The E-type retaining ring insertion tool inserts an E-type retaining ring onto the shaft) Next, the operation of the E-type retaining ring insertion tool 100 to insert the E-type retaining ring 200 onto a shaft will be described with reference to Figure 11 and subsequent figures. Figure 11 is a first diagram showing the situation in which the E-type retaining ring insertion tool 100 inserts the E-type retaining ring 200 onto the shaft 400 that is the work target.

[0068] 11 shows the E-type retaining ring insertion tool 100 with the operating lever 120 at the first position P1. In other words, the E-type retaining ring insertion tool 100 is in the first state. As described above, the operator receives and holds the E-type retaining ring 200 from the E-type retaining ring supply device 300, and uses the E-type retaining ring insertion tool 100 to access the shaft 400, which is the object of the work, from the axial direction. At this time, the operator can operate the E-type retaining ring insertion tool 100 through the opening 154 to receive the shaft 400 into the retaining ring receiving portion C4.

[0069] Figure 12 is a second diagram showing the state in which the E-shaped retaining ring insertion tool 100 is inserting the E-shaped retaining ring 200 onto the shaft 400. The E-shaped retaining ring insertion tool 100 shown in Figure 12 is still in the first state. The E-shaped retaining ring insertion tool 100 shown in Figure 12 also shows a state in which the E-shaped retaining ring 200 has been set into the groove in the shaft 400. The operator can visually check through the opening 154 that the E-shaped retaining ring 200 has been correctly set onto the shaft 400.

[0070] Fig. 13 is a third diagram showing the state in which the E-type retaining ring insertion tool 100 is inserting the E-type retaining ring 200 onto the shaft 400. The E-type retaining ring insertion tool 100 shown in Fig. 13 is in a state in which the position of the operating lever 120 has been displaced from the first position P1 to the second position P2. In other words, the E-type retaining ring insertion tool 100 has transitioned from the first state to the second state.

[0071] In the above-described situation, the transmission unit 140 moves toward the operating block 150 in the extension direction of the main body 110, i.e., in the positive direction of the Y-axis, in conjunction with the movement of the operating lever 120. The abutting member 160 moves upward, i.e., in the positive direction of the Z-axis, in conjunction with the transmission unit 140. As a result, the abutting surface 161 of the abutting member 160 abuts against the lower part of the shaft 400 and presses the shaft 400 upward. Meanwhile, the support surface 155, which is located opposite the abutting surface 161, supports the upper end of the E-shaped retaining ring 200 and presses the E-shaped retaining ring 200 downward as a reaction force to the pressing force of the abutting member 160.

[0072] Fig. 14 is a fourth diagram showing the state in which the E-type retaining ring insertion tool 100 is inserting the E-type retaining ring 200 onto the shaft 400. The E-type retaining ring insertion tool 100 shown in Fig. 14 is in a state in which the position of the operating lever 120 has been displaced from the second position P2 to the third position P3. In other words, the E-type retaining ring insertion tool 100 has transitioned from the second state to the third state.

[0073] In the above-described situation, the transmission unit 140 moves further toward the operating block 150 in the extension direction of the main body 110, i.e., in the positive direction of the Y axis, in conjunction with the movement of the operating lever 120. The abutting member 160 moves further upward, i.e., in the positive direction of the Z axis, in conjunction with the transmission unit 140. As a result, the E-shaped retaining ring 200, which is pressed downward by the support surface 155, is inserted into the shaft 400, which is pressed upward by the abutting surface 161. At this time, the first retaining body 170 and the second retaining body 180 in the third state have gone from a state in which they held the E-shaped retaining ring 200 to a state in which they release the E-shaped retaining ring 200.

[0074] Figure 15 is a fifth diagram showing the state in which the E-type retaining ring insertion tool 100 is inserting the E-type retaining ring 200 onto the shaft 400. The E-type retaining ring insertion tool 100 shown in Figure 15 is in a state in which the operating lever 120 is in the third position P3. In other words, the E-type retaining ring insertion tool 100 is in the third state, continuing from the state in Figure 14.

[0075] 14, after inserting the E-shaped retaining ring 200 onto the shaft 400, the operator pulls out the E-shaped retaining ring insertion tool 100 in the axial direction of the shaft 400, i.e., in the negative Y-axis direction, while maintaining the position of the operating lever 120 at the third position P3. At this time, the first holding body 170 and the second holding body 180 have released the E-shaped retaining ring 200, so the E-shaped retaining ring insertion tool 100 can be smoothly removed from the shaft 400. This completes the series of operations.

[0076] The above has described the operation of the E-shaped retaining ring insertion tool 100 to insert the E-shaped retaining ring 200 onto the shaft 400. As described above, the E-shaped retaining ring insertion tool 100 according to the present disclosure can stably perform a series of operations, and can access the shaft 400 from the axial direction to smoothly insert the E-shaped retaining ring 200 onto the shaft 400. Therefore, according to the present disclosure, it is possible to provide an E-shaped retaining ring insertion tool and an E-shaped retaining ring supply device that can stably perform a series of operations to insert an E-shaped retaining ring and can easily insert an E-shaped retaining ring from the axial direction.

[0077] Although the present invention has been described above with reference to the embodiments, the present invention is not limited to the above. Various modifications that can be understood by those skilled in the art can be made to the configuration and details of the present invention within the scope of the invention. [Explanation of symbols]

[0078] 100 E-type retaining ring insertion tool 110 Main body 111 Handle 112 Arm section 120 Operating lever 121 Convex part 130 Fulcrum 131 Lever biasing part 140 Transmission Unit 141 recess 150 Action Blocks 151 Upper member 152 First side member 153 Second side member 154 Opening 155 Support surface 160 Contact member 161 Contact surface 170 First holding body 180 Second holding body 171 First clamping part 172 1st support part 181 Second clamping part 182 Second support part 200 E-type retaining ring 300 E-type retaining ring supply device 310 Base 320 Rail section 321 First end 322 Second end 323 Retaining ring groove 324 Stopper 330 Guide groove 340 Vibration Arm 341 Force receiving part 400 axes C1 conversion unit C2 Guide part C3 Guide part C4 retaining ring receiving part P1 1st position P2 2nd position P3 3rd position

Claims

1. An E-type retaining ring insertion tool that accesses a shaft to be worked on from the axial direction and inserts an E-type retaining ring, a main body portion which is a rod-shaped member having a handle on one end side; an operating lever that is rotatably engaged with a fulcrum provided on the main body; a transmission section that engages with the operating lever to convert the rotational movement of the operating lever into a linear movement along the extension direction of the main body section and transmits the linear movement to the other end of the main body section; and an operating block having, at the other end side, a first clamping section and a second clamping section that are capable of clamping the left and right outer end faces of the E-shaped retaining ring with an opening therebetween by opening and closing in a left-right direction perpendicular to the extension direction in conjunction with the linear movement of the transmission section caused by the rotational movement of the operating lever, a support surface that supports the outer end face of the E-shaped retaining ring on the opposite side in the vertical direction to the opening side, and a contact member that is opened and closed in a up-down direction perpendicular to the extension direction and the left-right direction in conjunction with the linear movement of the transmission section caused by the rotational movement of the operating lever, thereby pressing the opening of the E-shaped retaining ring supported by the support surface against the shaft from above, pushing the E-shaped retaining ring onto the shaft, and inserting the E-shaped retaining ring onto the shaft; a lever biasing portion that biases either the transmission portion or the operation lever in a direction in which the operation lever moves away from the handle; Equipped with The first clamping portion is provided at a tip of a first holding body which is an elastic member, The second clamping portion is provided at a tip of a second holding body which is an elastic member, the operating lever is rotatable to a first state, a second state, and a third state, and is set so that the position in the second state is closer to the handlebar than the position in the first state, and the position in the third state is closer to the handlebar than the position in the second state, When the operating lever is rotated from the first state to the third state, the transmission unit moves toward the other end of the main body, and the first holding body and the second holding body spread apart in the operation block, thereby opening the first clamping unit and the second clamping unit; when the operating lever is rotated from the third state to the first state, the transmission unit moves toward one end of the main body, and the first holding body and the second holding body are displaced toward each other by elastic force in the operation block, thereby closing the first clamping unit and the second clamping unit; the first clamping portion and the second clamping portion are located at a distance smaller than the outer diameter of the E-shaped retaining ring from the first state to the second state, and can clamp the E-shaped retaining ring by the elastic force between the first holder and the second holder, and are located at a distance larger than the outer diameter of the E-shaped retaining ring in the third state, and can release the E-shaped retaining ring, The abutting member is located in a position where the operating block can receive the shaft when the first clamping portion and the second clamping portion clamp the E-shaped retaining ring in the first state, and is located in a position where the support surface abuts the shaft against the E-shaped retaining ring that supports the outer end surface on the opposite side to the opening side in the second state, and moves in a direction where the E-shaped retaining ring is inserted onto the shaft when the state changes from the second state to the third state. E-type retaining ring insertion tool.

2. the operating block has an upper member having the support surface at a position facing the abutting member, The upper member has an opening that allows an operator to visually observe the E-shaped retaining ring and the shaft when the operator moves the operating block close to the shaft and sets the E-shaped retaining ring. The E-shaped retaining ring insertion tool according to claim 1.

3. the abutment member protrudes below the outer shape of the operating block in the first state, and is housed within the outer shape of the operating block in the second state and the third state. The E-shaped retaining ring insertion tool according to claim 1 or 2.

4. a rail portion that receives a plurality of E-shaped retaining rings from a first end portion and guides the E-shaped retaining rings to a second end portion that is lower than the first end portion; a retaining ring groove portion on the lower side of the second end portion, the retaining ring groove portion having a width that allows the lowest E-shaped retaining ring to fall therein; a stopper that receives the E-shaped retaining ring on the lower side of the retaining ring groove; and a guide groove portion having a concave shape corresponding to the outer shape of the operating block, in order to guide the operating block of the E-shaped retaining ring insertion tool according to claim 3 to the E-shaped retaining ring that has dropped into the retaining ring groove portion. E-type retaining ring supply device.

5. The guide groove portion is configured so that the E-shaped retaining ring insertion tool in the third state can clamp the E-shaped retaining ring positioned in the retaining ring groove portion.

5. The E-shaped retaining ring supply device according to claim 4.

6. a cantilever-shaped vibration arm that protrudes from a lower portion of the guide groove portion to the outside of the guide groove portion and has a force-receiving portion that receives impact or vibration due to an external force; 6. The E-shaped retaining ring supply device according to claim 5.

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