Multi-axis simultaneous temporary fastening device

Abstract

To provide a multi-axis simultaneous temporary fastening device capable of arranging three or more screws in one direction, temporarily fastening them at the same time, and miniaturizing the device.SOLUTION: The multi-shaft simultaneous temporary tightening device 1 includes three or more sockets 11 in which rotation shafts are disposed in parallel in a reference plane, three or more coaxial gears 12 which are coaxially provided to individually correspond to the sockets 11, one rotation drive source 13 which is disposed coaxially with one representative coaxial gear 12A among the coaxial gears 12 and rotationally drives the representative coaxial gear 12A, and two or more transmission gears 14 which are meshed with two adjacent coaxial gears 12 among the coaxial gears 12.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a multi-axis simultaneous temporary tightening device that can temporarily tighten a plurality of screws simultaneously using one rotary drive source. [Background technology]

[0002] Multi-shaft simultaneous tightening devices that have multiple rotating shafts and can tighten multiple screws simultaneously have been known for some time. For example, Patent Document 1 describes a device that transmits rotational force input to one input shaft to first and second output shafts to simultaneously rotate the first and second output shafts and tighten screws in two locations. Also, for example, Patent Document 2 describes a device that uses one motor to rotate a main gear, and simultaneously rotates multiple output cylinders arranged around the main gear via multiple intermediate gears, thereby tightening multiple screws simultaneously. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 5628377 [Patent Document 2] Patent Application No. 2022-162873 Summary of the Invention [Problem to be solved by the invention]

[0004] However, the device described in Patent Document 1 has a problem in that it is limited in the number of screws that can be tightened simultaneously, making it impossible to tighten three or more screws simultaneously. Furthermore, the device described in Patent Document 2 has a problem in that the arrangement of screws that can be tightened simultaneously is limited to a circumferential arrangement, making it impossible to tighten three or more screws that are arranged in a line simultaneously. Furthermore, the devices described in Patent Documents 1 and 2 transmit the rotational force input to one input shaft to each output shaft individually, requiring space for a central input shaft, resulting in an increase in the size of the device.

[0005] The present invention was made in response to these problems, and aims to provide a multi-axis simultaneous temporary tightening device that can arrange three or more screws in one direction and temporarily tighten them simultaneously, and that can be made smaller in size. [Means for solving the problem]

[0006] The first multi-shaft simultaneous temporary fastening device of the present invention comprises three or more sockets whose rotating shafts are arranged in parallel within a reference plane, three or more coaxial gears each individually corresponding to one of the sockets and arranged coaxially, one rotary drive source arranged coaxially with one representative coaxial gear among the coaxial gears and for directly or indirectly driving the representative coaxial gear to rotate, and two or more transmission gears meshed with two adjacent coaxial gears among the coaxial gears and whose rotating shafts are arranged within the area consisting of the reference plane and one side partitioned by the reference plane.

[0007] The second multi-shaft simultaneous temporary fastening device of the present invention comprises one drive socket and multiple driven sockets whose rotating shafts are arranged in parallel on the left and right sides within a reference plane, one drive coaxial gear arranged coaxially behind the drive socket, multiple driven coaxial gears arranged coaxially behind each driven socket in correspondence with each other, one rotational drive source arranged coaxially behind the drive coaxial gear and for directly or indirectly rotating the drive coaxial gear, and multiple transmission gears meshed with two adjacent drive coaxial gears or two adjacent driven coaxial gears, and whose rotational shafts are arranged within either of the areas partitioned by the reference plane. [Effects of the Invention]

[0008] According to the first multi-axis simultaneous temporary fastening device of the present invention, it is equipped with three or more sockets whose rotation axes are arranged in parallel within a reference plane, and three or more coaxial gears that are individually corresponding to each socket and arranged coaxially, and one representative coaxial gear among the coaxial gears is rotated by one rotation drive source, and transmission gears are meshed with two adjacent coaxial gears among the coaxial gears, so that three or more screws can be arranged in one direction and easily temporary fastened simultaneously, and the device can be made compact.

[0009] Furthermore, if two adjacent coaxial gears are not meshed with each other, but are meshed with only one of the transmission gears, and the shapes of each coaxial gear are made identical, each socket can be rotated in the same phase and with the same torque, making it easier to temporarily tighten three or more screws at the same time.

[0010] Furthermore, by controlling the rotation speed of each coaxial gear to between 100 rpm and 150 rpm, three or more screws can be pre-tightened simultaneously more easily without having to rotate each socket with high precision and the same torque.

[0011] According to the second multi-axis simultaneous temporary fastening device of the present invention, it is equipped with one drive socket whose rotation axes are arranged in parallel on the left and right sides within a reference plane, multiple driven sockets, one drive coaxial gear arranged coaxially behind the drive socket, and multiple driven coaxial gears arranged coaxially behind each driven socket in correspondence with each other, and the drive coaxial gear is rotated by one rotational drive source, and a transmission gear is meshed with two adjacent drive coaxial gears or two adjacent driven coaxial gears, so that three or more screws can be arranged in one direction and temporarily fastened simultaneously with ease, and the device can be made smaller. [Brief explanation of the drawings]

[0012] [Figure 1] 1 is a diagram illustrating an external configuration of a multi-axis simultaneous temporary fastening device according to an embodiment of the present invention. [Figure 2] 2 is a diagram illustrating an internal configuration of the multi-axis simultaneous temporary fastening device shown in FIG. 1. [Figure 3] FIG. 3 is a diagram illustrating a cross-sectional configuration taken along line II shown in FIG. 2. [Figure 4] FIG. 10 is a diagram illustrating a modified example of the present invention. [Figure 5] FIG. 10 is a diagram illustrating another modified example of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0013] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[0014] Fig. 1 shows the external configuration of a multi-axis simultaneous temporary fastening device 1 according to one embodiment of the present invention. Figs. 2 and 3 show the internal configuration of the multi-axis simultaneous temporary fastening device 1, with Fig. 3 showing a cross-sectional configuration along line II shown in Fig. 2. This multi-axis simultaneous temporary fastening device 1 is capable of arranging three or more screws in one direction and temporarily fastening them simultaneously. The screws may be male threads such as bolts or female threads such as nuts.

[0015] The multi-shaft simultaneous temporary fastening device 1 includes, for example, a main body 10 and a handle 20 provided below the main body 10. The main body 10 includes, for example, three or more sockets 11 whose rotation axes are arranged in parallel within a reference plane, three or more coaxial gears 12 provided coaxially in correspondence with the respective sockets 11, one rotational drive source 13 arranged coaxially with one representative coaxial gear 12A of the coaxial gears 12 and for directly or indirectly driving the representative coaxial gear 12A to rotate, and two or more transmission gears 14 meshed with two adjacent coaxial gears 12 of the coaxial gears 12.

[0016] The sockets 11 are arranged, for example, with their rotation axes parallel to the left and right in a reference plane, and the core coaxial gears 12 are individually and coaxially provided behind the sockets 11. The rotation drive source 13 is, for example, coaxially provided behind the representative coaxial gear 12A. Note that Figures 1 to 3 specifically show a case where six sockets 11, six coaxial gears 12, and five transmission gears 14 are provided. Also, Figure 2 shows a cross-sectional configuration at the reference plane, and in Figure 3, the position of the reference plane is indicated by a dashed line.

[0017] In this way, in this multi-shaft simultaneous temporary fastening device 1, one representative coaxial gear 12A is rotationally driven by one rotary drive source 13, and rotational force is transmitted to the other coaxial gears 12 via each transmission gear 14 and, if necessary, other coaxial gears 12. This eliminates the need for input shafts that individually transmit rotational force to each coaxial gear 12, making it possible to make the device more compact.

[0018] The representative coaxial gear 12A is also referred to as a drive coaxial gear, and the coaxial gears 12 other than the representative coaxial gear 12A are also referred to as driven coaxial gears. The socket 11 provided coaxially with the drive coaxial gear (i.e., the representative coaxial gear 12A) is also referred to as a drive socket, and the socket 11 provided coaxially with the driven coaxial gear (i.e., the coaxial gears 12 other than the representative coaxial gear 12A) is also referred to as a driven socket. There is one drive coaxial gear and one drive socket, and there are multiple driven coaxial gears and multiple driven sockets. Each transmission gear 14 is meshed with two adjacent drive coaxial gears or two adjacent driven coaxial gears. Even in this case, the driving coaxial gear is rotationally driven by one rotary drive source 13, and rotational force is transmitted to each driven coaxial gear via each transmission gear 14 and, if necessary, other driven coaxial gears. Therefore, as described above, there is no need for an input shaft that transmits rotational force individually to each driven coaxial gear, and the device can be made smaller.

[0019] The main body 10 extends, for example, in the front-to-rear direction, with the sockets 11 disposed at the front and a rotary drive source 13 such as a motor disposed at the rear. The coaxial gears 12, rotary drive source 13, and transmission gears 14 are housed inside a cover body 15, and the sockets 11 are provided so as to protrude outside the cover body 15.

[0020] Each socket 11 has, for example, a recessed portion 11A at its tip end into which a screw is fitted, and is configured so that by rotating the socket 11, the screw fitted into the recessed portion 11A can be rotated. There is only one reference plane on which the rotation axis of each socket 11 is located, and this can be set arbitrarily. For example, a connecting portion 11B is individually and coaxially provided at the rear of each socket 11, and for example, a rotating shaft 16 is individually and coaxially provided at the rear of each connecting portion 11B. Each socket 11 and each rotating shaft 16 are connected by, for example, connecting members 17, individually connecting each connecting portion 11B to the front side of each rotating shaft 16.

[0021] Each coaxial gear 12 is individually provided coaxially around each rotation shaft 16. Adjacent two of the coaxial gears 12 are not meshed with each other, and it is preferable that each adjacent two of the coaxial gears 12 are meshed with only one of the transmission gears 14. Furthermore, the shapes of the coaxial gears 12, i.e., the shape and size, can be the same, and the shapes of the transmission gears 14, i.e., the shape and size, can be the same. This allows each socket 11 to rotate in the same phase and with the same torque.

[0022] The rotary drive source 13 is connected to a representative rotation shaft 16A on which the representative coaxial gear 12A is disposed. Each transmission gear 14 is a counter gear that rotates in the opposite direction to the corresponding coaxial gear 12, and transmits rotational force to the adjacent coaxial gear 12. The rotation shaft of each transmission gear 14 is preferably disposed within an area that includes a reference plane and one side partitioned by the reference plane. This configuration allows the device to be made smaller in both the vertical and horizontal directions.

[0023] 3 shows a case where the rotation axes of four transmission gears 14 are arranged in an area on one side partitioned by the reference plane, and the rotation axis of one transmission gear 14 is arranged within the reference plane. Also, the rotation axes of each transmission gear 14 can be arranged arbitrarily within the area that combines the reference plane and one side partitioned by the reference plane. For example, the rotation axes of all transmission gears 14 may be arranged within the reference plane, or the rotation axes of all transmission gears 14 may be arranged in the area on one side partitioned by the reference plane, or the rotation axes of one or more transmission gears 14 may be arranged both within the reference plane and in the area on one side partitioned by the reference plane.

[0024] Furthermore, the rotation shafts of the transmission gears 14 may be located within either of the regions defined by the reference plane, as shown in FIG. 4. The region defined by the reference plane refers to the regions on both sides of the reference plane, excluding the reference plane, and the rotation shafts of the transmission gears 14 may be located in either of the regions defined by the reference plane. This configuration allows the device to be made smaller in the left-right direction. In this case, it is more preferable to locate the rotation shafts of all of the transmission gears 14 within one of the regions defined by the reference plane, as shown in FIG. 5, since this also allows the device to be made smaller in the up-down direction. Note that the position of the reference plane is indicated by a dashed line in FIGS. 4 and 5.

[0025] It is preferable that this multi-axis simultaneous temporary fastening device 1 further includes a control unit 18 that controls the rotation speed of each coaxial gear 12 to 100 rpm or more and 150 rpm or less. By controlling the rotation speed, three or more screws can be temporarily fastened simultaneously more easily without having to rotate each socket 11 with the same torque with high precision.

[0026] This multi-axis simultaneous temporary fastening device 1 is used, for example, as follows: First, for example, a screw is fitted into the recessed portion 11A of each socket 11, and the worker holds the handle portion 20 and moves it to the position where the screw is to be fastened. Next, for example, the worker drives the rotation drive source 13 of the multi-axis simultaneous temporary fastening device 1.

[0027] As a result, the rotary drive source 13 is driven, causing the representative rotation shaft 16A and the representative coaxial gear 12A to rotate, which in turn causes the transmission gear 14 meshed with the representative coaxial gear 12A to rotate, causing the other coaxial gears 12 adjacent to the representative coaxial gear 12A to rotate. Similarly, the other coaxial gears 12 on the opposite side of the representative coaxial gear 12A rotate in sequence via the transmission gears 14. The rotation of the rotary drive source 13 is controlled, for example, by the control unit 18 so that the rotation speed of each coaxial gear 12 is 100 rpm or more and 150 rpm or less. As a result, each socket 11 provided coaxially corresponding to each coaxial gear 12 rotates, and the screws fitted in each socket 11 rotate and are simultaneously pre-tightened.

[0028] As described above, according to this embodiment, there are provided three or more sockets 11 whose rotation axes are arranged in parallel within a reference plane, and three or more coaxial gears 12 which are individually provided coaxially corresponding to each socket 11, and one representative coaxial gear 12A of each coaxial gear 12 is rotationally driven by one rotation drive source 13, and two adjacent coaxial gears 12 are meshed with transmission gears 14. As a result, three or more screws can be arranged in one direction and easily temporarily fastened simultaneously, and the device can be made smaller in the vertical and horizontal directions.

[0029] Furthermore, if two adjacent coaxial gears 12 are not meshed with each other, but are meshed with only one of the transmission gears 14, and the coaxial gears 12 have the same shape, the sockets 11 can be rotated in the same phase and with the same torque, making it easier to temporarily tighten three or more screws simultaneously. Of course, it is also possible for the transmission gears 14 to have different lengths in the front-to-rear direction, for example.

[0030] Furthermore, by controlling the rotation speed of each coaxial gear 12 to be between 100 rpm and 150 rpm, three or more screws can be pre-tightened simultaneously more easily without rotating each socket 11 with the same torque with high precision.

[0031] Furthermore, according to this embodiment, the device comprises one drive socket and multiple driven sockets whose rotation axes are arranged in parallel on the left and right sides within a reference plane, one drive coaxial gear arranged coaxially behind the drive socket, and multiple driven coaxial gears arranged coaxially behind each driven socket in a corresponding manner, and the drive coaxial gear is rotationally driven by one rotation drive source 13, and transmission gear 14 is meshed with two adjacent drive coaxial gears or two adjacent driven coaxial gears, so that three or more screws can be arranged in one direction and easily temporarily tightened simultaneously, and the device can be made smaller in the vertical and horizontal directions.

[0032] Although the present invention has been described above using embodiments, the present invention is not limited to the above embodiments and can be modified in various ways. For example, although each component has been specifically described in the above embodiments, the specific configuration of each component may be different. In addition, it is not necessary to include all of the above-described components, and other components may be included. [Explanation of symbols]

[0033] 1...Multi-shaft simultaneous temporary fastening device, 10...Main body, 11...Socket, 11A...Recessed portion, 11B...Connection portion, 12...Coaxial gear, 12A...Representative coaxial gear, 13...Rotation drive source, 14...Transmission gear, 15...Cover body, 16...Rotating shaft, 16A...Representative rotating shaft, 17...Connection member, 18...Control portion, 20...Handle portion

Claims

1. Three or more sockets whose rotation axes are arranged in parallel within a reference plane; three or more coaxial gears individually corresponding to the sockets and arranged coaxially; a rotational drive source disposed coaxially with one representative coaxial gear among the coaxial gears, for directly or indirectly driving and rotating the representative coaxial gear; two or more transmission gears that are meshed with two adjacent ones of the coaxial gears and have rotation axes disposed within an area that includes the reference surface and one side partitioned by the reference surface; A multi-axis simultaneous temporary fastening device comprising:

2. Adjacent two of the coaxial gears are not meshed with each other, two adjacent coaxial gears are meshed with only one of the transmission gears; The coaxial gears have the same shape.

2. The multi-axis simultaneous temporary fastening device according to claim 1.

3. 2. The multi-shaft simultaneous temporary fastening device according to claim 1, further comprising a control unit that controls the rotation speed of each of the coaxial gears to 100 rpm or more and 150 rpm or less.

4. One drive socket and a plurality of driven sockets whose rotation axes are arranged in parallel on the left and right sides within a reference plane; a coaxial drive gear provided coaxially behind the drive socket; a plurality of coaxial driven gears respectively provided coaxially behind the respective driven sockets; a rotational drive source disposed coaxially behind the coaxial drive gear and configured to directly or indirectly rotate the coaxial drive gear; a plurality of transmission gears meshed with two adjacent ones of the driving coaxial gear and the driven coaxial gear, or with each other, and having rotation axes disposed within either of the regions partitioned by the reference surface; A multi-axis simultaneous temporary fastening device comprising:

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