Toggle-type clamping device

Abstract

The present invention provides a toggle-type clamping device that prevents the clamping arm from rotating toward the clamped side when it is in the unclamped state. [Solution] The toggle-type clamping device 1 comprises an arm 3, a handle 4, and an arm-side holding part 51 and a handle-side holding part 61 that are attracted to each other by magnetic force. In the clamped state, the arm and the handle are horizontal, and in the unclamped state, the arm and the handle are raised upward and move closer to each other. The arm-side holding part has a magnetic material contained in the arm, and the handle-side holding part has a magnet contained in the handle. In the unclamped state, the arm-side holding part and the handle-side holding part are positioned in a positional relationship that allows them to be attracted to each other by magnetic force.

Description

Technical Field

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[0001] The present disclosure relates to a toggle clamp device.

Background Art

[0002] Conventionally, a toggle clamp device of a type that presses and fixes a workpiece downward (hereinafter, also referred to as a downward pressing type toggle clamp device) is known (for example, see Patent Document 1 below). In the downward pressing type toggle clamp device, the arm and the handle are horizontal in the clamped state, and lift upward and approach each other in the unclamped state.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in the conventional downward pressing type toggle clamp device, a problem has been found that the clamp arm may rotate toward the clamped state side in the unclamped state. One aspect of the present disclosure provides a technique for suppressing the rotation of the clamp arm toward the clamped state side in the unclamped state.

Means for Solving the Problems

[0005] One aspect of the present disclosure is a toggle clamping device comprising an arm (3), a handle (4), and arm-side holding parts (51, 52, 53) and handle-side holding parts (61, 62) that are magnetically attracted to each other. The arm and handle are horizontal in the clamped state and rise upward and move closer to each other in the unclamped state. The arm-side holding parts have a magnetic material contained in the arm, and the handle-side holding parts have a magnet contained in the handle. In the unclamped state, the arm-side holding parts and the handle-side holding parts are positioned in a positional relationship that allows them to be magnetically attracted to each other.

[0006] As a result, when the arm and handle approach each other in the unclamped state, a magnetic attraction occurs, and the clamp arm is held in place by magnetic force. Consequently, rotation of the clamp arm toward the clamped state is suppressed. [Brief explanation of the drawing]

[0007] [Figure 1] This is a perspective view showing the clamping device. [Figure 2] This is a side view of the clamping device when it is in the clamped position. [Figure 3] This is a side view of the clamping device when it is in the unclamped state. [Figure 4] This is a front view showing the holding part in the unclamped state, and is a partially enlarged view with the arm omitted. [Figure 5] Figures 5A to 5C are partial side views of the clamping device in the unclamped state, where Figure 5A shows the second embodiment, Figure 5B shows the third embodiment, and Figure 5C shows the fourth embodiment. [Figure 6] Figures 6A to 6C are partially exploded perspective views of the clamping device in the unclamped state, with Figure 6A showing the second embodiment, Figure 6B showing the third embodiment, and Figure 6C showing the fourth embodiment. [Figure 7]Figures 7A and 7B show a fifth embodiment; Figure 7A is a partial side view of the clamping device in the unclamped state, and Figure 7B is a partially exploded perspective view of the clamping device in the clamped state. [Modes for carrying out the invention]

[0008] Embodiments of this disclosure will be described below with reference to the drawings. In the following description, the same or corresponding components will be denoted by the same reference numerals. [1. First Embodiment] [1-1. Overall Structure] As shown in Figures 1 to 3, the toggle-type clamp device 1 (hereinafter referred to as clamp device 1) comprises a support part 2, a clamp arm (hereinafter referred to as arm 3), and a handle 4.

[0009] The clamping device 1 is equipped with a known linkage mechanism and is configured to be switchable between a clamped state and an unclamped state by operating the handle 4. In this specification, the operation of switching between the clamped state and the unclamped state by operating the handle 4 is also referred to as the clamping operation.

[0010] As shown in Figure 1, in the clamped state, the workpiece W is pressed by the arm 3. As shown in Figure 2, the arm 3 and the handle 4 become horizontal in the clamped state, and as shown in Figure 3, they lift upward and move closer to each other in the unclamped state. Here, "horizontal" does not mean strictly horizontal; it does not have to be strictly horizontal as long as it achieves the same effect.

[0011] Arm 3 is displaced in conjunction with the drive of handle 4. Arm 3 is the part for pressing the workpiece W and is configured to rotate between a clamped state in which the workpiece W is pressed and an unclamped state in which the pressing is released. A clamp head 30 for pressing the workpiece W is provided at the tip of arm 3.

[0012] The handle 4 is a part that is driven by operation to operate the arm 3 and is used for switching between the clamped state and the unclamped state. The handle 4 may be configured as a gripping part (hereinafter also referred to as an operation receiving part) for receiving an operating force (i.e., manual operation) by an operator.

[0013] The handle 4 includes a cover 41 that covers a part of the handle 4. In this embodiment, the cover 41 is disposed at a position corresponding to the operation receiving part. Specifically, a plastic cover 41 is attached so as to cover the outer periphery of the longitudinal end 4a of the handle 4. A part of the handle 4 that is not covered by the cover 41 and where the handle body is exposed is referred to as an uncovered part 42. The cover 41 improves the grip during operation and protects the handle body.

[0014] The support part 2 is a part for fixing the clamp device 1 to a workbench, a jig, a machine body, or the like. In this embodiment, the arm 3 and the handle 4 are rotatably supported with respect to the support part 2 directly or via other parts, but the specific shape and structure of the support part 2 are not limited thereto.

[0015] Here, the support part 2, the arm 3, and the handle 4 are rotatably connected to each other via a fulcrum part 6 formed by a connecting member such as a screw, a bolt, or a pin, and constitute a toggle mechanism. The fulcrum part 6 refers to a rotatable connecting part constituted by a hole part formed with holes for rotation shafts provided in the arm 3, the handle 4, and the support part 2, and a connecting member inserted through these holes.

[0016] The fulcrum part 6 is provided at a plurality of locations. For example, a total of four fulcrum parts 6 are provided between the support part 2 and the arm 3, between the support part 2 and the handle 4, and between the arm 3 and the handle 4, etc.

[0017] [1-2. Holding part] The clamp device 1 includes an arm-side holding part 51 and a handle-side holding part 61 that can be attracted to each other by magnetic force.

[0018] The arm - side holding part 51 is a magnetic body arranged on the arm 3, and the handle - side holding part 61 is a magnet arranged on the handle 4. Here, the term "arranged" includes integral formation. In this specification, a magnet refers to something that generates a magnetic force. A magnetic body refers to a member having the property of being attracted by a magnet.

[0019] In this embodiment, the arm - side holding part 51 is integrally formed with the arm 3. Specifically, the arm body is formed of a magnetic body, and the arm 3 itself is used as the arm - side holding part 51.

[0020] Thereby, in the unclamped state, when the arm 3 and the handle 4 are lifted upward and approach each other, the arm - side holding part 51 and the handle - side holding part 61 approach each other, and due to the magnetic force acting between the arm - side holding part 51 and the handle - side holding part 61, the arm 3 is attracted toward the handle 4 side.

[0021] FIG. 4 is a partially enlarged view showing the handle - side holding part 61 of the clamp device 1 in the unclamped state shown in FIG. 3 from the front side. In FIG. 4, for the sake of clearly showing the handle - side holding part 61, the illustration of the arm 3 is omitted.

[0022] In this embodiment, the handle - side holding part 61 is a magnet having a threaded hole. The threaded hole is used for fixing the handle - side holding part 61. The handle - side holding part 61 is fixed to a plate - shaped mounting seat 71 having a shape straddling the handle 4. The mounting seat 71 is a mounting part for holding the handle - side holding part 61 in a predetermined position and a predetermined arrangement state with respect to the arm 3, and is arranged on the handle 4.

[0023] In this embodiment, the mounting seat 71 is fixed to the handle 4 by welding. A handle-side holding portion 61, which is a magnet, is fixed to the mounting base 71 by screw fastening with a screw 81. The mounting base 71 is fixed at a predetermined angle to the arm 3 (i.e., in a predetermined position and arrangement) such that the handle-side holding portion 61 and the arm 3 (i.e., the arm-side holding portion 51 in this embodiment) face each other when the arm is unclamped. Here, "facing" refers to a positional relationship (i.e., arrangement) in which magnetic force can act, and it is preferable that the handle-side holding portion 61 and the arm-side holding portion 51 are substantially parallel.

[0024] Thus, the arm-side holding portion 51 and the handle-side holding portion 61 have a holding function that attracts and holds the arm 3 and handle 4, which are lifted upward and approaching each other in the unclamped state, using magnetic force.

[0025] [1-3. Effects] The first embodiment described in detail above provides the following effects. (1a) According to the clamping device 1 of the first embodiment, in the unclamped state, the arm 3 and the handle 4 are raised upward and move closer together. In the unclamped state, the arm 3 is normally held in the raised position by rotational resistance at the pivot point 6, etc. According to this embodiment, in the unclamped state, the raised position of the arm 3 can be stably held by the arm-side holding part 51 and the handle-side holding part 61.

[0026] Incidentally, even when the clamping mechanism is unclamped, there is a risk that the arm 3 may rotate toward the clamped position. For example, this could occur due to wear of the pivot point 6, variations in the mounting angle, or changes in the weight or center of gravity of the clamping head 30, resulting from the use of the clamping device 1.

[0027] According to this embodiment, even when a decrease in rotational resistance occurs, the raised position of the arm 3 in the unclamped state is auxiliaryly maintained by magnetic force. As a result, the attachment and detachment of the workpiece W can be performed smoothly, interference and collision with the arm 3 during work can be suppressed, and the safety and reliability of the clamping device 1 and peripheral equipment can be improved.

[0028] Furthermore, depending on the operating environment, the handle-side holding portion 61 (i.e., the magnet) may attract foreign matter such as welding spatter or metal shavings, and this foreign matter may become trapped between the arm-side holding portion 51 and the handle-side holding portion 61. However, since magnetic force acts on any of this foreign matter, the holding function of the arm 3 can be maintained even in such cases.

[0029] (1b) By arranging a mounting base 71 that supports the handle-side holding portion 61 (i.e., the magnet), the mounting position and angle of the handle-side holding portion 61 relative to the arm 3 can be stabilized, and the magnetic force can be applied to the arm 3 more reliably when the arm is unclamped.

[0030] (1c) The handle-side holding portion 61 (i.e., the magnet) is positioned opposite the arm 3 containing the magnetic material when the arm is unclamped, so that the position of the arm 3 can be stably held when the arm is unclamped by the magnetic attraction.

[0031] (1d) The arm-side holding portion 51 is made of a magnetic material. This allows for sufficient magnetic holding action even with a simple configuration in which the handle-side holding portion 61 (i.e., a magnet) is provided only on the handle 4.

[0032] (1e) By positioning the mounting base 71 on the handle 4, the magnetic force from the handle-side holding portion 61 of the mounting base 71 that affects the workpiece W can be suppressed compared to when it is positioned on the arm 3. (1f) By providing the mounting base 71 as a separate component on the handle 4, the magnetic holding function of the handle-side holding part 61 (i.e., the magnet) can be easily added, regardless of the material or shape of the handle 4.

[0033] In this disclosure, "screw fastening" refers to a method of fixing members using screws, bolts, etc., and "joining or fixing" is not limited to screw fastening, but broadly includes methods of joining members together, including welding, bonding, crimping, press-fitting, integral molding, etc.

[0034] In the following description, for the convenience of explaining each embodiment, the arm-side holding parts may be distinguished and referred to as 51, 52, 53, etc., but all of these correspond to the "arm-side holding part". Similarly, the handle-side holding parts may be distinguished and referred to as 61, 62, etc., but all of these correspond to the "handle-side holding part". The mounting seats may be distinguished and referred to as 71, 72, 73, etc., but all of these correspond to the "mounting seat". The housing parts may be distinguished and referred to as 74, 75, etc., and the housing spaces may be distinguished and referred to as 740, 750, etc., but all of these correspond to the "housing part" and "housing space", respectively.

[0035] [2. Second Embodiment] In the following embodiments, the basic configuration is the same as in the first embodiment, so the differences will be explained. Note that the same reference numerals as in the first embodiment indicate the same components, and refer to the preceding description.

[0036] In the first embodiment, the arm-side holding portion 51 was integrated with the arm 3, but in the second embodiment, the arm-side holding portion 52 shown in Figures 5A and 6A is separate from the arm 3, which is a difference from the first embodiment.

[0037] As shown in Figure 5A, in this embodiment, a magnetic suction plate is arranged on the arm 3 as an arm-side holding portion 52. The arm-side holding portion 52 is plate-shaped and is fixed to the arm 3 by welding or the like (i.e., joining or fixing). As a result, the arm 3 has a configuration that includes the arm-side holding portion 52.

[0038] In this embodiment, the arm-side holding portion 52 is fixed so as not to be at an angle to the arm 3, and faces the handle-side holding portion 61 (i.e., the magnet) attached to the mounting seat 72 by the handle 4, so that magnetic force can act on it when it is unclamped. This creates an adsorption surface on the arm 3 that is attracted by magnetic force.

[0039] In this embodiment, the handle-side holding portion 61 has a plurality (2) magnets 61 (i.e., 61a, 61b) on the mounting base 72, as shown in Figure 6A. However, the number of magnets on the handle-side holding portion 61 is not limited to this, and may be one, or three or more.

[0040] The second embodiment described in detail above achieves the effects (1a) to (1f) of the first embodiment described above, and further achieves the following effects. (2a) In the clamping device 1 of the second embodiment, since the arm-side holding portion 52 (i.e., magnetic adsorption plate) is arranged on the arm 3 side, a relatively large surface area can be secured in the unclamped state with respect to the handle-side holding portion 61 (i.e., magnet). As a result, the magnetic attraction effect is further improved, and the arm 3 can be held more stably in the raised position in the unclamped state. In particular, when the handle-side holding portion 61 has multiple magnets (61a, 61b), the posture of the arm 3 can be held more stably while suppressing the bias of the attraction effect.

[0041] (2b) By providing the arm-side holding part 52 (magnetic suction plate) as a separate component from the arm 3, the magnetic holding function can be easily added or improved, regardless of the material or shape of the arm 3 body.

[0042] [3. Third Embodiment] The third embodiment is based on the first embodiment, with modifications to the mounting configuration of the arm-side holding portion 51 and the handle-side holding portion 61.

[0043] In this embodiment, as shown in Figures 5B and 6B, the magnet serving as the handle-side holding portion 61 is directly fixed to the handle 4 by screw fastening with a screw 81. In this embodiment, the mounting seat 73 is not a separate, flat plate-shaped component joined to or fixed to the handle 4, as described above with the mounting seat 71. Instead, as shown in Figure 6B, it is integrally formed with the handle 4 as a structure having screw holes 85 for screw fastening. In this embodiment, the mounting seat 73 is located on the uncovered portion 42 of the handle 4. In other words, the handle-side holding portion 61 is fixed to the mounting seat 73 located on the uncovered portion 42 of the handle 4.

[0044] On the other hand, on the arm 3 side, a magnetic suction plate is provided as the arm-side holding portion 53 at a position opposite to the handle-side holding portion 61 (magnet). In this embodiment, the suction plate as the arm-side holding portion 53 is positioned so as to face the handle-side holding portion 61 when unclamped, and at a predetermined angle with respect to the longitudinal direction of the arm 3.

[0045] The third embodiment described in detail above achieves the effects (1a) to (1e) of the first embodiment described above, and further achieves the following effects. (3a) In the clamp device 1 of the third embodiment, the handle-side holding part 61 (magnet) is directly fixed to the handle 4 by screw fastening, which simplifies the installation of the magnet. As a result, the assembly workability of the clamp device 1 can be improved.

[0046] (3b) Since the arm-side holding portion 53 is provided as an adsorption plate that is at an angle to the arm 3, an appropriate facing state with the handle-side holding portion 61 (magnet) can be obtained in the unclamped state. That is, the adsorption surface of the magnet and the surface of the adsorption plate can be attracted in a state that is close to surface contact with the magnet in a state that is nearly parallel, and the magnetic attraction stability can be improved.

[0047] (3c) Since the handle-side holding portion 61 is fixed to the mounting seat 73 located on the non-cover portion 42 of the handle 4, the handle-side holding portion 61 can be firmly and precisely positioned and fixed to the main body of the handle 4 (i.e., the rigid portion). As a result, even when loads are applied during repeated clamping operations or magnetic attraction, the handle-side holding portion 61 can be prevented from falling off or shifting position.

[0048] [4. Fourth Embodiment] The fourth embodiment is based on the first embodiment, with a modified mounting configuration for the handle-side holding portion 62.

[0049] In this embodiment, as shown in Figures 5C and 6C, the handle-side holding portion 62 differs from the handle-side holding portion 61 described above in that it is a magnet without a screw hole. The magnet, which serves as the handle-side holding portion 62, is fitted into a housing portion 74 having a housing space 740, which is welded to the handle 4 (i.e., joined or fixed).

[0050] The housing portion 74 is located in the uncovered portion 42 of the handle 4 (see Figure 2). The housing portion 74 has an inner circumferential surface that conforms to the outer circumferential shape of the handle-side holding portion 62. The handle-side holding portion 62 is housed within the housing space 740 and is fitted into the housing space 740 either without gaps or with only a small gap between them.

[0051] The handle-side retaining portion 62 is fitted into the housing space 740 and fixed to the housing portion 74 by screwing it in using screws 82 inserted from the side or top of the housing portion 74. The housing space 740 is formed as a recess (i.e., a bottomed cylindrical shape).

[0052] The housing portion 74 is positioned on the handle 4 at a predetermined angle such that the handle-side holding portion 62 faces the arm 3 when the handle is unclamped. The housing portion 74 may be positioned on the handle 4 by means of welding (i.e., joining or fixing), or integral molding.

[0053] On the other hand, on the arm 3 side, a configuration including a magnetic material is arranged as an arm-side holding portion at a position opposite to the handle-side holding portion 62. The arm-side holding portion may be formed integrally with the arm 3 body which is made of a magnetic material, or a separate member made of a magnetic material may be joined or fixed to the arm 3. In this embodiment, similar to the first embodiment, an arm-side holding portion 51 which is formed integrally with the arm 3 body which is made of a magnetic material is used.

[0054] According to the fourth embodiment described in detail above, the effects (1a) to (1e) of the first embodiment described above are achieved, and furthermore, the following effects are achieved. (4a) In the clamp device 1 of the fourth embodiment, the magnet as the handle-side holding part 62 is fitted into a housing space 740 formed in the housing part 74 and fixed by screwing, bonding, or press-fitting into the housing part 74 from the side or top of the housing part 74. With this configuration, a magnet that does not have a screw hole, such as the handle-side holding part 62, can be stably held (i.e., fixed) on the handle 4 side with a simple configuration. This increases the versatility of the magnet used as the handle-side holding part 62.

[0055] (4b) The handle-side holding portion 62 is supported such that its outer circumferential surface is in contact with the inner circumferential surface of the housing space 740 all around or at multiple points. As a result, in addition to the fastening force by the screw 82, a physical restraining force from the wall surface of the housing portion 74 acts on it. This restricts the displacement of the handle 4 in the extending direction and in directions perpendicular thereto. In other words, even if the handle-side holding portion 62 is fixed by only one screw 82, rattling caused by impacts during magnetic attraction and displacement due to rotation are suppressed. As a result, a stable holding state can be maintained.

[0056] (4c) Furthermore, because the housing portion 74 is positioned at a predetermined angle, the handle-side holding portion 62 and the arm-side holding portion 51 can be properly positioned facing each other in the unclamped state, and magnetic attraction can be stably applied.

[0057] [5. Fifth Embodiment] The clamp device 1 of the fifth embodiment will be described with reference to Figures 7(A) and (B). The fifth embodiment differs from the fourth embodiment in the mounting structure of the handle-side holding portion 62 (i.e., the magnet).

[0058] As shown in Figure 7(A), the housing portion 75, which has a housing space 750 for accommodating the handle-side holding portion 62, is integrally formed with the cover 41 of the handle 4. In other words, the housing portion 75 is located on the cover 41 side of the handle 4.

[0059] The housing portion 75 has an inner circumferential surface that conforms to the outer circumferential shape of the handle-side holding portion 62. The handle-side holding portion 62 is housed within the housing space 750 and fitted into the housing space 750 without any gaps, or with only a small gap. Even if the handle-side holding portion 62, which is a magnet, is fitted into the housing space 750 without any gaps and fixed with only one screw 82, rattling of the handle-side holding portion 62 is suppressed.

[0060] The handle-side retaining portion 62 is fitted into the housing space 750 and fixed to the housing portion 75 by screwing it in using screws 82 inserted from the side or top of the housing portion 75. The handle-side retaining portion 62 may also be press-fitted and fixed to the housing portion 75.

[0061] The housing section 75 (i.e., the cover 41) has a recessed (i.e., bottomed cylindrical) housing space 750 that exposes the suction surface of the handle-side holding section 62 housed in the housing section 75 to the outside.

[0062] According to the fifth embodiment described in detail above, the effects (4a) to (4b) of the fourth embodiment described above are achieved, and furthermore, the following effects are achieved. (5a) In the clamp device 1 of the fifth embodiment, the handle-side holding portion 62 is held on the cover 41 side, so welding processes to the handle body as in the fourth embodiment can be omitted, and manufacturing costs can be reduced. In addition, the housing portion 75 can be formed at the same time as the cover 41 is resin molded, so it is excellent in terms of mass productivity.

[0063] (5b) Since the handle-side holding portion 62 is surrounded by the cover 41, contact with foreign objects from the outside is suppressed, and damage to the magnet can be prevented. (5c) The cover 41 in this embodiment may be configured to be detachable from the handle 4. Since the cover 41 is detachable from the handle 4, the handle-side retaining part 62 can be easily attached to and detached (i.e., replaced) together with the cover 41.

[0064] [6. Other Embodiments] Although embodiments of this disclosure have been described above, this disclosure is not limited to the embodiments described above and can be implemented in various modified forms.

[0065] The clamping device 1 is not limited to the configuration described above, and may be configured as follows, for example. (1) The mounting seats 71, 72 and housing portion 74 are not limited to being plate-shaped with substantially uniform thickness, but may also be wedge-shaped (plate-shaped with varying thickness).

[0066] (2) The fixing of the mounting seats 71, 72 and the housing 74 to the handle 4 is not limited to welding, and any means of joining or fixing such as screwing, bonding, crimping, etc. may be selected. (3) The handle-side holding portion 61 may be fixed to the housing portion 74 and housing portion 75 by screws 81.

[0067] (4) The handle-side holding parts 61 and 62 (magnets) may be one or multiple. By changing the number, size, and magnetic force of the magnets, the holding force of the arm 3 in the unclamped state may be adjusted as appropriate according to the size of the device and the operating environment.

[0068] (5) Of the surfaces of the handle-side holding parts 61 and 62 (magnets), the surface facing the arm-side holding parts 51, 52, and 53 is not limited to a flat surface, but may also be a curved surface. (6) The arm 3 is not limited to being composed entirely of a magnetic material (such as steel). For example, a part of the arm body, which is made of a non-magnetic material (such as aluminum or resin), may have arm-side holding parts 51, 52, and 53 made of a magnetic material attached to it by joining or fixing.

[0069] (7) In the embodiments described above, the arm-side holding parts 51, 52, and 53 were made of magnetic material and the handle-side holding parts 61 and 62 were made of magnets, but the invention is not limited to these. The material and arrangement of each holding part can be changed as appropriate, as long as magnetic attraction is possible.

[0070] (8) In the above embodiment, an example of manually operating the handle 4 was described, but the handle 4 may also be configured to be automatically driven by connecting an external drive source (such as a cylinder). (9) In the above-described embodiment, the shape of the accommodation spaces 740 and 750 is not limited to a recessed shape (bottomed cylindrical shape), but may be a through hole.

[0071] (10) Multiple functions of one component in the above embodiment may be realized by multiple components, or one function of one component may be realized by multiple components. Also, multiple functions of multiple components may be realized by one component, or one function realized by multiple components may be realized by one component. Furthermore, some of the configuration of the above embodiment may be omitted. Also, at least some of the configuration of the above embodiment may be added to or replaced with the configuration of other above embodiments.

[0072] <Terminology correspondence> The clamping device 1 corresponds to a toggle-type clamping device, and the mounting seats 71, 72, and 73 correspond to the mounting parts. [Explanation of symbols]

[0073] 1: Toggle clamp device, 3: Clamp arm (arm), 30: Clamp head, 4: Handle, 41: Cover, 42: Uncovered part, 51, 52, 53: Arm-side holding part, 61, 62: Handle-side holding part, 71, 72, 73: Mounting base, 74, 75: Storage part, 740, 750: Storage space, 81, 82: Screw, W: Workpiece.

Claims

1. A toggle-type clamping device, Arm (3) and Handle (4) and Arm-side holding parts (51, 52, 53) and handle-side holding parts (61, 62) are mutually attracted by magnetic force, Equipped with, The arm and the handle become horizontal in the clamped state and lift upward and move closer to each other in the unclamped state. The arm-side holding portion (51, 52, 53) has a magnetic material included in the arm, The handle-side holding portion (61, 62) has a magnet included in the handle, In the unclamped state, the arm-side holding portion and the handle-side holding portion are positioned in a positional relationship that allows them to be attracted by magnetic force. Toggle-type clamping device (1).

2. A toggle clamp device according to claim 1, The handle is provided with mounting portions (71, 72, 73) that support the handle-side holding portions (61, 62). Toggle-type clamping device.

3. A toggle clamp device according to claim 1, The handle is provided with housing portions (74, 75) that form a housing space (740, 750) for housing the handle-side holding portions (61, 62), The handle-side holding portion is fixed in a state where it is housed within the storage space. Toggle-type clamping device.

4. A toggle-type clamping device according to claim 3, The housing portions (74, 75) form the housing spaces (740, 750) having inner circumferential surfaces corresponding to the outer circumferential shape of the handle-side holding portions (61, 62). The handle-side retaining portion is fixed to the housing portion by screws while it is housed within the housing space. Toggle-type clamping device.

5. A toggle-type clamping device according to claim 4, The handle is equipped with a cover (41) that covers a part of the handle. The housing portion (74) is plate-shaped in which the housing space (740) is formed, and is positioned in the non-cover portion (42) of the handle where the cover is not located. Toggle-type clamping device.

6. A toggle-type clamping device according to claim 4, The handle is equipped with a cover (41) that covers a part of the handle. The housing section (75) in which the housing space (750) is formed is configured integrally with the cover. Toggle-type clamping device.

7. A toggle-type clamping device according to claim 6, The cover, together with the housing, is removable from the handle. Toggle-type clamping device.

8. A toggle clamp device according to any one of claims 1 to 7, In the unclamped state, the handle-side holding parts (61, 62) and the arm-side holding parts (51, 52, 53) are arranged to face each other. Toggle-type clamping device.

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