Mounting kit and mounting method of fastener

Abstract

The invention relates to a mounting kit (10) and a mounting method for mounting a fastener (12) into a structure. The installation kit comprises an installation head (100) and an installation tool (200), the installation kit further comprises an interface device (300), and the interface device comprises an interface body (302) which comprises a through hole (316); the compression spring (306) protrudes out of the interface main body; a contact lever (308) capable of sliding in the through hole (316); an assembly ring (304) assembled to the interface body (302); the interface main body is fixed on an installation tool (200), and the assembly ring is installed on the installation head; and the front end of the spring (306) is in contact with the mounting head. The mounting kit is movable between the two configurations of the interface device.

Description

Technical Field

[0001] This invention relates to the assembly of blind hole fasteners, applicable to applications where operation can only be performed from one side of the structure, and particularly to a fastener mounting kit and mounting method. Background Technology

[0002] This invention relates to an installation kit for mounting fasteners into a structure. The installation kit includes an installation head comprising: a hollow body extending along a main axis and having a flange at its rear end; and a first movable element disposed within the hollow body and movable relative to the hollow body; the first movable element being adapted to mate with a fastener. The installation kit further includes an installation tool comprising: a housing having a front opening aligned along the main axis and a rear opening; a second movable element extending into the housing and rotatable and / or translatable relative to the housing; the second movable element connected to the first movable element to drive the first movable element to translate and / or rotate; an electric motor; an output shaft of the electric motor; and a circuit connected to the electric motor; the circuit including a movable switch switchable between an open and closed state; a transmission device disposed within the housing and connected to the output shaft, the transmission device being capable of driving the second movable element to rotate and / or translate under the action of rotation of the output shaft; and a power supply connected to the circuit for supplying power to the electric motor.

[0003] Such installation kits are described in particular in the European patent document EP3539685 under the applicant's name.

[0004] The way this installation kit is operated may pose a musculoskeletal risk (TMS) to the operator's index finger, as the operator needs to press and release the movable switch—usually a trigger on the handle—multiple times per minute to complete the installation of multiple fasteners. Summary of the Invention

[0005] To address the aforementioned problems, the present invention aims to provide an installation kit of the aforementioned type, further comprising an interface device including: an annular interface body disposed along a main axis, the interface body including: a front side, substantially perpendicular to the main axis; and a through hole parallel to the main axis and opening on the front side; at least one first compression spring fixed to the interface body and protruding beyond the front side; a contact rod slidable within the through hole of the interface body, the contact rod extending between a front end and a rear end, the rear end capable of driving a circuit switch to a closed or open state; and an assembly ring assembled to the interface body and disposed along the main axis, the assembly ring including: a shoulder, substantially perpendicular to the main axis; and an inner cavity whose boundary is axially defined by the shoulder and the front side of the interface body. The interface body is fixed to the front end of the housing of the installation tool, and the assembly ring is mounted on the rear end of the hollow body of the installation head; the flange of the hollow body is located inside the cavity of the assembly ring; the front end of the first compression spring contacts the flange; the installation kit is configured such that: in the first configuration of the installation kit, the flange of the hollow body of the installation head contacts the shoulder of the assembly ring; the front end of the contact rod protrudes axially beyond the front of the interface body; the first compression spring is in a first compressed state; the switch is in an open state; in the second configuration of the installation kit, the flange of the hollow body of the installation head contacts the front of the interface body; the front end of the contact rod contacts the flange; the first compression spring is in a second compressed state, which is more compressed than the first compressed state; and the switch is closed.

[0006] According to other advantages of the invention, the installation kit has one or more of the following features, which can be used individually or in various technically feasible combinations: - A drive arm is provided at the rear end of the contact rod of the interface device; in the second configuration, the drive arm contacts the switch and keeps the switch closed; - The mounting kit includes a second compression spring arranged parallel to the main axis, having a first end and a second end. The first end is fixed to the rear end of the contact rod, and the second end is fixed to the housing of the mounting tool. When the second compression spring is in a first compressed state, the drive arm of the contact rod is a certain distance away from the switch. When the second compression spring is in a second compressed state, which is more compressed than the first compressed state, the drive arm contacts the switch to keep the switch closed. - The interface device includes a plurality of first springs arranged around the main axis, each first spring being fixed to the interface body and protruding beyond the front of the interface body; - The front end of the contact rod is provided with an internal threaded hole; the interface device also includes a threaded pin disposed in the internal threaded hole, such that in the second configuration of the mounting kit, the threaded pin contacts the flange of the hollow body of the mounting head; - This type of fastener is a rod extending along the fastening axis and having a head; the front end of the hollow body of the mounting head includes: a front opening; and a lip disposed around the front opening, which is capable of contacting a surface surrounding the head of the rod and substantially perpendicular to the fastening axis; - This type of fastener also includes a sleeve arranged around the rod, the sleeve being equipped with a flange capable of contacting the head of the rod, the flange including a support surface perpendicular to the fastening axis; and the lip of the hollow body can coincide with the support surface of the sleeve flange; - This type of fastener also includes a gripping element that projects axially beyond the head of the rod; the front opening of the mounting head hollow body is adapted to receive the gripping element; and the first movable element includes a retaining device for clamping the gripping element.

[0007] The present invention also relates to a method for installing a fastener using the aforementioned mounting kit, the fastener comprising a rod extending along a fastening axis and having a head, the method comprising the following steps: inserting the rod of the fastener into a drilled hole in a structure, the drilled hole leading to an operable surface of the structure, the rod head being located on one side of the operable surface; pressing the lip of the hollow body of the mounting head axially against the structure; engaging a first movable element of the mounting head with the rod of the fastener; then applying a forward axial force to the mounting tool to change the mounting kit from a first configuration to a second configuration; subsequently activating the motor of the mounting tool to drive the output shaft to rotate, thereby causing the first and second movable elements to translate and / or rotate; then stopping the forward axial force applied to the mounting tool to change the mounting kit from the second configuration to the first configuration.

[0008] According to other advantages of the invention, the installation method has one or more of the following features, which can be used individually or in various technically feasible combinations: - The sleeve of the fastener can be inserted into the drilled hole of the structure at the same time as the rod; when the lip of the hollow body of the mounting head is axially pressed against the structure, the lip contacts the support surface of the sleeve flange; - The engagement of the first movable element of the mounting head with the fastener refers to the gripping element of the fastener being held by the retaining device of the first movable element. Attached Figure Description

[0009] The present invention will be more clearly understood through the following description, which is only a non-limiting example and should be read in conjunction with the accompanying drawings. The drawings include: Figure 1 This is a side view of the installation kit according to one embodiment of the present invention; Figure 2 , Figure 3 yes Figure 1 Partial cross-sectional view of the installation kit; Figure 4 This is a cross-sectional view of the mounting head according to the first embodiment of the present invention. The mounting head belongs to... Figures 1 to 3 The installation kit shown; Figure 5 This is a cross-sectional view of the mounting head according to the second embodiment of the present invention; Figure 6 yes Figure 5 Exploded view of the mounting head; Figure 7 For use Figures 1 to 3 The diagram shows a cross-sectional view of the fasteners installed using the mounting kit. Detailed Implementation

[0010] Figure 1 An installation kit 10 according to one embodiment of the invention is shown. The installation kit 10 is particularly suitable for mounting fasteners 12 (see...) Figure 1 , Figure 4 and Figure 7 Installed into structure 14 (see Figure 4 The installation of Package 10 will be detailed below.

[0011] Fastener 12 (see) Figure 7 In particular, it includes a fastening rod 16. The fastening rod 16 includes a solid rod body 18 extending along the fastening axis 20 and a head 22 disposed at one end of the rod body. In the illustrated embodiment, the solid rod body 18 is cylindrical and the head 22 is countersunk.

[0012] In the illustrated embodiment, the fastening rod 16 is a threaded pin and also includes an externally threaded section 24 aligned with the solid rod body 18 and located on the opposite side of the head 22. In the following description, the fastening rod 16 will be referred to as "pin 16".

[0013] In the illustrated embodiment, the fastener 12 further includes a gripping element 26, a fracture groove 28, and a sleeve 30.

[0014] The gripping element 26 is integrated with the pin 16 and includes a gripping rod 32 and a gripping knob 34.

[0015] The gripping bar 32 extends along the fastening axis 20, starting from the head 22 of the pin 16, and is located on the opposite side of the solid bar 18.

[0016] The gripping knob 34 is located at one end of the gripping lever 32, on the opposite side of the head 22. The gripping knob 34 forms a radial protrusion relative to the gripping lever 32.

[0017] Preferably, the gripping knob 34 includes a first drive surface 36 arranged around the fastening axis 20. The first drive surface 36 is provided, for example, with a spline groove parallel to the fastening axis 20.

[0018] The gripping element 26 has a maximum radial dimension 38 along a direction perpendicular to the fastening axis 20. In particular, the maximum radial dimension 38 corresponds to the radial dimension of the gripping knob 34.

[0019] A fracture groove 28 is provided between the head 22 of the pin 16 and the gripping rod 32. As described below, the fracture groove 28 is capable of fracturing when a fracture torque is applied around the fastening axis 20, thereby separating the pin 16 and the gripping element 26 from each other.

[0020] The sleeve 30 includes: a tubular body 40, a flange 42, and an internally threaded section 44.

[0021] A tubular body 40 is fitted around the solid shaft 18 of the pin 16 along the fastening axis 20. A flange 42 is adjacent to the first end of the tubular body 40 and is intended to contact the pin head 22. In the illustrated embodiment, the inner surface of the flange 42 is frustoconical and substantially complements the countersunk surface of the head 22.

[0022] The flange includes a support surface 46, which is perpendicular to the fastening axis 20 and forms one end of the flange.

[0023] The internal threaded section 44 is adjacent to the second end of the tubular body 40 and is designed to mate with the external threaded section 24 of the threaded pin.

[0024] In the illustrated embodiment, the tubular cylindrical body 40 is provided with a deformable region 48 (see...). Figure 4 ( ), near the internal thread section 44. As described below, this deformable region 48 is used to form a radial flange when fastener 12 is installed.

[0025] For a fastener 12 similar to the one described above, see the applicant’s patent document EP2894356.

[0026] Structure 14 includes a first surface 50 and a second surface 52, which are generally parallel. In the illustrated embodiment, the first surface 50 and the second surface 52 are planar.

[0027] The structure 14 also has a drilled hole 54 that leads to the first surface 50 and the second surface 52. On the first surface 50 side, the drilled hole 54 has a countersunk hole for receiving the flange 42 of the sleeve 30.

[0028] Figure 1 In the illustrated embodiment, the installation kit 10 includes: an installation head 100, an installation tool 200, and an interface device 300 between the installation head 100 and the installation tool 200.

[0029] In the illustrated embodiment, the mounting head 100, the interface device 300, and the tool 200 are assembled together, as will be described later; and they are aligned along the first axis / main axis 102. In the following description, the mounting head 100, the mounting tool 200, and the interface device 300 themselves will be described with reference to the first axis 102.

[0030] Mounting head 100 is found in Figure 1 and Figures 3 to 4 . Figure 5 and Figure 6 A variant embodiment of the mounting head 400 is shown, which can be used to replace the mounting head 100 in the mounting kit 10.

[0031] Mounting heads 100 and 400 will be described together below. Identical parts will be designated with the same reference numerals. Mounting head 400 is also considered to extend along the first axis 102.

[0032] Mounting heads 100 and 400 include: a hollow body 110 and 410; a sleeve 112 and 412; a retaining device 114 and 414; a first tubular element 115 and 415; and a second tubular element 116 and 416. In the illustrated embodiment, mounting heads 100 and 400 further include a first compression spring 118 and a second driving surface 119 and 419.

[0033] Hollow bodies 110 and 410 extend along a first axis 102, located between a first end and a second end, hereinafter referred to as the "front end" and the "rear end," respectively. In the illustrated embodiment, hollow bodies 110 and 410 have an external radial surface that is substantially cylindrical of revolution.

[0034] The front end of the hollow bodies 110, 410 includes a first front opening 120 for receiving the gripping element 26 of the fastener 12. In the subsequent description of the mounting kit 10, "front" refers to the direction toward the fastener 12 fitted to the mounting head 100.

[0035] In the illustrated embodiment, the front end of the hollow bodies 110 and 410 further includes a front lip 122, arranged around the first front opening 120 and facing outwards from the hollow body. The front lip 122 forms a flat crown-shaped structure with its plane perpendicular to the first axis 102.

[0036] Preferably, the flat crown-shaped structure formed by the front lip 122 substantially coincides with the support surface 46 of the sleeve flange 42 of the fastener 12. In other words, the front lip 122 and the support surface 46 have closely spaced annular surfaces.

[0037] In a variant not shown, the flat crown-shaped structure formed by the anterior lip 122 may be arranged around the support surface 46 of the flange 42. In other words, the outer diameter of the anterior lip 122 is larger than the outer diameter of the support surface 46.

[0038] In the illustrated embodiment, the front end of the hollow bodies 110 and 410 further includes a limiting member 124 and 424, which is arranged around the first front opening 120 and faces the interior of the hollow body.

[0039] The rear end of the hollow bodies 110 and 410 includes a flange 126 that protrudes radially relative to the outer radial surface of the hollow body.

[0040] Sleeves 112 and 412 are disposed inside hollow bodies 110 and 410, extending along the first axis 102 between the front and rear ends. The front end of sleeves 112 and 412 is provided with a second front opening 130, which is aligned along the axis with the first front opening 120 of the hollow body.

[0041] In the illustrated embodiment, the front end of the sleeves 112 and 412 is further provided with an inner cavity 131 and 431 and an inner annular surface 132 and 432.

[0042] The radial dimensions of the inner cavities 131 and 431 are strictly larger than the radial dimension of the second front opening 130. The inner annular surfaces 132 and 432 are arranged around the second front opening 130 and are located axially between the second front opening 130 and the inner cavities 131 and 431.

[0043] In the illustrated embodiment, the inner annular surfaces 132 and 432 are concave frustum-shaped and gradually expand from the second front opening 130 toward the inner cavities 131 and 431.

[0044] The rear end of sleeves 112, 412 includes a connecting element 133, 433 that connects to a component of installation tool 200, as described below. The connecting element 133, 433 includes, for example, threads provided on the inner surface of the sleeve.

[0045] In optional configurations, such as Figure 3-4 In the mounting head 100 shown, the connecting element 133 includes an intermediate ring 134 for compensating for the diameter difference between the sleeve and the mounting tool.

[0046] Sleeves 112 and 412 can translate and rotate relative to hollow bodies 110 and 410, as detailed below.

[0047] The retaining devices 114, 414 are able to lock the gripping element 26 of the fastener 12 in the second front opening 130 of the sleeve 112, 412.

[0048] Preferably, the holding devices 114, 414 include at least two grippers 135, 435, and more preferably, at least three grippers. The grippers 135, 435 are at least partially disposed within the sleeves 112, 412 and are arranged at an angle around the first axis 102. Each gripper has a hook 136 at its front end.

[0049] In the illustrated embodiment, each gripper includes an outer annular surface 138, 438 disposed near the hook portion 136. More specifically, in the illustrated embodiment, each outer annular surface 138, 438 is shaped as a frustum that complements the inner annular surfaces 132, 432 of the sleeves 112, 412.

[0050] Grippers 135 and 435 can be in an unfolded configuration (not shown) and a retracted configuration (not shown). Figure 3-4 and Figure 5-6 The hooks 136 move radially relative to the hollow bodies 110 and 410, with each hook 136 being closer to the first axis 102 in the retracted configuration than in the unfolded configuration.

[0051] The grippers 135 and 435 are locked to prevent rotation relative to the sleeves 112 and 412, which are adapted to drive the grippers to translate and rotate relative to the hollow bodies 110 and 410.

[0052] The grippers 135 and 435 can translate between the front and rear positions within the sleeves 112 and 412.

[0053] When the grippers 135 and 435 are in the forward position, they are held in a retracted configuration by the sleeves 112 and 412. In the illustrated embodiment, when the grippers are in the forward position, their outer annular surfaces 138 and 438 are in contact with the inner annular surfaces 132 and 432 of the sleeve, thereby keeping the grippers in a retracted configuration.

[0054] When the jaws 135 and 435 are in the rear position, the outer annular surfaces 138 and 438 of each jaw maintain an axial distance from the inner annular surfaces 132 and 432 of the sleeve. The jaws are able to move radially away from each other within the inner cavities 131 and 431 of the sleeve.

[0055] The retaining devices 114 and 414 will be described in detail below.

[0056] First tubular elements 115 and 415 extend along the first axis 102 into sleeves 112 and 412, respectively, with the extension section located between the open front end and the open rear end. The front end of the first tubular elements 115 and 415 is provided with a support surface for contacting the inner surfaces of the grippers 135 and 435, details of which will be described later. The first tubular elements 115 and 415 also include a support surface for the first compression spring 118.

[0057] exist Figure 3 and Figure 4In the example of the mounting head 100 shown, the rear end of the first tubular element 115 has a support surface for receiving one end of the first compression spring 118. In this example, the support surface is formed by a shoulder within the coronal body located at the rear end of the tubular element. Figure 5 In the example of the mounting head 400 shown, the support surface is a flange located at the front end of the first tubular element 415. Other implementations of the support surface are also possible.

[0058] The hooks 136 on the grippers 135 and 435 are axially disposed between the first front opening 120 of the hollow bodies 110 and 410 and the front end of the first tubular elements 115 and 415.

[0059] The second tubular elements 116 and 416 extend along the first axis 102 into the first tubular elements 115 and 415, with the extension section located between the open front end and the open rear end. The front end of the second tubular elements 116 and 416 abuts against the inner surface of the first tubular elements 115 and 415 to form a stop.

[0060] The internal radial dimension of the second tubular elements 116 and 416 from the front end to the rear end is greater than or equal to the maximum radial dimension 38 of the gripping element 26 of the fastener 12.

[0061] Preferably, the second tubular elements 116, 416 include a main inner surface 140, which is substantially cylindrical in shape. More preferably, the radial dimension of the main inner surface 140 is strictly larger than the maximum radial dimension 38 of the gripping element 26.

[0062] The second tubular elements 116 and 416 are fixed in the translational direction relative to the sleeves 112 and 412.

[0063] As described below, sleeves 112 and 412 are adapted to drive the first tubular elements 115 and 415 to translate and rotate relative to the hollow bodies 110 and 410. The first tubular elements 115 and 415 relative to sleeves 112 and 412 and the second tubular elements 116 and 416 can also slide freely under the axial thrust of the grippers 135 and 435.

[0064] A first compression spring 118 is radially arranged between the first tubular elements 115, 415 and the sleeves 112, 412. The first compression spring 118 extends along the first axis 102 and connects the two ends.

[0065] exist Figure 3 and Figure 4 In the example of the mounting head 100 shown, both ends abut against the coronal inner shoulder disposed at the rear end of the first tubular element 115 and the washer 142 disposed on a part of the second tubular element 116, respectively.

[0066] exist Figure 5In the example of the mounting head 400 shown, both ends abut against the flange disposed at the front end of the first tubular element 115 and the collar 442 surrounding a portion of the first tubular element 415 and the second tubular element 416, respectively. The collar 442 and the sleeve 412 are fixedly connected.

[0067] Therefore, the first tubular elements 115 and 415 can translate along the first axis 102 between a front position and a rear position within the sleeves 112 and 412. In the front position, the first tubular element 115 and 415 are closer to the first front opening 120 of the hollow body; at this time, the first compression spring 118 is in a first compressed state. In the rear position, the first tubular element 115 and 415 are farther from the first front opening 120 of the hollow body; at this time, the first compression spring 118 is in a second compressed state, which is more tightly compressed than in the first compressed state.

[0068] The second drive surfaces 119 and 419 can cooperate with the gripping element 26 of the fastener 12 to drive the gripping element to rotate. More specifically, the second drive surfaces 119 and 419 can be assembled with the first drive surface 36 of the gripping knob 34. The second drive surfaces 119 and 419 will be described in detail below.

[0069] Now we will describe it in more detail. Figure 1 and Figure 3-4 The installation head 100.

[0070] The retaining device 114 of the mounting head 100 includes a ring-shaped clamping body 144 disposed within the sleeve 112 and surrounding the first tubular element 115. The rear end of each gripper 135 is fixedly connected to the clamping body 144.

[0071] Each gripper 135 is elastically deformable between a retracted configuration and an extended configuration. In the illustrated embodiment, the holding device 114 includes six elastically deformable grippers 135.

[0072] The clamping body 144 is locked in the sleeve 112 and cannot be rotated. In the illustrated embodiment, the clamping body 144 has a plane 146 and is fitted onto the sleeve by a key 148, which allows the clamping body 144 to slide axially within the sleeve 112.

[0073] The second tubular element 116 is locked in the clamping body 144 and cannot rotate. In the illustrated embodiment, the outer surface of the crown-shaped component of the clamping body 144 has an axially extending groove. This groove has a semi-circular cross-section and accommodates a circular cross-section rod. The rear portion of the clamping body 144 has an axially extending, semi-circular cross-section groove on a portion of its inner surface. The second tubular element 116 is assembled to the clamping body by the rod. The presence of the rod prevents one element from rotating relative to the other.

[0074] Furthermore, in the mounting head 100, the second drive surface 119 is formed from the front end of the first tubular element 115.

[0075] Now we will describe it in more detail. Figure 5-6 The mounting head is 400.

[0076] The retaining device 414 of the mounting head 400 includes a plurality of tongues 446, each tongue being fixedly connected to a corresponding jaw 435. In the illustrated embodiment, the retaining device 414 includes three jaws 435 and three tongues 446.

[0077] In addition, the front end of the sleeve 412 is provided with a plurality of axial slits 448, which are arranged at an angle along the first axis 102. Each tongue 446 is arranged in an axial slit 448 and can slide within the axial slit, with the sliding space located between the front and rear positions of the corresponding jaw 435.

[0078] In addition, the front end of the first tubular element 415 is provided with a front surface 450; the rear end of each gripper is provided with a rear surface 452, which is capable of sliding radially and contacting the front surface 450.

[0079] The front surface 450 forms a non-zero angle with the first axis 102. Preferably, the front surface 450 forms an angle between 0° and 15° with a plane perpendicular to the first axis 102.

[0080] In the illustrated embodiment, the front surface 450 of the first tubular element 415 is in the shape of a truncated cone, while the rear surface 452 of each gripper 435 is in the shape of a concave cone, the outline of which is generally complementary to the front surface 450.

[0081] Furthermore, in the mounting head 400, the second drive surface 419 is formed by the inner surface of the grippers 435 in a retracted configuration. More specifically, each gripper 435 has an inner surface 454 facing the first axis 102, which forms part of the second drive surface 419.

[0082] Now will be on Figure 1 and Figure 2 The installation tool 200 in the installation kit 10 shown is described.

[0083] The installation tool 200 includes: a housing 202, a tube 204, a first sheath 206 and a second sheath 208, a first rotating shaft 210, a first transmission device 212 and a second transmission device 214. In the illustrated embodiment, the installation tool 200 further includes: a second rotating shaft 216, a motor 218, a circuit 219 connected to the motor, and a first switch 220.

[0084] The housing 202 has an open front end 221 aligned along a first axis 102 and a rear end 222. In the illustrated embodiment, the housing rear end 222 includes a removable receiving cavity 223 arranged along the first axis 102.

[0085] Furthermore, in the illustrated embodiment, the housing 202 includes: a main cavity 224 through which the tube 204 extends; and a handle 225. The handle 225 can be gripped by an operator.

[0086] A tube 204 is disposed within a housing 202 and extends along a first axis 102 between an open front end 226 and an open rear end 228. The front end 226 of the tube 204 projects axially beyond the front end 221 of the housing 202. The rear end 228 of the tube 204 is situated within the housing 202. In the illustrated embodiment, the rear end 228 of the tube 204 opens into a receiving cavity 223.

[0087] In the illustrated embodiment, the tube 204 is fixed relative to the housing 202.

[0088] The internal radial dimension of the tube body 204 from the front end 226 to the rear end 228 is greater than or equal to the maximum radial dimension 38 of the gripping element 26 of the fastener 12. Preferably, the internal radial dimension of the tube body 204 along the first axis 102 remains substantially constant. This internal radial dimension is substantially equal to the radial dimension of the main inner surface 140 of the second tubular elements 116, 416 in the aforementioned mounting heads 100, 400.

[0089] The first sheath 206 is located inside the housing 202 and extends along the first axis 102 between the front end 230 and the rear end 232. The first sheath 206 is arranged around the tube body 204.

[0090] The first sheath 206 is located near the front end 221 of the housing 202. More specifically, the front end 230 of the first sheath 206 protrudes axially beyond the front end 221 of the housing 202 and the front end 226 of the tube 204.

[0091] In the mounting kit 10, the front end 230 of the first sheath 206 is secured to the rear end of the sleeve 112 of the mounting head 100 by a connecting element 133.

[0092] Furthermore, in the mounting kit 10, the front end 230 of the first sheath 206 is arranged around the rear end of the second tubular element 116 of the aforementioned mounting head 100 so that the second tubular element 116 communicates with the tube body 204 along the first axis 102.

[0093] As detailed below, the first sheath 206 can rotate and translate relative to the housing 202 along the first axis 102.

[0094] The second sheath 208 is located inside the housing 202 and extends along the first axis 102 between the front end 234 and the rear end 236. The second sheath 208 is arranged around the tube body 204.

[0095] The second sheath 208 is closer to the rear end 222 of the housing 202 than the first sheath 206. More specifically, the front end 234 of the second sheath 208 is connected to the rear end 232 of the first sheath 206.

[0096] As detailed below, the second sheath 208 is configured to drive the first sheath 206 to translate relative to the housing along the first axis 102.

[0097] A first rotation axis 210 is disposed within the housing 202 and extends along a second axis 240. A first distance 242, which is not zero, is separated between the first axis 102 and the second axis 240. In the illustrated embodiment, the first axis 102 and the second axis 240 are parallel to each other.

[0098] In the illustrated embodiment, the first rotating shaft 210 is disposed within the main cavity 224 of the housing.

[0099] The first transmission device 212 is disposed inside the housing 202 and connected to the first rotating shaft 210. As detailed below, the first transmission device 212 is adapted to drive the first sheath 206 to rotate under the action of the first rotating shaft 210 rotating in a first direction.

[0100] The second transmission device 214 is disposed inside the housing 202 and connected to the first rotating shaft 210. As detailed below, the second transmission device 214 is adapted to drive the second sheath 208 to translate under the action of the first rotating shaft 210 rotating in a second direction opposite to the first direction.

[0101] The second rotation axis 216 is disposed within the housing 202 and extends along a third axis 244 between the front end 246 and the rear end 248. This third axis is separated from the first axis 102 and the second axis 230 by a second distance 250 and a third distance 252, respectively, and both distances are not zero. Preferably, the third axis 244 is parallel to the first axis 102. In the illustrated embodiment, the third axis 244 is parallel to both the first axis 102 and the second axis 240.

[0102] In the illustrated embodiment, the second rotating shaft 216 is disposed within the main cavity 224 of the housing.

[0103] The first transmission device 212 includes a first gear train 254, a bearing 217, and a first one-way wheel 256.

[0104] The first rotating shaft 210 and the second rotating shaft 216 are connected by the first gear train 254, so that no matter which direction the first rotating shaft 210 rotates, it will drive the second rotating shaft 216 to rotate in the corresponding direction.

[0105] The front end 246 of the second rotating shaft 216 is connected to a bearing 217, which may be, for example, a roller bearing. More specifically, the bearing 217 connects the second rotating shaft 216 to a first one-way wheel 256 disposed on the first sheath 206.

[0106] The first one-way wheel 256 is adapted to drive the first sheath 206 to rotate under the action of the first rotating shaft 210 rotating in the first direction via the first transmission device 212. When the first rotating shaft 210 rotates in the second direction, the first one-way wheel 256 will not drive the first sheath 206 to rotate.

[0107] Furthermore, the second transmission device 214 includes: a first gear train 254, a second gear train 255, a hollow shaft 257, a second one-way wheel 260; and a drive element 262, which is driven to rotate by the second one-way wheel under the rotation of the first rotating shaft 210 in a second direction. The drive element 262 cooperates with the second sheath 208 to cause the second sheath to translate along the first axis.

[0108] The second gear train 255 connects the second rotating shaft 216 to the hollow shaft 257. The hollow shaft 257 is located at the rear of the tube body 204. The second one-way wheel 260 is arranged along the first axis 102 and is located between the hollow shaft 257 and the rear end of the drive element 262. When the first rotating shaft 210 rotates in the first direction, the second one-way wheel 260 does not drive the drive element 262 to rotate.

[0109] In the illustrated embodiment, the drive element 262 is a ball screw. In other embodiments not shown, the drive element 262 may be a threaded pin, a roller screw, or a worm gear.

[0110] The electric motor 218 is an electric motor located within the housing 202, preferably installed in the main cavity 224. In the illustrated embodiment, the first rotating shaft 210 constitutes the output shaft of the electric motor.

[0111] Circuit 219 is connected to motor 218. In the illustrated embodiment, installation tool 200 includes an electronic module 264 that at least partially constitutes circuit 219.

[0112] The first switch 220 is disposed inside the housing 202 and integrated into the circuit 219. The first switch 220 is mechanically available in an open state (e.g., ...). Figure 2(As shown) Switching between the open and closed states. When the first switch 220 is in the open state, the circuit 219 is cut off.

[0113] Preferably, the first switch 220 includes an elastic sheet 265, which keeps the first switch in the open state when at rest. Applying pressure to the elastic sheet can close the first switch.

[0114] In the illustrated embodiment, the installation tool 200 also includes a power supply 266 for the electric motor, which is connected to the circuit 219. The power supply may be, for example, a battery 266 connected to the housing 202. Preferably, the battery 266 is detachably attached to the handle 225, located opposite the main cavity 224. Therefore, the battery 266 acts as a counterweight to the main cavity, improving the ergonomics of the installation tool 200.

[0115] In addition, in the illustrated embodiment, the installation tool 200 also includes a second switch (not shown) and a trigger 268.

[0116] The second switch is integrated into circuit 219 and can be switched between an open and closed state. When the second switch is in the open state, circuit 219 is disconnected.

[0117] The trigger 268 is mounted on the handle 225 of the housing 202. Preferably, when the operator presses the trigger, the second switch is in the closed state; when the trigger is not pressed, the second switch is in the open state.

[0118] Preferably, when both the first switch 220 and the second switch are closed, the circuit 219 is closed, enabling the battery 266 to supply power to the motor 218.

[0119] The following will be about Figure 1 and Figure 3 The interface device 300 of the installation kit 10 shown will be described.

[0120] The interface device 300 includes: an interface body 302, an assembly ring 304, at least one second compression spring 306, and a contact rod 308. Preferably, as described below, the interface device 300 further includes a pressure sensor (not shown).

[0121] The interface body 302 has a ring structure and extends along the first axis 102 between the front end and the back end.

[0122] The front end of the interface body 302 is provided with a front face 312, which has a crown-shaped structure and is perpendicular to the first axis 102.

[0123] The front end of the interface body 302 is also provided with at least one spring seat 314, the opening of which faces the front 312. Preferably, the front end of the interface body 302 is provided with a plurality of spring seats 314, which are distributed angularly around the first axis 102.

[0124] The interface body 302 is also provided with a through hole 316, which is parallel to the first axis 102. One end of the through hole 316 opens towards the front 312, and the other end opens towards the rear end of the interface body 302.

[0125] The assembly ring 304 has a ring-shaped structure and extends along the first axis 102 between the front and rear ends. The assembly ring 304 is provided with an inner shoulder 318 facing the rear end of the assembly ring.

[0126] The rear end of the assembly ring 304 is connected to the front end of the interface body 302, for example, by means of a threaded / tapping system. The assembly ring 304 thus forms an inner cavity 320, the boundary of which is defined along the first axis 102 by an inner shoulder 318 and the front face 312 of the interface body 302.

[0127] At least one second compression spring 306 is fixed to the interface body 302 and protrudes axially beyond the front face 312. In the illustrated embodiment, the rear end of the second compression spring 306 is inserted into a spring seat 314; if there are multiple spring seats 314, one of them is inserted.

[0128] In the first compressed state, the front end of the second compression spring 306 is located inside the inner cavity 320 and protrudes axially beyond the front surface 312 of the interface body 302. In the second compressed state, the second compression spring 306 is compressed more tightly than in the first compressed state. The front end of the second compression spring is located inside the spring seat 314 and is flush with the front surface 312 of the interface body.

[0129] Preferably, the interface device 300 includes a plurality of second compression springs 306, the rear end of each of the second compression springs being inserted into a spring seat 314.

[0130] The contact rod 308 extends between its front and rear ends in a direction parallel to the first axis 102. The contact rod 308 is disposed within the through hole 316 of the interface body 302 and is axially slidable along the through hole.

[0131] Preferably, the front end of the contact rod 308 is provided with a forward-opening internal threaded hole 322 for installing a threaded pin 310, so that the flush stroke of the contact rod can be manually adjusted according to the stiffness of the compression spring.

[0132] As described below, the rear end of the contact rod 308 can drive the first switch 220 of the installation tool 200. In the illustrated embodiment, the rear end of the contact rod 308 is provided with a drive arm 324, which is disposed within the housing 202 of the installation tool.

[0133] In addition, the interface device 300 also includes a third compression spring 326 extending in a direction parallel to the first axis 102. The front end of the third compression spring 326 is connected to the rear end of the contact rod 308. The rear end of the third compression spring 326 is supported or fixed to the housing 202 of the installation tool 200.

[0134] Threaded pin 310 is optional and is installed in the internal threaded hole 322 of contact rod 308. Preferably, as Figure 3 As shown, the threaded pin 310 is fitted into the internal threaded hole 322, with the front end of the pin slightly protruding from the front end of the contact rod 308.

[0135] Preferably, the interface body 302 includes at least one strain gauge, and more preferably at least three strain gauges, to form a pressure sensor. The pressure sensor is connected to the electronic module 264 of the mounting tool 200. When the front lip 122 of the mounting head 100 presses against the flange 42 of the sleeve in the insertion hole 54 of the structure, the pin 16 is subjected to tensile force. The pressure sensor measures the tensile force on the pin 16 by measuring the compressive force between the structure 14 and the housing 202 of the mounting tool.

[0136] exist Figure 3 In the first configuration of the mounting kit 10 shown, the flange 126 of the hollow body 110 of the mounting head 100 contacts the inner shoulder 318 of the mounting ring 304; each of the second compression springs 306 is in a first compression state; the front end of the threaded pin 310 or contact rod 308 protrudes axially beyond the front face 312 of the interface body; and the first switch 220 is in the open state.

[0137] In the second configuration (not shown) of the mounting kit 10, the flange 126 of the hollow mounting head contacts the front face 312 of the interface body; the front end of the threaded pin 310 or contact rod 308 contacts the flange 126 and is approximately coplanar with the front face 312; each of the second compression springs 306 is in a second compression state, which is more compressed than the first compression state; and the first switch 220 is in the closed state.

[0138] More precisely, in the first configuration of the mounting kit 10, the third compression spring 326 is in a first compression state; and the drive arm 324 of the contact rod 308 maintains a certain distance from the first switch 220 along the first axis 102; in the second configuration of the mounting kit 10, the third compression spring 326 is in a second compression state, which is more compressed than the first compression state; the drive arm 324 of the contact rod 308 presses on the first switch 220, keeping the first switch closed.

[0139] In a variant embodiment of the mounting kit (not shown), the mounting kit does not include the interface device 300; the mounting heads 100, 400 are connected to the mounting tool 200 via an interface nut 500, as shown. Figure 5 As shown. The flange 126 of the hollow body 110, 410 of the mounting head 100, 400 is axially fixed relative to the front end 221 of the housing 202 of the mounting tool.

[0140] This variant of the installation kit includes an interface nut 500, in which the first switch 220 of the installation tool 200 remains permanently closed.

[0141] The method of installing fastener 12 onto structure 14 using mounting kit 10 is now described.

[0142] The installation method specifically includes: first, installation in place; second, driving operation; and third, disassembly and removal.

[0143] For example, the first step of installation can be performed as follows: First, fastener 12 is inserted into drilled hole 54 in structure 14. More precisely, as Figure 4 As shown, the tubular body 40 of the sleeve 30 (containing the pin 16) is inserted into the drill hole 54. The head 22 of the pin 16 and the flange 42 of the sleeve 30 are thus arranged on the first surface 50 side; the deformable region 48 of the tubular body 40 of the sleeve appears on the second surface 52 side.

[0144] The operator then brings the mounting kit 10 close to the gripping element 26 of the fastener 12. The operator presses the trigger 268, thereby closing the second switch of the mounting tool 200; and inserts the gripping knob 34 into the first front opening 120 of the mounting heads 100, 400. The operator positions the mounting kit 10 so that the first axis 102 is aligned with the fastening axis 20.

[0145] At this time, the mounting kit 10 is in the first configuration state described above. In other words, the flange 126 of the mounting heads 100, 400 is in contact with the inner shoulder 318 of the fastening ring 304; and the first switch 220 is in the open state, thereby cutting off the power supply to the motor 218 in the mounting tool 200.

[0146] Subsequently, the operator applies a pushing force toward the structure 14 to the mounting kit 10 along the first axis 102. The gripping knob 34 contacts the hook 136 of the grippers 135, 435 in the retracted configuration.

[0147] As the axial thrust continues, the first spring 118 is compressed, and the grippers 135, 435 and tubular elements 116, 416 move from the front position to the rear position. With the gripping knob 34 in contact with the hook 136, the grippers 135, 435 are radially moved from the retracted configuration to the extended configuration. In the first embodiment of the mounting head 100, the grippers 135 elastically deform around the clamping body 144. In the second embodiment of the mounting head 400, the rear surface 452 of each gripper 435 slides radially against the front surface of the first tubular element 115.

[0148] As the axial thrust continues, the hook portion 136 of the gripper passes over the gripping knob 34 and engages with the gripping rod 32. The grippers 135 and 435 then return to their retracted configuration. Simultaneously, the first spring 118 is released, and the grippers 135 and 435 and the first tubular elements 115 and 415 move from the rear position to the front position; and the second drive surfaces 119 and 419 of the mounting heads 100 and 400 assemble with the first drive surface 36 of the fastener.

[0149] Thus, the gripping element 26 of the fastener 12 is locked in the sleeve 112, 412 by the retaining devices 114, 414 of the mounting heads 100, 400.

[0150] As the axial thrust continues to be applied, the front lip 122 of the mounting heads 100 and 400 contacts the support surface 46 of the flange 42 of the sleeve 30. The hollow bodies 110 and 410 of the mounting heads 100 and 400 move rearward relative to the mounting tool 200.

[0151] During the backward movement of the hollow bodies 110 and 410, the rear limiting members 124 and 424 of the hollow bodies come into contact with the hooks 136 of the grippers 135 and 435.

[0152] Furthermore, the rearward movement of the hollow bodies 110 and 410 causes the mounting kit 10 to move from the first configuration to the second configuration. In other words, the flange 126 of the hollow bodies 110 and 410 moves rearward into the inner cavity 320 of the clamping ring 304, thereby pushing back the contact rod 308. The drive arm of the contact rod 308 puts the first switch 220 in the closed position, thereby powering the motor 218 of the mounting tool 200.

[0153] At this point, the first step of installation is complete. According to a variant embodiment, the gripping element 26 of the fastener is locked by the retaining devices 114, 414 of the assembly heads 100, 400, and this locking operation is completed before the fastener 12 is inserted into the drilled hole of the structure 14.

[0154] For example, the second step of the drive operation can be performed as follows: Tool 200 initiates the drive process. This process can be executed, for example, by a program stored in electronic module 264. In particular, electronic module 264 is capable of processing signals from pressure sensors to determine the magnitude of the tension; when the tension reaches a preset target value, it controls the first rotating shaft 210 to stop rotating in the second direction, and then controls the first rotating shaft 210 to rotate in the first direction.

[0155] In the first stage of the drive process, the first rotating shaft 210 of the installation tool 200 rotates in the second direction. As a result, the second sheath 208 of the tool 200 is translated backward by the second transmission device 214.

[0156] The second sheath 208 drives the first sheath 206 to move backward while maintaining the axial thrust of the mounting heads 100 and 400 toward the structure 14. The pin 16 of the fastener 12 is thus pulled backward, while the sleeve 30 remains in place through the contact between the front lip 122 and the support surface 46.

[0157] The tension on the pin 16 causes the deformable region 48 of the sleeve 30 to form a radial convex edge on the second surface 52 of the structure 14, as described in document EP2894356.

[0158] In the second stage of the drive process, the motor stops rotating in the second direction; then, the first rotating shaft 210 of the installation tool 200 begins to rotate in the first direction. Therefore, the first sheath 206 of the installation tool 200 is driven to rotate via the first transmission device 212.

[0159] Therefore, the external thread section 24 of the pin 16 is screwed into the internal thread section 44 of the sleeve 30 until the head 22 contacts the flange 42 of the sleeve.

[0160] The first sheath 206 continues to rotate until the torque applied to the gripping element 26 causes the fracture groove 28 to break. Upon fracture, the electronic module 264 controls the motor to stop rotating. This completes the second step of the drive operation. Optionally, during the second step of the drive operation, the pressure sensor measures the compressive force between the hollow mounting head bodies 110, 410 and the interface body 302.

[0161] For example, the third step of disassembly and removal can be carried out as follows: After the fastener 12 breaks at the fracture groove 28, the operator stops applying axial force to the mounting kit 10 toward the structure 14. After separating from the structure 14, the mounting kit 10 changes from the second configuration to the first configuration. Therefore, even if the operator presses the trigger 268, the motor 218 cannot be started unexpectedly.

[0162] The pin 16 and sleeve 30 remain fixed to the structure 14, while the gripping element 26, which is separated from the pin 16, remains in the mounting heads 100 and 400.

[0163] Next, the operator flips the mounting heads 100 and 400 upwards. As a result, the gripping element 26 moves under gravity along the first axis 102, sliding from the front end of the tubular elements 116 and 416 of the mounting heads 100 and 400 to the rear end 228 of the mounting tool tube 204. The gripping element 26 is thus stored in the removable receiving cavity 223, preventing it from being accidentally ejected by the mounting tool 200.

[0164] In a variant embodiment, the gripping element 26 is inserted into the tube 204 of the installation tool 200 by inserting a new fastener 12 into the mounting heads 100, 400.

[0165] According to the modified embodiment of the mounting kit including the interface nut 500 described above, only the second switch of the mounting tool 200 can open and close the circuit 219. Therefore, the starting of the motor 218 depends solely on the operator pressing the trigger 268, rather than on the mounting kit pressing against the structure 14 axially.

[0166] The aforementioned mounting kit 10, particularly the mounting kit including the interface device 300, includes a switch that is closed by pressing the mounting kit 10 axially against the structure 14 without requiring the operator to actively trigger the switch with their index finger.

[0167] In the above installation kit example, a second switch 268 is provided in the form of a trigger on the handle 225, so that the operator can install multiple fasteners in succession without releasing the second switch 268, thereby reducing the pressing frequency to less than once per minute and significantly reducing the risk of musculoskeletal disorders (TMS) during a day's work.

[0168] However, the second switch 268 allows the operator to interrupt the installation of the fastener 12 at any time, thus providing additional security for the installation kit 10.

Claims

1. An installation kit (10) for installing fasteners (12) into a structure (14), comprising: Mounting head (100) includes: A hollow body (110) extends along the main axis (102), and the rear end of the hollow body includes a flange (126); and The first movable element (112, 114) is disposed in the hollow body and can move relative to the hollow body; the first movable element can cooperate with the fastener (12); and Installation tools (200) include: The housing (202) has an open front end and a rear end aligned along the main axis (102); A second movable element (206, 208) extends into the housing (202) and is rotatable and / or translateable relative to the housing; The second movable element (206, 208) is assembled to the first movable element (112, 114) to drive the first movable element to translate and / or rotate; An electric motor (218); the output shaft of the electric motor (210); and a circuit (219) connected to the electric motor; the circuit includes a switch (220) that can be switched between an open state and a closed state. A transmission device (212, 214), disposed in the housing and connected to the output shaft (210), is capable of driving the second movable element (206, 208) to rotate and / or translate under the rotation of the output shaft (210); and A power supply (266) for powering the motor is connected to the circuit (219). The installation kit is characterized in that it further includes an interface device (300), which comprises: An annular interface body (302) is provided along the main axis. The interface body includes: a front side (312) that is generally perpendicular to the main axis (102); and a through hole (316) that is parallel to the main axis and leads to the front side. At least one first compression spring (306) is fixed to the interface body and protrudes beyond the front; The contact rod (308) can slide within the through hole (316) of the interface body, and the contact rod extends between the front end and the rear end, the rear end of which can drive the switch (220) of the circuit to switch to the closed state or the open state. An assembly ring (304) is assembled to an interface body (302) and disposed along the main axis. The assembly ring includes: a shoulder (318) substantially perpendicular to the main axis; and an inner cavity (320) whose boundary is defined by the shoulder and the front axial direction of the interface body. The interface body is fixed to the front end of the housing (202) of the installation tool (200), and the assembly ring is installed at the rear end of the hollow body (110) of the installation head; the flange (126) of the hollow body is located in the inner cavity of the assembly ring; the front end of the first compression spring (306) is in contact with the flange; The mounting kit has a first configuration and a second configuration. In the first configuration of the mounting kit, the flange (126) of the hollow body of the mounting head contacts the shoulder of the mounting ring (304); the front end of the contact rod (308) protrudes axially beyond the front (312) of the interface body; the first compression spring (306) is in a first compression state; and the switch (220) is open; In the second configuration of the mounting kit, the flange (126) of the hollow body of the mounting head contacts the front (312) of the interface body; the front end of the contact rod (308) contacts the flange; the first compression spring (306) is in a second compression state, which is more compressed than the first compression state; and the switch (220) is closed.

2. The installation kit (10) according to claim 1, wherein: The rear end of the contact rod (308) of the interface device is provided with a drive arm (324); in the second configuration, the drive arm contacts the switch (220) and keeps the switch closed.

3. The installation kit (10) according to claim 2, wherein: The second compression spring (326) is arranged parallel to the main axis and has a first end and a second end. The first end is fixed to the rear end of the contact rod (308) and the second end is fixed to the housing (202) of the installation tool. When the second compression spring (326) is in the first compression state, the drive arm (324) of the contact rod is a certain distance away from the switch (220). When the second compression spring is in the second compression state, which is more compressed than the first compression state, the drive arm contacts the switch to keep the switch closed.

4. The installation kit (10) according to any one of the preceding claims, wherein, The interface device includes a plurality of first compression springs (306) arranged around the main axis, each first compression spring being fixed to the interface body and protruding beyond the front (312) of the interface body.

5. The installation kit (10) according to any one of the preceding claims, wherein: The contact rod has an internal threaded hole (322) at its front end; the interface device also includes a threaded pin (310) disposed in the internal threaded hole, such that in the second configuration of the mounting kit, the threaded pin contacts the flange (126) of the hollow body (110) of the mounting head.

6. The mounting kit (10) according to any one of the preceding claims, wherein the fastener comprises: A rod (16) extending along the fastening axis and having a head (22); wherein the front end of the hollow body of the mounting head includes: a front opening (120); and a lip (122) disposed around the front opening and capable of contacting a surface surrounding the head (22) of the rod, substantially perpendicular to the fastening axis.

7. The mounting kit (10) according to claim 6, the fastener further includes a sleeve (30) arranged around the rod, the sleeve being equipped with a flange (42) capable of contacting the head of the rod, the flange including a support surface (46) perpendicular to the fastening axis. in, The lip (122) of the hollow body can coincide with the support surface (46) of the sleeve flange.

8. The mounting kit (10) according to claim 7, the fastener further includes a gripping element (26) that protrudes axially beyond the head (22) of the rod; wherein the front opening (120) of the hollow mounting head is adapted to receive the gripping element; and the first movable element includes a retaining device (114) for clamping the gripping element.

9. A method for installing a fastener (12) comprising a rod (16) extending along a fastening axis and having a head (22), the method being carried out using the installation kit (10) of claim 8, comprising the following steps: The fastener rod (16) is inserted into a drilled hole (54) in the structure, the drilled hole leading to the operable surface (50) of the structure, the head (22) of the rod being located on one side of the operable surface; the lip (122) of the hollow body (110) of the mounting head is axially pressed against the structure; the first movable element (112, 114) of the mounting head engages with the fastener rod (16); Apply a forward axial force to the installation tool (200) to change the installation kit (10) from the first configuration to the second configuration; Start the motor (218) of the installation tool to drive the output shaft (210) to rotate, thereby causing the first movable element (112, 114) and the second movable element (206, 208) to translate and / or rotate; Stop applying forward axial force to the installation tool to change the installation kit (10) from the second configuration to the first configuration.

10. The method according to claim 9, wherein: The sleeve (30) and the rod (16) of the fastener are simultaneously inserted into the through hole (54) of the structure; and when the lip (122) of the hollow body of the mounting head is pressed against the structure along the axial direction, the lip contacts the support surface (46) of the sleeve flange.

11. The method according to claim 9 or 10, wherein: The engagement of the first movable element (112, 114) of the mounting head (100) with the fastener refers to the gripping element (26) of the fastener being held by the retaining device (114) of the first movable element.

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