Sensor assembly, linear motion guide device with sensor, and linear motion guide device

Abstract

The invention provides a technology for improving the operability of setting a sensor module. A sensor module (1) is provided with a housing (10) in which a sensor (30) is enclosed, a socket (12a) is formed in the housing (10), and a sensor substrate (20) to which the sensor (30) and a pin module (40) are mounted is fixed to the housing (10), and the pin module (40) is provided with a contact pin (41) for outputting a signal of the sensor (30) inside the socket (12a).

Description

TECHNICAL FIELD

[0001] The present application relates to a sensor assembly, a direct drive guide device with a sensor, and a direct drive guide device. BACKGROUND

[0002] A sensor assembly is known that includes a sensor that converts a detected change in the environment into an electrical signal and outputs the same.

[0003] In Patent Document 1, a temperature sensor assembly is disclosed that includes a temperature sensor and a terminal that outputs a signal from the temperature sensor.

[0004] PRIOR ART DOCUMENTS

[0005] PATENT DOCUMENTS

[0006] Patent Document 1: Japanese Patent Application Publication No. 2021-089281 SUMMARY

[0007] PROBLEMS TO BE SOLVED BY THE INVENTION

[0008] However, the above-described temperature sensor assembly has a problem in that it is not easy to assemble. For example, in the above-described temperature sensor assembly, a pressing element that holds the temperature sensor and a sealing element that holds the plurality of housings are included. In the case of assembling the above-described temperature sensor assembly, since the assembly needs to be performed using such a pressing element and a sealing element, the assembly becomes difficult.

[0009] Here, in Figure 9 An example of a conventional sensor assembly is shown. Figure 9 is an example of an external view showing the structure of a conventional sensor assembly 100. Figure 9 The upper side of is a perspective view of the sensor assembly 100. Figure 9 The lower side of is a side view of the sensor assembly 100.

[0010] The sensor assembly 100 is a sensor assembly that outputs a signal output from a sensor 130 from a socket 140 via a wiring 170. The sensor assembly 100 houses the sensor 130 inside a housing 110. The sensor 130 is mounted to a sensor substrate 120, and the sensor substrate 120 is fixed to a lower housing 112. In addition, the socket 140 is fixed to the lower housing 112 via a gasket 150 using a nut 160.

[0011] In the case of assembling the sensor assembly 100, a worker first brazes the wiring 170 to the socket 140. The worker next passes the wiring 170 through an opening of the lower housing 112 and the nut 160, and fixes the socket 140 to the inside of the lower housing 112 using the nut 160. Note that, in the case ofFigure 9 In this case, the socket 140 is front-mounted, but even in the case of rear mounting, the work of fixing the socket 140 to the lower case 112 is performed.

[0012] Next, the worker fixes the sensor substrate 120 to the lower case 112. As an example of the method of fixing, a method of fixing using an adhesive can be given. Also, the worker brazes the wiring 170 to the sensor substrate 120 inside the lower case 112. Note that the order of the work of fixing the sensor substrate 120 to the lower case 112 and the work of brazing the wiring 170 to the sensor substrate 120 can be reversed. Finally, the worker completes the sensor assembly 100 having the sensor 130 inside the case 110 by mounting the upper case 111 to the upper side of the lower case 112.

[0013] In this way, in the case of assembling the conventional sensor assembly 100, the work of fixing the socket 140 to the lower case 112 using the nut 160 and the work of brazing the wiring 170 to the sensor substrate 120 are performed inside the lower case 112. Therefore, the conventional sensor assembly 100 has a problem that it is difficult to assemble.

[0014] In addition, in the conventional sensor assembly 100, it is necessary to fix the socket 140 to the lower case 112 via the gasket 150. Therefore, in the conventional sensor assembly 100, there is a problem that since the constituent elements are many and the structure is complicated, it is difficult to miniaturize, and the cost is consumed.

[0015] In addition, the conventional sensor assembly 100 is difficult to miniaturize, so that, for example, in the case of being provided to a direct drive guide device, the position where the sensor assembly 100 is provided is limited. In addition, there is a problem that the sensor assembly 100 restricts the movement of the movable portion of the direct drive guide device. In addition, in order to miniaturize, there is also a structure in which the socket 140 is not used in the sensor assembly 100, and a cable for outputting a signal of the sensor 130 is directly connected to the sensor substrate 120. However, in this structure, there is a problem that there is a risk of a wire breakage when provided to the direct drive guide device or when the wiring of the cable is performed.

[0016] One aspect of the present application is achieved in view of the above-described problems, and aims to provide a technology for improving the workability of the provision of a sensor assembly.

[0017] Means for solving the problem

[0018] To solve the above problems, one aspect of the present application relates to a sensor assembly including a housing that houses a sensor, a socket of a shape that can be connected to an external plug being formed in the housing, and a sensor substrate that is fixed to the housing and on which the sensor and a pin assembly are mounted, the pin assembly including a contact pin that outputs a signal of the sensor inside the socket.

[0019] In addition, to solve the above problems, one aspect of the present application relates to a direct drive guide device with a sensor including a housing that houses a sensor, and a guide rail that extends in a predetermined direction and is provided with a guide block that can slide in the predetermined direction, a recessed portion that is open at an end portion of the guide rail being formed, and at least a portion of the housing being fitted into the recessed portion.

[0020] In addition, to solve the above problems, one aspect of the present application relates to a direct drive guide device including a guide rail that extends in a predetermined direction and is provided with a guide block that can slide in the predetermined direction, a recessed portion that is open at an end portion of the guide rail being formed, and a housing that houses a sensor being fitted into the recessed portion.

[0021] Effects of the Invention

[0022] According to one aspect of the present application, the workability of installing a sensor assembly can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 FIG. 1 is an example of an external view showing the structure of a sensor assembly according to Embodiment 1 of the present application.

[0024] Figure 2 FIG. 2 is an example of an external view of a sensor assembly and an external plug according to Embodiment 1 of the present application.

[0025] Figure 3 FIG. 3 is a diagram that compares the size of an example of a sensor assembly according to Embodiment 1 of the present application with that of an example of a conventional sensor assembly.

[0026] Figure 4 FIG. 4 is an example of a perspective view of a case where a sensor assembly according to Embodiment 1 of the present application is installed at an end portion of a guide rail.

[0027] Figure 5 FIG. 5 is an example of an external view of an end portion of a guide rail in Embodiment 1 of the present application.

[0028] Figure 6 FIG. 6 is another example of an external view of a sensor assembly and an external plug according to Embodiment 1 of the present application.

[0029] Figure 7is an example of an appearance view of a connector lead-out type sensor assembly and a cable lead-out type sensor assembly to which Embodiment 1 of the present application relates.

[0030] Figure 8 is an example of an appearance view in a case where the sensor assembly to which Embodiment 1 of the present application relates is attached to a ball screw nut.

[0031] Figure 9 is an example of an appearance view showing the structure of a conventional sensor assembly. DETAILED DESCRIPTION

[0032] (Embodiment 1)

[0033] An embodiment of the present application will be described below in detail.

[0034] (Structure of Sensor Assembly 1)

[0035] Reference Signs Figure 1 The structure of the sensor assembly 1 to which the present embodiment relates will be described. Figure 1 is an example of an appearance view showing the structure of the sensor assembly 1 to which the present embodiment relates. Figure 1 The upper side of is a perspective view of the sensor assembly 1. Figure 1 The lower side of is a side view of the sensor assembly 1.

[0036] As shown in Figure 1 , the sensor assembly 1 is provided with a case 10 that houses a sensor 30. The case 10 is provided with an upper case 11 and a lower case 12. In addition, the sensor assembly 1 is provided with a sensor substrate 20, the sensor 30, and a pin assembly 40.

[0037] Hereinafter, as shown in Figure 1 , the sensor assembly 1 is arranged with the sensor substrate 20 as the lower side, the axis in the left-right direction when the opening of the socket 12a is viewed from the front face is set as the x-axis, the axis in the up-down direction is set as the y-axis, and the axis in the direction that is orthogonal to the x-axis and the y-axis is set as the z-axis.

[0038] The case 10 houses the sensor 30 by fitting the upper case 11 and the lower case 12. In addition, a socket 12a and a substrate mounting portion 12b that are shaped so as to be connectable to an external plug are formed in the lower case 12. In addition, the sensor substrate 20 that is mounted with the sensor 30 and the pin assembly 40 that is provided with a contact pin 41 that outputs a sensor signal inside the socket 12a is fixed to the substrate mounting portion 12b.

[0039] The sensor substrate 20 is a circuit substrate that is mounted with the sensor 30 and the pin assembly 40.

[0040] The sensor 30 outputs a signal indicating a detected change in the environment. The sensor 30 does not particularly detect what kind of change in the environment. As an example of the sensor 30, a vibration sensor that detects vibration can be given.

[0041] The pin assembly 40 is an assembly having the contact pin 41 that electrically connects with the socket of the external plug 2. The pin assembly 40 is installed on the sensor substrate 20 in such a manner that the contact pin 41 is positioned at a position (hereinafter, referred to as "predetermined position") that contacts with the socket of the external plug 2 when the sensor substrate 20 is fixed to the lower housing 12 and the external plug 2 is connected to the socket 12a.

[0042] The sensor assembly 1 outputs the signal output from the sensor 30 via the contact pin 41. As an example, the sensor assembly 1 outputs the signal output from the sensor 30 to an external device by connecting the external plug 2 connected with the external device to the socket 12a.

[0043] (Example 1 of the sensor assembly 1 and the external plug 2)

[0044] Reference Figure 2 The sensor assembly 1 and the external plug 2 will be described. Figure 2 is an example of an appearance view of the sensor assembly 1 and the external plug 2 according to the present embodiment. Figure 2 The upper side of is a perspective view observed from the opposite side of the opening of the socket 12a of the sensor assembly 1 in a state where the sensor assembly 1 and the external plug 2 are not connected. Figure 2 The center of is a perspective view observed from the front side of the opening of the socket 12a of the sensor assembly 1 in a state where the sensor assembly 1 and the external plug 2 are not connected. Figure 2 The lower side of is a perspective view observed from the opposite side of the opening of the socket 12a of the sensor assembly 1 in a state where the sensor assembly 1 and the external plug 2 are connected.

[0045] As shown in the upper side and the center of Figure 2 is formed in the lower housing 12 in a shape that can be connected with the external plug 2. In addition, as shown in the lower side of Figure 2 is fitted with the external plug 2 when the socket 12a is connected with the external plug 2. Also, the signal output from the sensor 30 is output to an external device connected with the other end of the cable 3 via the cable 3 connected with the external plug 2.

[0046] (Comparison of the size of the sensor assembly 1 with the conventional sensor assembly 100a)

[0047] Reference Figure 3 A comparison of the size of the sensor assembly 1 according to the present embodiment with the conventional sensor assembly 100a will be described. Figure 3is a diagram that briefly compares the structure of an example of the sensor assembly 1 according to the present embodiment and an example of the conventional sensor assembly 100a.

[0048] As shown in Figure 3 , in the conventional sensor assembly 100a, the socket 140a is fixed to the housing 110a by the nut 160a. In addition, a gasket 150a is disposed between the socket 140a and the housing 110a. A signal from a sensor (not illustrated in Figure 3 ) provided inside the housing 110a is output via a contact pin 141a inside the socket 140a.

[0049] In Figure 3 , as an example, a case where the thickness (H4) of the housing 10 of the sensor assembly 1, the thickness (H1 and L2) of the housing 110a of the sensor assembly 100a, and the thickness (H4) of the housing of the socket 140a are all the same (H1 = H4 = L2) is described. In addition, a case where the length in the longitudinal direction (direction along the y-axis) of the opening portion of the socket 12a of the sensor assembly 1 and the length in the longitudinal direction of the opening portion of the socket 140a of the sensor assembly 100a are also the same (H) is described. In addition, a case where the length in the length direction (direction along the z-axis) of the opening portion of the socket 12a of the sensor assembly 1 and the length in the length direction of the opening portion of the socket 140a of the sensor assembly 100a are also the same (L) is described. In addition, a case where the length in the length direction (direction along the z-axis) of the substrate mounting portion 12b of the sensor assembly 1 and the length in the length direction of the housing 110a of the sensor assembly 100a are also the same is described.

[0050] First, the length in the length direction of the conventional socket 140a and the socket 12a according to the present embodiment is compared. The length in the length direction of the conventional socket 140a is L100, which is the sum of the length L of the opening portion of the socket 140a, the thickness L1 of the gasket, the thickness L2 of the housing 110a, and the thickness L3 of the nut 160a.

[0051] On the other hand, the length in the length direction of the socket 12a according to the present embodiment is the length L of the opening portion of the socket 12a. That is, as shown in Figure 3 , the length in the length direction of the socket 12a according to the present embodiment is shorter than the length in the length direction of the conventional socket 140a by the amount (L1 + L2) of the length L1 of the gasket 150a plus the thickness L2 of the housing 110a.

[0052] In addition, as shown in Figure 3 , the length in the length direction of the sensor assembly 1 according to the present embodiment is shorter than the length in the length direction of the conventional sensor assembly 100a by the amount (L1 + L2) of the length L1 of the gasket 150a plus the thickness L2 of the housing 110a.

[0053] Next, the length in the longitudinal direction of the conventional socket 140a and the socket 12a according to the present embodiment is compared. The length in the longitudinal direction of the conventional socket 140a is the length {H + (H3 x 2) + (H4 x 2)} of the sum of the length H of the opening portion of the socket 140a, the length (H3 x 2) of the flange portion 140b of the socket 140a, and the thickness (H4 x 2) of the housing of the socket 140a.

[0054] On the other hand, the length in the longitudinal direction of the socket 12a according to the present embodiment is the length {H + (H4 x 2)} of the sum of the length H of the opening portion of the socket 12a and the thickness (H4 x 2) of the housing. That is, as shown in FIG. 7, the length in the longitudinal direction of the socket 12a according to the present embodiment is shorter than the length in the longitudinal direction of the conventional socket 140a by the length [{H + (H3 x 2) + (H4 x 2)} - {H + (H4 x 2)}] = (H3 x 2). Figure 3

[0055] Next, the length in the longitudinal direction of the conventional sensor assembly 100a and the sensor assembly 1 according to the present embodiment is compared. First, the length of the upper side of the socket is compared. The length of the upper side of the socket of the conventional socket 140a is the sum (H1 + H2 + H3 + H4) of the thickness H1 of the housing 110a, the length H2 from the upper end of the flange portion 140b to the housing 110a, the length H3 of the flange portion 140b, and the thickness H4 of the housing of the socket 140a.

[0056] On the other hand, the length of the upper side of the socket of the sensor assembly 1 according to the present embodiment is the thickness H4 of the housing 10. That is, as shown in FIG. 8, the length of the upper side of the socket in the longitudinal direction of the sensor assembly 1 according to the present embodiment is shorter than that of the conventional sensor assembly 100a by the length (H1 + H2 + H3 + H4) - H4 = H1 + H2 + H3 (H_D in FIG. 9). Figure 3 Figure 4

[0057] Likewise, the length in the longitudinal direction of the sensor assembly 1 according to the present embodiment is shorter than that of the conventional sensor assembly 100a by the length H_D. That is, the length in the longitudinal direction of the sensor assembly 1 according to the present embodiment is shorter than that of the conventional sensor assembly 100a by the length (H_D x 2).

[0058] In this way, the sensor assembly 1 can reduce the size in the length direction and the longitudinal direction compared to the conventional sensor assembly by forming the socket 12a in the lower housing 12.

[0059] (Assembly of Sensor Assembly 1)

[0060] ​​​In the case of assembling the sensor assembly 1, the operator fixes the sensor substrate 20 on which the sensor 30 and the pin assembly 40 are mounted to the lower housing 12 in such a manner that the contact pins 41 of the pin assembly 40 are disposed at a prescribed position inside the socket 12a. The method of fixing the sensor substrate 20 to the lower housing 12 is not particularly limited, and as an example, a method of fixing by an adhesive can be given. Finally, the operator fits the upper housing 11 to the lower housing 12.

[0061] (EFFECTS OF THE SENSOR ASSEMBLY 1)

[0062] Thus, the sensor assembly 1 does not require soldering inside the lower housing 12. In addition, the sensor assembly 1 does not require a member for fixing the socket 12a because the socket 12a is formed in the lower housing 12. Thus, the sensor assembly 1 is easy to assemble, and a sensor assembly of a simple structure can be achieved. In addition, in the sensor assembly 1, by mounting the pin assembly 40 to the sensor substrate 20 by the automatic machine in advance, the work of soldering by the operator can also be omitted. In addition, because the sensor assembly 1 is downsized compared to the conventional sensor assembly 100a, the workability of the installation of the sensor assembly 1 can be improved.

[0063] In addition, the substrate mounting portion 12b for fixing the sensor substrate 20 in the lower housing 12 and the portion in which the socket 12a is formed can also be integrally molded.

[0064] With this structure, in the sensor assembly 1, the work of integrating the substrate mounting portion 12b and the socket 12a is not required, and also, a member such as a gasket is not required. Thus, the sensor assembly 1 is easy to assemble, and a sensor assembly of a simple structure can be achieved.

[0065] (EXAMPLE 1 OF MOUNTING OF THE SENSOR ASSEMBLY 1)

[0066] REFERENCE Figure 4 An example of the mounting of the sensor assembly 1 will be described. Figure 4 is an example of a perspective view of the case in which the sensor assembly 1 related to the present embodiment is mounted to the end portion of the rail 4 of a linear guide device. That is, Figure 4 The linear guide device shown in

[0067] As shown in Figure 4 In addition, as shown in Figure 4The end portion of the guide rail 4 provided with the guide block 5 that is able to slide in a prescribed direction is provided with the sensor assembly 1. In addition, a cover 6 is disposed on the upper side in the y-axis direction of the sensor assembly 1.

[0068] In this way, by providing the sensor assembly 1 at the end portion of the guide rail 4, wiring to the cable chain for concentrating the cable wiring can be reduced compared to a case in which the sensor assembly 1 is provided at a portion other than the end portion of the guide block 5. In addition, by reducing the wiring to the cable chain, the length of the cable 3 can be shortened. In addition, since the wiring sites to the movable portion such as the guide block 5 can be reduced, the risk of disconnection of the cable 3 can also be reduced.

[0069] Example 1 of the method of mounting the sensor assembly 1

[0070] In Figure 5 , the sensor assembly 1 is mounted to the end portion of the guide rail 4 by fitting into the recess 4a formed at the end portion of the guide rail 4. Referring to Figure 5 The method of mounting the sensor assembly 1 to the recess 4a will be described. Figure 5 is an example of an appearance view of the end portion of the guide rail 4 of the present embodiment. Figure 5 The left side of Figure 6 is a perspective view of the end portion of the guide rail 4 after the sensor assembly 1 is mounted. Figure 5 The right side of

[0071] As shown in the left side of Figure 5 , a recess 4a that is open on the end portion side is formed at the end portion of the guide rail 4. In Figure 5 , the recess 4a is formed in a shape that the housing 10 of the sensor assembly 1 is fitted as a whole, but the recess 4a can be formed in a shape that at least a portion of the housing 10 of the sensor assembly 1 is fitted. In other words, the recess 4a can be formed in a manner that the sensor assembly 1 is fixed to the end portion of the guide rail 4 when the housing 10 of the sensor assembly 1 is fitted. For example, the recess 4a can be formed so that half of the length of the housing 10 in the direction along the z-axis direction is fitted into the recess 4a.

[0072] Next, as shown in the center of Figure 5 , the housing 10 is fitted into the recess 4a. Finally, as shown in Figure 4The cover 6 is disposed on the right side of the sensor assembly 1 as shown in FIG. 1, and on the upper side in the y-axis direction of the sensor assembly 1. Note that the cover 6 can be disposed or not disposed. By disposing the cover 6, the recessed portion of the surface of the guide rail 4 can be eliminated. Further, by eliminating the recessed portion of the surface of the guide rail 4, the accumulation of foreign matter in the recessed portion (mounting screw or the like) of the upper surface of the upper housing 11 of the sensor assembly 1 can be prevented, and the foreign matter can be prevented from being caught in the inside of the guide block 5 when the guide block 5 slides.

[0073] Thus, by fitting at least a portion of the housing 10 of the sensor assembly 1 in the recessed portion 4a formed at the end portion of the guide rail 4, the sensor assembly 1 can be disposed at a position that does not interfere with the operation of the guide block 5. Further, in the case where the sensor 30 of the sensor assembly 1 is a vibration sensor, the vibration of the guide rail 4 can be appropriately detected.

[0074] Further, by forming the recessed portion 4a in which at least a portion of the housing 10 of the sensor assembly 1 is fitted, at the end portion of the guide rail 4 in a manner that the end portion side is open, the sensor assembly 1 can be installed on the guide rail 4 after the guide rail 4 is installed. Further, in the case where the sensor assembly 1 malfunctions, the sensor assembly 1 can be easily replaced. Further, in the state where the guide rail 4 is provided with the guide block 5, the sensor assembly 1 can be disposed and replaced. That is, Figure 4 The linear guide device as shown in FIGS. 1 to 3 can improve the workability of the disposition of the sensor assembly 1.

[0075] Further, the sensor assembly 1 can be manufactured independently of the guide rail 4. Therefore, in the case where the sensor assembly and the guide rail are integrated as in the conventional sensor assembly 100a, since there are various shapes of the guide rail and the length of the guide rail, and the like, it is difficult to perform mass production and inventory management, but the sensor assembly 1 can be easily mass-produced and managed in inventory.

[0076] Further, as described above, the sensor assembly 1 is miniaturized compared to the conventional sensor assembly 100a. Therefore, as shown in FIG. 4, the sensor assembly 1 can be disposed in a position that does not interfere with the operation of the guide block 5. Figure 5 Further, as shown in FIG. 4, the sensor assembly 1 can be disposed in a position that does not interfere with the operation of the guide block 5. Figure 6 Further, as shown in FIG. 4, the sensor assembly 1 can be disposed in a position that does not interfere with the operation of the guide block 5.

[0077] In other words, in a case where the sensor assembly 1 is provided to the rail 4, the sensor assembly 1 is provided inside the rail 4 in any cross section of a surface parallel to the xy plane of the rail 4. That is, in a case where the sensor assembly 1 is provided to the rail 4, the length in the x axis direction of the sensor assembly 1 is shorter than the length in the x axis direction of the rail 4 in any cross section of a surface parallel to the xy plane of the rail 4. Also, in a case where the sensor assembly 1 is provided to the rail 4, the length in the y axis direction of the sensor assembly 1 is shorter than the length in the y axis direction of the rail 4 in any cross section of a surface parallel to the xy plane of the rail 4.

[0078] Thus, since the sensor assembly 1 is provided within the range of the cross section of the rail 4, the movable region of the guide block 5 is not limited.

[0079] (Example 2 of the sensor assembly 1 and the external plug 2)

[0080] Referring to Figure 6 The sensor assembly 1 and the external plug 2 provided to the end portion of the rail 4 are described. Figure 6 is another example of the appearance view of the sensor assembly 1 and the external plug 2 according to the present embodiment.

[0081] Figure 6 The external plug 2 shown is connected to the external device 7 via the cable 3. By connecting the external plug 2 to the sensor assembly 1, the external device 7 can acquire the signal output from the sensor 30. As an example of the external device 7, a signal meter having a calculation function can be given, but is not limited thereto.

[0082] As shown in Figure 6 , the socket 12a of the sensor assembly 1 can also be formed in the housing 10 in a manner that the external plug 2 is connected at the end portion of the rail 4 in the same direction as the direction in which the guide block 5 slides on the rail 4 (the direction along the z axis). By this structure, the case where the external plug 2 restricts the movement of the guide block 5 can be properly prevented.

[0083] In addition, as shown in Figure 7 , the sensor assembly 1 does not need to use a relay connector between the sensor assembly 1 and the external device 7. Thus, in the sensor assembly 1, since a portion to fix the relay connector is not needed, the cable can be fixed at an arbitrary portion.

[0084] (Comparison with the sensor assembly 100b integrated with the external plug 2 and the cable 3)

[0085] Referring to Figure 7Explain the case where the sensor assembly 100b (hereinafter referred to as "cable-exit type sensor assembly 100b") that is integrated with the external plug 2 and the cable 3 is provided at the end of the guide rail 4, in comparison with the case where the sensor assembly 1 (hereinafter referred to as "connector-exit type sensor assembly 1") according to the present embodiment is provided at the end of the guide rail 4. Figure 7 is an example of an appearance view of the connector-exit type sensor assembly 1 and the cable-exit type sensor assembly 100b according to the present embodiment. Figure 7 The upper side of is an example of an appearance view in the case where the cable-exit type sensor assembly 100b is provided at the end of the guide rail 4. Figure 7 The lower side of is an example of an appearance view in the case where the connector-exit type sensor assembly 1 is provided at the end of the guide rail 4. Here, the cable-exit type sensor assembly 100b is a structure in which the sensor assembly 100b, the external plug 2, and the cable 3 are integrated, and the sensor assembly 100b, the external plug 2, and the cable 3 cannot be separated.

[0086] As shown in the upper side of Figure 7 , when the cable-exit type sensor assembly 100b is provided at the end of the guide rail 4, there is a risk that the cable 3 will be broken in the case where the guide rail 4 is provided. On the other hand, as shown in the lower side of Figure 8 , since the connector-exit type sensor assembly 1 is separated from the external plug 2, it is possible to prevent the cable 3 from being broken in the case where the guide rail 4 is provided.

[0087] (Example 2 of the installation of the sensor assembly 1)

[0088] Referring to Figure 8 , another example of the installation of the sensor assembly 1 will be described. Figure 8 is an example of an appearance view in the case where the sensor assembly 1 according to the present embodiment is installed in the ball screw nut 9. Figure 8 The upper side of is a perspective view of a state in which the sensor assembly 1 is not connected to the external plug 2. Figure 8 The center of is a side view of a state in which the sensor assembly 1 is not connected to the external plug 2. Figure 8 The lower side of is a perspective view of a state in which the sensor assembly 1 is connected to the external plug 2.

[0089] Figure 8 The ball screw nut 9 shown in Figure 8 is a nut that is screwed to the screw shaft 8 and moves in the axial direction (in the direction along the y-axis) of the screw shaft 8 as the screw shaft 8 rotates. As shown in , the sensor assembly 1 can also be provided in the ball screw nut 9.

[0090] Thus, by providing the sensor assembly 1 to the ball screw nut 9, the sensor assembly 1 can appropriately detect the vibration of the ball screw nut 9 in a case where the sensor 30 is a vibration sensor. In addition, since the sensor assembly 1 is separated from the external plug 2, the sensor assembly 1 can be easily replaced alone. That is, for the sensor assembly 1, the workability of the provision of the sensor assembly 1 can be improved.

[0091] In addition, as shown in FIG. 1, the sensor assembly 1 can be provided to a surface of the ball screw nut 9 as a surface (xz plane) perpendicular to the axial direction of the screw shaft 8. ​

[0092] As described above, since the sensor assembly 1 is miniaturized compared to the past, with this structure, the size of the sensor assembly 1 in the axial direction of the screw shaft 8 is small, and the interference with respect to the operation of the ball screw nut 9 can be suppressed to the minimum.

[0093] The present application is not limited to each of the above-described embodiments, and various modifications can be made within the scope of the technical means shown in the technical solution, and embodiments obtained by appropriately combining the technical means respectively disclosed in different embodiments are also included in the technical scope of the present application.

[0094] Explanation of Reference Signs

[0095] 1 Sensor assembly

[0096] 2 External plug

[0097] 3 Cable

[0098] 4 Rail

[0099] 5 Guide block

[0100] 10 Housing

[0101] 11 Upper housing

[0102] 12 Lower housing

[0103] 12a Socket

[0104] 12b Base plate mounting portion

[0105] 20 Sensor substrate

[0106] 30 Sensor

[0107] 40 Pin assembly

[0108] 41 Contact pin​

Claims

1. A sensor assembly, characterized in that: The sensor assembly includes a housing containing a sensor. The housing is provided with a socket that is connectable to an external plug and a sensor substrate is fixed thereto. The sensor substrate is mounted with the sensor and pin assembly, The pin assembly includes contact pins inside the socket for outputting the sensor signal.

2. The sensor assembly according to claim 1, wherein At least a portion of the housing is fitted into a recess formed at an end of a guide rail and opened at the end. The guide rail extends in a predetermined direction and is provided with a guide block slidable in the predetermined direction.

3. The sensor assembly according to claim 2, wherein: When at least a portion of the housing is fitted into the recess, a cross-sectional size of the sensor assembly on a plane perpendicular to the sliding direction of the guide block is smaller than a cross-sectional size of the guide rail on a plane perpendicular to the sliding direction.

4. The sensor assembly according to claim 1, wherein: The sensor assembly is provided on a ball screw nut, which is threadedly engaged with a screw shaft and moves in the axial direction of the screw shaft as the screw shaft rotates.

5. The sensor assembly according to claim 4, wherein: The sensor assembly is provided on a surface of the ball screw nut which is a surface perpendicular to the axial direction.

6. The sensor assembly according to any one of claims 1 to 5, characterized in that A portion of the housing that fixes the sensor substrate and a portion that forms the socket are integrally formed.

7. A linear guide device with a sensor, characterized in that: The sensor-equipped linear guide device includes: a housing containing the sensor; and A guide rail extending in a predetermined direction and provided with a guide block capable of sliding in the predetermined direction, A recess with an open end is formed at the end of the guide rail. At least a portion of the housing is fitted into the recess.

8. A linear guide device, characterized in that: The linear guide device includes a guide rail extending in a predetermined direction and provided with a guide block slidable in the predetermined direction. A recess with an open end side is formed at an end portion of the guide rail, and at least a portion of a housing that houses the sensor is fitted into the recess.

Images